Novel Absorber Material Design Based on Thiazole Derivatives Using DFT/TD-DFT Calculation Methods for High-Performance Dye Sensitized Solar Cell ...
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
Research Article 16 Indones. J. Chem. Stud. 2022, 1(1), 16–23 Available online at journal.solusiriset.com e-ISSN: 2830-7658; p-ISSN: 2830-778X Novel Absorber Material Design Based on Thiazole Derivatives Using DFT/TD-DFT Calculation Methods for High-Performance Dye Sensitized Solar Cell Naufan Nurrosyid1,2*, Mirad Fahri1, Yusuf Bramastya Apriliyanto1, Rahmat Basuki1 1 Department of Chemistry, Faculty of Military Mathematics and Natural Sciences, Republic of Indonesia Defense University, Kawasan IPSC, Sentul, Bogor 16810, Indonesia 2 Department of Materials Science & Engineering, Monash University, 20 Research Way, Clayton VIC 3800, Australia Received: 15 May 2022; Revised: 9 Jun 2022; Accepted: 10 Jun 2022; Available online: 15 Jun 2022; Published regularly: 30 Jun 2022 Abstract— Thiazole derivative molecules with a low energy gap have been successfully designed using the DFT/TD-DFT calculation methods. The calculations were simulated by adding varied numbers of thiophenes (1, 2, 3, and 10) and electron donating molecules of –H, -NH2, -OCH3, and –COOH in the ethanol solvent. The best thiazole derivative was the molecule constructed using a long-conjugated bridge of 10-thiophenes, the carboxyl anchoring site, and an amine addition as the electron donating molecule with an energy gap of 1.66 eV and a strong UV-Vis absorption in the red light region (673.20 nm). These designed molecules are beneficial to be applied in the equator area such as Indonesia. Further, the profound effects of the thiophene bridge in terms of the structural and energy gaps, and the variation of electron-donating molecules affected the photonic properties have been demonstrated in this paper. Keywords— Thiazole derivatives design; Photonic material; DFT/TD-DFT; Dye sensitized solar cell. are employed, or less than 0.08% of the total potential 1. INTRODUCTION used [5]. The low realization proportions are due to Energy security is one of the main factors unclear regulations, unavailable markets, and weak determining the strength of a country because of its research on product development [6]. Therefore, vital function [1]. The International Energy Agency (IEA) studies focussing on photovoltaic technology and its defines energy security as the availability of an device as a solution to the latest problem are abundant energy source in a nation at an affordable significantly substansial in Indonesia. price with a benign supply for 90 days of oil equivalent The photovoltaic device is an instrument that imports [2]. Indonesia, a country with immense converts sunlight into electrical energy utilizing renewable energy potential, has to rely on the utility of engineered semiconductor materials, which have been fossil energy, with the usage rate reaching ~90% [3]. developed since 1954 using silicon-based solar panels Furthermore, some crucial predictions from the 2019 [7]. Although it is a senescent technology, Indonesia Energy Outlook published by the Indonesia National does not yet have an industrial plant that produces Energy Council stated that the national oil production silicon panels due to its complexity and high is estimated to be low at 53.8 million barrels in 2050, production costs. One alternative in photovoltaic with only 71 years remaining for the coal stockpile [4]. technology that is widely studied is dye sensitized Therefore, the transition to the employment of solar cells (DSSC). This technology has been at the renewable energy is a straightforward strategy for the center of attention of researchers for the last 30 years country. because of its potential as an effective, economical, Although the potential of renewable energy in flexible, highly reproducible, and scalable power Indonesia is abundant, the energy mix target of 23% in conversion device for industry [8]. Since O'Regan and 2025 merely can be achieved by 10% at this time. Data Gratzel first report in 1991, the exploitation of dyes has from the Institute for Essential Service Reform (IESR) been very high to replace silicon-based solar cells in 2019 shows the solar power potential in Indonesia that act as light harvesters to generate electricity. To isup to 208 gigawatts. However, only 159 megawatts date, the power conversion efficiency (PCE) of DSSC *Corresponding author. Email address: naufannurrosyid@gmail.com DOI: 10.55749/ijcs.v1i1.5
