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Chen X, Jia C, Wan Z, Zhang J, Yao X. Theoretical investigation of phenothiazine-triphenylamine-based organic dyes with different π spacers for dye-sensitized solar cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 123:282-289. [PMID: 24398472 DOI: 10.1016/j.saa.2013.12.072] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 12/06/2013] [Accepted: 12/15/2013] [Indexed: 06/03/2023]
Abstract
Three phenothiazine-triphenylamine-based organic dyes (CD-1, CD-2 and CD-3) are designed based on the dye WD-8. The geometries, electronic structures, and electronic absorption spectra of these dyes before and after binding to TiO2 are studied by density functional theory (DFT) and time-dependent density functional theory (TD-DFT). The calculated geometries indicate that these dyes show good steric hindrance effect which is advantage to inhibit the close intermolecular π-π aggregation effectively. The lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) energy levels of these dyes could ensure positive effect on the process of electron injection and dye regeneration. The simulated spectra of CD-1∼3 show better absorption than that of WD-8 in the low energy zone. All the calculated results demonstrate that these dyes could be used as potential sensitizers for DSSCs and show better performances than WD-8.
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Affiliation(s)
- Ximing Chen
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, PR China
| | - Chunyang Jia
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, PR China.
| | - Zhongquan Wan
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054, PR China
| | | | - Xiaojun Yao
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
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Tamilavan V, Kim AY, Kim HB, Kang M, Hyun MH. Structural optimization of thiophene-(N-aryl)pyrrole-thiophene-based metal-free organic sensitizer for the enhanced dye-sensitized solar cell performance. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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53
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Zhu S, An Z, Chen X, Chen P, Liu Q. Approach to tune short-circuit current and open-circuit voltage of dye-sensitized solar cells: π-linker modification and photoanode selection. RSC Adv 2014. [DOI: 10.1039/c4ra07967a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The modification of the π-linker of cyclic thiourea functionalized dyes has a significant effect on the short-circuit current density and open-circuit voltage of dye-sensitized solar cells.
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Affiliation(s)
- Shengbo Zhu
- Key Laboratory of Applied Surface and Colloid Chemistry
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an 710062, China
| | - Zhongwei An
- Key Laboratory of Applied Surface and Colloid Chemistry
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an 710062, China
- Xi'an Modern Chemistry Research Institute
| | - Xinbing Chen
- Key Laboratory of Applied Surface and Colloid Chemistry
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an 710062, China
| | - Pei Chen
- Key Laboratory of Applied Surface and Colloid Chemistry
- School of Materials Science and Engineering
- Shaanxi Normal University
- Xi'an 710062, China
| | - Qianfeng Liu
- Xi'an Ruilian Modern Electronic Chemicals Co. Ltd
- Xi'an 710077, China
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54
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Cheng M, Yang X, Zhao J, Chen C, Tan Q, Zhang F, Sun L. Efficient organic dye-sensitized solar cells: molecular engineering of donor-acceptor-acceptor cationic dyes. CHEMSUSCHEM 2013; 6:2322-2329. [PMID: 24039097 DOI: 10.1002/cssc.201300481] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Indexed: 06/02/2023]
Abstract
Three metal-free donor-acceptor-acceptor sensitizers with ionized pyridine and a reference dye were synthesized, and a detailed investigation of the relationship between the dye structure and the photophysical and photoelectrochemical properties and the performance of dye-sensitized solar cells (DSSCs) is described. The ionization of pyridine results in a red shift of the absorption spectrum in comparison to that of the reference dye. This is mainly attributable to the ionization of pyridine increasing the electron-withdrawing ability of the total acceptor part. Incorporation of the strong electron-withdrawing units of pyridinium and cyano acrylic acid gives rise to optimized energy levels, resulting in a large response range of wavelengths. When attached to TiO2 film, the conduction band of TiO2 is negatively shifted to a different extent depending on the dye. This is attributed to the electron recombination rate between the TiO2 film and the electrolyte being efficiently suppressed by the introduction of long alkyl chains and thiophene units. DSSCs assembled using these dyes show efficiencies as high as 8.8 %.
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Affiliation(s)
- Ming Cheng
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Centre on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Rd., 116024 Dalian (P.R. China), Fax: (+86) 411-84986250
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55
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Marotta G, Reddy MA, Singh SP, Islam A, Han L, De Angelis F, Pastore M, Chandrasekharam M. Novel carbazole-phenothiazine dyads for dye-sensitized solar cells: a combined experimental and theoretical study. ACS APPLIED MATERIALS & INTERFACES 2013; 5:9635-9647. [PMID: 24025169 DOI: 10.1021/am402675q] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report a joint experimental and computational work on new organic donor-acceptor dye sensitizers in which a carbazole (CZ) and a phenothiazine (PTZ) units are linked together by an alkyl C6H13, while two different anchoring groups are employed: the cyanoacrylic acid (CS1A, CSORG1) and the rhodanine-3-acetic acid (CS4A, CSORG4). The CZ moiety has multiple roles of (i) acting as an extra-electron donor portion, providing more electron density on the PTZ; (ii) suppressing the back-electron transfer from TiO2 to the electrolyte by forming a compact insulating dye layer; (iii) modulating dye aggregation on the semiconductor surface; and (iv) acting as an antenna, collecting photons and, through long-range energy transfer, redirecting the captured energy to the dye sensitizer. We show that the introduction of the CZ donor remarkably enhances the photovoltaic performances of the rhodanine-based dye, compared to the corresponding simple PTZ dye, with more than a two-fold increase in the overall efficiencies, while it does not bring beneficial effects in the case of the cyanoacrylic-based sensitizer. Based on quantum mechanical calculations and experimental measurements, we show that, in addition to a favored long-range energy transfer, which increases the light absorption in the blue region of the spectrum, the presence of the CZ unit in the CSORG4 dye effectively induces a beneficial aggregation pattern on the semiconductor surface, yielding a broadened and red-shifted light absorption, accounting for the two-fold increase in the generated photocurrent.
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Affiliation(s)
- Gabriele Marotta
- Computational Laboratory for Hybrid Organic Photovoltaics (CLHYO), Istituto CNR di Scienze e Tecnologie Molecolari , via Elce di