17 Indones. J. Chem. Stud., 2022, 1(1), 16–23 has reached over 14% due to various optimizations component of the gradient was less than the such as their film formation, charge transport, optimization tolerance and the root mean square electrolyte system, and dyes enhancement, most gradient was less than a third of the optimization importantly [9]. tolerance. The initial geometry optimization was Curcumin, phenylalanine, dithienopyrrole, and performed under an ethanol solvent environment (ε = thiazole are used actively as sensitizers in DSSC 24.55) with no symmetry restriction to produce an devices [10]. Numerous studies using thiazoles have optimal ground state structure of the designed obtained promising results due to their intrinsic molecules. Moreover, all of the obtained geometries properties, such as intense intramolecular charge were confirmed to be the minima value on the transfer, strong absorption of visible light, and broad potential energy surface (PES) by performing molecular derivatives [11]. In addition, the selection of vibrational frequencies calculations. thiazoles is determined strongly by the nature of the In the next step, the optoelectronic properties of extendable conjugated bridge based on the stable the designed molecules were simulated and precisely structure of the donor-conjugated bridge-acceptor (D- calculated through the TD-DFT method using a π-A). Therefore, further studies, from molecular to correlation-consistent basis set up to the 1d electron mechanical aspects, are always required to optimize orbital (cc-pVDZ) as implemented in the Gaussian 09 thiazoles in DSSC. Fortunately, the computational software. It is globally accepted that the TD-DFT approach continues to be an essential method in approximation, despite its shortcomings, is still predicting the potential of particular sensitizers for recognized as a decent compromise to evaluate DSSC concerning cost-effective research. Both vertical excitation energies and it’s results are density functional theory (DFT) and time-dependent comparable to the experimental optical spectra. density functional theory (TD-DFT) have been adopted Thus, based on the mentioned methods, we could optimally as standard investigative tools on the possibly obtain some valuable data regarding the optoelectronic properties of molecules in dyes optical and electronical properties of the excited involving the ground and excited states, respectively molecules such as excitation energy or frontier [12]–[14]. orbital’s energy gap, excitation symmetry, and In this work, we employed the DFT and TD-DFT percentage of excitation, electron density in both of methods and the results were analyzed to establish a highest occupied (HOMO) and lowest unoccupied reproducible roadmap in designing some novel molecular orbitals (LUMO). Finally, we demonstrated molecules based on thiazole derivatives focusing on the possible UV-vis absorption spectra and the the sum of the effects of the thiophene acting as resulting molecular orbitals using GausSum and expandable conjugated bridge. Furthermore, GabEdit, respectively. particular added electron donating molecules were 2.2. Calculation Roadmap Details also simulated to optimize their optoelectronic properties. This type of computational study is crucial, The ultimate purpose of this research was to especially in this Covid-19 pandemic situation, because demonstrate a detailed workflow when designing a computational approach is an ultimate solution to certain molecule as a sensitizer in DSSC. To obtain a obtaining high quality and cost-effective research. precise result, the first step was to create a z-matrix from the thiazole as the main molecule using a simple 2. COMPUTATIONAL DETAILS molecular software such as Avogadro followed by 2.1. Calculations Methods optimization of its ground state structure via DFT calculation using Gaussian 09. In this study, both the geometric and optoelectronic Further, various of thiophene functional groups as properties of the designed molecule as a novel an expandable conjugated bridge was added and sensitizer in DSSC were deeply investigated and optimized using the previously mentioned method. calculated using the standard Gaussian 09 package. After the optimized ground state geometries of Firstly, a 3D molecular structure was generated via thiazole derivatives with various thiophens bridge Avogadro software. The Merck molecular force field were obtained, further calculations employing the TD- (MMFF94), as a precise molecular mechanics tool that DFT method were performed to reveal the freely available in the software, was adopted to optoelectronic properties in their excited states. minimize the conformational energies [15]. To enhance the previous models, several electron A full geometry optimization was performed further donating groups were attached to the latest thiazole using a DFT calculation based on Becke’s three with the optimized thiophene numbers and their parameters gradient-corrected exchange potential excited states were calculated using the identical and the Lee-Yang-Parr gradient correlation potential method as before. Finally, combining these two (B3LYP) hybrid functional using a common basis set of parameters will reveal the best performed thiazole 6-31G(d). The parameters and basis set were found to derivative as a sensitizer in DSSC. be quite stable and already established in the aforementioned package [16]. The convergence of a geometry search was reached when the largest Nurrosyid et al.
18 Indones. J. Chem. Stud., 2022, 1(1), 16–23 3. RESULT AND DISCUSSION yield amine 4-(4-metoxy-2-(thiophen-2yl)thiazole-5- yl)aniline as presented in scheme 3. In this study, we designed molecules based on the Finally, the reference molecule for further well-known chemical reaction of thiophene-2- modification was obtained by reacting the last yielded carbothioamide with ethyl 2-bromo-2-(4- molecule with hydrochloric acid at -50 °C to form nitrophenyl)acetate via Hantzsch cyclization as diazonium compound, and later be deaminated using demonstrated in scheme 1, in Fig. 1. Next, the obtained hypophosphorous acid as shown in the latest scheme material, which was 4-hydroxy-1,3-thiazole then (4). This final product was labelled as a reference alkylated with K2CO3 and methyl iodide succeeding a thiazole in this report for simplification. Based on its Williamson-type etherification to get 4-methoxy-5-(4- common synthesis route and high resonance nitrophenyl)-2-(thiophen-2-yl)thiazole as witnessed in opportunity provided by conjugated bonding, further scheme 2. Furthermore, the reduction reaction of the analysis developed with a reproducible computational nitro group in the previous results was conducted by calculation were presented in this report. hydrazine hydrate solution and a Nickel substrate to Fig. 1. Schematic synthesize route of reference thiazole [17] The first modification on this thiazole main molecule molecules can stabilize their structure since they will started by adding thiophene as a π-conjugated bridge. act as conjugated bridge [18]. A total SCF energy of - It is already reported in several studies that the longer 1.77 × 10-7 kJ mol-1 was obtained with the 10 thiophene the bridge the lower the molecular energy gap, while a single thiophene had an energy of -0.47 × 10-7 producing a red-shifted electronic absorption kJ mol-1. Although ten thiophenes can decrease the spectrum [18]. Even though decreasing the energy gap total SCF energy more than three times that of the can improve the light-harvesting ability of the reference structure, it should be noted that creating a photoactive materials, it should be noted that the long π-bridge is experimentally challenging. HOMO position needs to be matched with the TiO 2 Table 1. Total SCF energy with thiophens variation semiconductor, especially in the D-π-A structure. Therefore, a careful analysis involving structure and Thiophene Amount* Total SCF Energy (kJ mol-1) excitation states of the active material is extremely 1 -0.465 × 10-7 2 -0.610 × 10-7 imperative. 3 -0.755 × 10-7 In term of structural study, we calculated different 10 -1.769 × 10-7 number of thiophene to modify the π-bridge length. *The structure of four designed molecules with the different of The total energy (kJ mol-1) of 1, 2, 3, and 10 number of thiophens amount is depicted in the Supporting Information, Fig. S1. thiophenes were calculated using the self consistent field (SCF) method in the Hartree-Fock (HF) Regarding the energetical results by the DFT approximation in conjugation with an augmented investigation to obtain the favourable structure, the valence triple-zeta basis set, 6-311G(d,p), to ensure a excited state geometries and their optical properties correct description of the H-bond system. The stable of designed photoactive molecules were calculated B3LYP hybrid functional was used as a reliable energy using the TD-DFT method with the cc-pVDZ basis set calculation in terms of structural optimization [19]. As in the ethanol phase. From this higher-level theory, shown in the Table 1, the more thiophene added in the energy gaps information is obtained which is a molecule, the lower the total energy. This result is essential for designing any molecule to be a sensitizer because the thiophene in the designed photoactive in DSSC. The Gaussian software also facilitates us to Nurrosyid et al.
19 Indones. J. Chem. Stud., 2022, 1(1), 16–23 obtain excitation symmetry and their composition All designed molecules are based on organic which are important for excitation analysis during the compounds with π-conjugated bridge, thus, the photo incident. excitation energy shown in the calculation is mainly an energy different (HOMO-LUMO energy gap) between π Table 2. Vertical excitation profile of excited thiazole molecules with thiophens variation to π* orbitals. Table 2 shows that the variation of π- bridge length provide meaningful results. The longer Vertical Excitation Profile the bridge, the lower the energy gap. The ten Thiophene Energy thiophens were recorded to have 1.86 eV energy gap, Composition Amount Gap Symmetry while the reference had 2.58 eV. These results are (%) (eV) quite promising in DSSC, since the decreasing energy 1 2.58 HOMO LUMO 100 can simply be achieved by adding a conjugated π 2 2.35 HOMO LUMO 100 3 2.23 HOMO LUMO 99 bridge. With these early data, we confidently HOMO-1 LUMO+1 1 recommend to design photoactive planar molecule 10 1.86 HOMO LUMO 91 with higher conjugated value to achieve 1.4 eV as the HOMO-1 LUMO+1 6 most ideal energy gap for photovoltaic devices [20]. HOMO-2 LUMO+2 3 1 Thiophene 2 Thiophens 3 Thiophens LUMO HOMO 10 Thiophens LUMO HOMO Fig. 2. The molecular orbital density in HOMO and LUMO states of thiazole molecules with thiophens variation. The phase of wave functions is shown as red and blue colors of the represented molecular orbitals The excitation symmetry and its composition deexcitation phenomena, which later reducing the final presented in Table 2 showed that one and two current in the devices. thiophenes provided a hundred percent excitation Although there is a branching in the excitation from the HOMO to LUMO symmetry, while the three symmetry of the thiazole with ten thiophens, the thiophenes with 2.23 eV had branched excitations. designed molecules still have a tendency to be a great Furthermore, ten thiophens showed a triple excitation photoactive material since the majority of excitations symmetry with the majority of HOMO to LUMO is conducted in the HOMO to LUMO symmetry, with excitation (91%), HOMO-1 to LUMO+1 of 6%, and only 3% more than 90% composition. The localization orbital from HOMO-2 to LUMO+2 symmetry. The excitation states play a crucial role in this phenomenon [21]. symmetry branching will further increase due to the Despite majority of orbitals seems to be overlapped as overlapping orbitals between the ground and excited shown in Fig. 2, the density in LUMO is relatively high states [21]. This typical condition should be tackled in its methoxy group. In contrast, the orbital density down in the designing decent sensitizer in DSSC since also increases in the aromatic rings for the HOMO the cumulative overlapping orbitals lead to state. Based on this simulation, a clear electron Nurrosyid et al.
20 Indones. J. Chem. Stud., 2022, 1(1), 16–23 separation between its ground and excited states will Furthermore, the electron donating groups were be beneficial for DSSC. varied as an additional step to show the effect of each Moreover, from the absorbance prediction by TD- molecules attracted in one thiophene based structure. DFT, it is clearly stated that all designed molecules To make the effect stronger, the anchoring site was have the potential to be used as dyes in DSSC due to modified using a thiophene as the reference. One their absorbance in the range of 480.33 to 667.54 nm. thiophene is chosen due to the calculation complexity The oscillator frequency (foscillator) also witnessed a that might contribute to the accuracy. Three molecules great increase as the rise of the number of thiophens, were employed at the terminal benzene, -NH2, -OCH3, because it actively transfers excited electrons after and -COOH to demonstrate a uniform attraction on the the photo incident. Thus, it is imperative to design whole sensitizer molecules. Similar to the previous several photoactive molecules with the longest simulation, a higher amount of electrons results in a possible of conjugated bridge as the trade-off more negative total SCF energy, leading to a more between the stability, cost-efficient procedure, and the stable structure. Hence, -COOH witnessed the lowest photoactive performance. energy, -5.28 × 10-8 kJ mol-1 compared to the control (- Absorbance study is one of the fundamental 4.79 × 10-8 kJ mol-1). The detail results are available in properties to be directly observed when designing Fig. S2 and Table S1 of the Supporting Information. photoactive materials. The peaks in the absorption Interestingly, although all electron donating spectra, or usually showed as a spectrum edge, molecules witnessed a 100% excitation profile from provide important information about the energy gap HOMO to LUMO, the energy variations were clearly (Eg), which is easily calculated from Eg = hν. A lower observed. Based on the TD-DFT calculation for each gap will induce more photons to be absorbed by the excited molecule, -NH2 shows a dramatical reduction materials, thus more electricity will be produced in the in the energy, 1.96 eV compared to the -COOH, 2.31 eV, device. A higher energy gap means a highly which is quite high and is still similar with the control transmittance material, leading less incident light to (-H), 2.59 eV. It is clearly shown that all of electron potentially be converted into electricity [22]. It has donating molecules provide a good agreement for the been calculated from the black body radiation and the HOMO and LUMO states. Shockley-Queisser limit that the ideal gap of To clearly investigate the effect of electron donating semiconductor materials to absorb the maximum molecules in thiazole derivatives, the UV-Vis number of photons from solar radiation was 1.4 eV [20]. absorption was evaluated using TD-DFT calculations This calculation becomes the foundation to design any and revealed a huge redshift in the -NH2 sample. The novel materials in a single photovoltaic device to absorbance peak dramatically shifts from 479.11 nm to obtain an energy gap as close as possible to 1.4 eV. 632.57 nm, consequently reducing the band energy gap The TD-DFT calculation has become a robust from 2.58 to 1.96 eV, as shown in Table 4. These approach to simulate UV-Vis absorption spectra with a results indicate that the addition of –NH2 in the precise maximum absorption value. Table 3 reveals a sensitizer, especially in the term can provide a benefit strong effect of the thiophene bridges in designed due to effective electron donating effect to the whole photoactive materials in both of maximum wavelength system. However, experimental should be carefully (λMAX) and foscillator. A strong redshift spectrum was designed to attach the amine site into the benzene observed when the amount of thiophene increase, side which is quite tricky. from 480.33 to 667.54 nm by ten of thiophene additions. Table 4. Absorption profile of thiazole with a thiophen and The higher number of excited electrons in the different electron donating molecule conjugated chain causes massive increase in the oscillator frequency, whereas the redshift phenomena Electron λMAX (nm) foscillator (Hz) Eg (eV) occurs due to the weaker anchoring site effect in the Donating longer bridge. These result indicate that π-junction -H 479.11 0.90 2.58 -NH2 632.57 1.05 1.96 could effectively reduce the gap up to 71.7%, from 2.58 -OCH3 584.49 1.05 2.12 to 1.85 eV, which is closer to the ideal energy gap of -COOH 536.33 1.23 2.31 photovoltaics device. It should be noted that a normal carboxyl is performing the anchoring effect inside the Finally, by optimizing the thiophene bridges by its molecule. number and electron donating molecule, the results were combined to deeply investigate the best Table 3. Absorption profile of thiazole molecules with thiophens variation performed molecule, a thiazole with a 10-thiophenes bridge and an amine at the edge. Two types of Thiophens molecules were simulated with the reference model λMAX (nm) foscillator (Hz) Eg (eV) Amount and highly ordered trans structure. Fig. 3 depicts the 1 480.33 1.12 2.58 mentioned structure, with a slightly different 2 525.62 1.42 2.36 stabilization energy. A trans-thiazole recorded -1.797 × 3 556.25 1.99 2.23 10-7 kJ mol-1 while the reference showed a higher value 10 667.54 4.24 1.85 of -1.799 × 10-7 kJ mol-1. This ultra-small different Nurrosyid et al.
21 Indones. J. Chem. Stud., 2022, 1(1), 16–23 indicates a stable structure to be obtained in the high number of electron repulsion inside the system synthesis without any notable risk to increase can also leads to the reference structure instead of a complexity to get the highly ordered structure. The trans-thiazole structure. (a) (b) Fig. 3. (a) Reference and (b) the best performed thiazole derivative Remarkable results showed by the excitation profile amine group as an electron donating group. Therefore, investigation through the best performed structure this type of doping is highly recommended for compared to the 10-thiophenes based molecule. designing a low energy gap absorber material. The Interestingly, a 1.66 eV of bandgap energy gap was excitation mapping between the ground and excited recorded with the 79% of HOMO LUMO excitation states of the best performed thiazole molecule are symmetric compared to 1.85 eV of the later structure. presented in Fig. 4, with the HOMO-1 LUMO and This 11.37% decrement is a significant result since it HOMO LUMO+1 excitation symmetric contributing to will lead to the higher number of photons absorbed by the 12% and 7% of the total composition, respectively. thiazole, and it was obtained by simply adding an LUMO+1 LUMO HOMO HOMO-1 Fig. 4. The HOMO-1, HOMO, LUMO, and LUMO+1 orbital density states of the best performed thiazole derivative model In addition, the simulated UV-Vis spectrum reported oscillator frequency of 2.29 Hz should be noted as the in Fig. 5 clearly presents a strong absorbance around intrinsic advantage to manage the photon incident 625 and 720 nm, that is a reddish sunlight. This result is through the photoactive material. Thus, the designed extremely important because the majority sunlight in molecule will be beneficial to be prepared as a high- equatorial is in the red region (above 620 nm). performance absorber material in DSSC applied in Moreover, the strongest peak at 673.20 nm with an Indonesia. Nurrosyid et al.
22 Indones. J. Chem. Stud., 2022, 1(1), 16–23 CONFLICT OF INTEREST We declare that there is no conflict of interest among authors. AUTHOR CONTRIBUTIONS NN conducted the experiment and DFT/TD-DFT calculations; NN, YBA, MF, & RB wrote and revised the manuscript. All authors agreed to the final version of this manuscript. REFERENCES [1] Gasser, P. 2020. A review on energy security indices to compare country performances. Energy Policy. 139(111339). 1-17 doi: 10.1016/j.enpol.2020.111339. [2] Ali, F., Khan, K.A., & Jahan, S. 2020. Evaluating energy security performance in Pakistan and India through aggregated energy security performance indicators (AESPI). Eur. Online J. Nat. Soc. Sci. 9(2). 425–442. Fig. 5. Simulated UV-Vis absorption spectrum for the best [3] Supriadi, E., Basuki, R., Prajitno, D.H., & Mahfud, M. 2021. performed of designed thiazole Produksi Biofuel Berbantuan Ultrasonik dari Minyak Kelapa Terkatalisis Ca/γ-Al2O3 dan K/γ-Al2O3. Walisongo J. Chem. 4(1). 4. CONCLUSION 45–56. doi: 10.21580/wjc.v4i1.7861. [4] Morris, N., Miharjana, D., Gubbi, S., Halim, A., Prabowo, A., To conclude, we had successfully designed a novel Napitupulu, D., & others. 2015. Sustainable Infrastructure photoactive material with a low energy gap of 1.66 eV Assistance Program: Technical Assistance for Energy RPJMN and strong UV-Vis absorption in the red light region 2015-2019: Energy Sector White Paper, Asian Development Bank. (673.20 nm). The results were beneficial to be applied in [5] Silalahi, D.F., Blakers, A., Stocks, M., Lu, B., Cheng, C., & Hayes, L. 2021. Indonesia’s Vast Solar Energy Potential. Energies. 14(17). an equatorial area such as Indonesia. The best 5424. doi: 10.3390/en14175424. performed thiazole derivative molecule was [6] Gunawan, F.E. et al. 2022. Design and energy assessment of a constructed using a long-conjugated bridge of 10- new hybrid solar drying dome-Enabling Low-Cost, Independent thiophenes, the carboxyl anchoring site, and the and Smart Solar Dryer for Indonesia Agriculture 4.0, in IOP Conference Series: Earth and Environmental Science, 2022, addition of an amine as the electron donating molecule. 998(1), 12052.doi: 10.1088/1755-1315/998/1/012052. Furthermore, the considerable effect of thiophene [7] Shiyani, T. & Bagchi, T. 2020. Hybrid nanostructures for solar- bridge was demonstrated in terms of structural and energy-conversion applications. Nanomater. Energy. 9(1). 39–46. energy gap, as well as the variation of electron donating doi: 10.1680/jnaen.19.00029. [8] Gong, J., Liang, J., & Sumathy, K. 2012. Review on dye-sensitized molecule that strongly affected the photonic properties. solar cells (DSSCs): fundamental concepts and novel materials. A robust roadmap design was constructed here from Renew. Sustain. Energy Rev. 16(8). 5848–5860. doi: the structural analysis to the photonic properties 10.1016/j.rser.2012.04.044. employing the DFT and TD-DFT level of calculation that [9] Devadiga, D., Selvakumar, M., Shetty, P., & Santosh, M.S. 2021. Recent progress in dye sensitized solar cell materials and could be used for other research related to any photo-supercapacitors: a review. J. Power Sources. 493. 229698. molecular design for photovoltaic application. Finally, doi: 10.1016/j.jpowsour.2021.229698. since all the results had been conducted by [10] Soto-Rojo, R., Baldenebro-López, J., & Glossman-Mitnik, D. 2016. computational studies, we encouraged others to carry Theoretical Study of the $π$-Bridge Influence with Different Units of Thiophene and Thiazole in Coumarin Dye-Sensitized out a significant research in the field of renewable Solar Cells. Int. J. Photoenergy. 2016(6479649). doi: energy even in the pandemic situation or in the future of 10.1155/2016/6479649. digital society. [11] Kumar, R.S., Jeong, H., Jeong, J., Chitumalla, R.K., Ko, M.J., Kumar, K.S., Jang, J., & Son, Y.-A. 2016. Synthesis of porphyrin SUPPORTING INFORMATION sensitizers with a thiazole group as an efficient $π$-spacer: potential application in dye-sensitized solar cells. RSC Adv. The supporting information related to the present 6(47). 41294–41303. doi: 10.1039/C6RA00353B. work can be downloaded here. [12] Kooh, M.R.R., Yoong, V.N., & Ekanayake, P. 2014. Density functional theory (DFT) and time-dependent density functional ACKNOWLEDGEMENTS theory (TDDFT) studies of selected ancient colourants as sensitizers in dye-sensitized solar cells. J. Natl. Sci. Found. Sri The authors highly acknowledge Mr. Muhamad A. Lanka. 42(2). doi: 10.4038/jnsfsr.v42i2.6996. Martoprawiro, Ph.D., who has guided this research and [13] Zanjanchi, F. & Beheshtian, J. 2019. Natural pigments in dye- Dr. Bunbun Bundjali for granting permission to use the sensitized solar cell (DSSC): a DFT-TDDFT study. J. Iran. Chem. Soc. 16(4). 795–805. doi: 10.1007/s13738-018-1561-2. research facilities at the Department of Chemistry, ITB. [14] AL-Temimei, F.A. & Alkhayatt, A.H.O. 2020. A DFT/TD-DFT The authors also acknowledge the Republic of investigation on the efficiency of new dyes based on ethyl red Indonesia Defense University for funding under the dye as a dye-sensitized solar cell light-absorbing material. LPPM internal research program. Optik (Stuttg). 208(163920). 1–7. doi: 10.1016/j.ijleo.2019.163920. [15] Tosco, P., Stiefl, N., & Landrum, G. 2014. Bringing the MMFF force field to the RDKit: implementation and validation. J. Cheminform. 6(1). 1–4. doi: 10.1186/s13321-014-0037-3. Nurrosyid et al.
23 Indones. J. Chem. Stud., 2022, 1(1), 16–23 [16] Hernandez-Haro, N., Ortega-Castro, J., Martynov, Y.B., chromophores for dye-sensitised solar cells. Dye. Pigment. Nazmitdinov, R.G., & Frontera, A. 2019. DFT prediction of band 94(3). 469–474. doi: 10.1016/j.dyepig.2012.02.015. gap in organic-inorganic metal halide perovskites: An [20] Tong, J. et al. 2021. High-performance methylammonium-free exchange-correlation functional benchmark study. Chem. Phys. ideal-band-gap perovskite solar cells. Matter. 4(4). 1365–1376. 516. 225–231. doi: 10.1016/j.chemphys.2018.09.023. doi: 10.1016/j.matt.2021.01.003. [17] Wu, Y.J. & Yang, B. V. 2011. Chapter 5.5: Five-membered ring [21] Krauter, C.M., Möhring, J., Buckup, T., Pernpointner, M., & systems: with N and S (Se). Prog. Heterocycl. Chem. 23. 685–714. Motzkus, M. 2013. Ultrafast branching in the excited state of doi: 10.1016/B978-0-08-096805-6.00009-7. coumarin and umbelliferone. Phys. Chem. Chem. Phys. 15(41). [18] Gao, P., Tsao, H.N., Yi, C., Grätzel, M., & Nazeeruddin, M.K. 2014. 17846–17861. doi: 10.1039/C3CP52719K. Extended $π$-Bridge in Organic Dye-Sensitized Solar Cells: the [22] Pulli, E., Rozzi, E., & Bella, F. 2020. Transparent photovoltaic Longer, the Better? Adv. Energy Mater. 4(7). 1301485. doi: technologies: Current trends towards upscaling. Energy 10.1002/aenm.201301485. Convers. Manag. 219. 112982. doi: 10.1016/j.enconman.2020.112982. [19] Seo, K.D., Choi, I.T., Park, Y.G., Kang, S., Lee, J.Y., & Kim, H.K. 2012. Novel D-A-π-A coumarin dyes containing low band-gap Nurrosyid et al.
You can also read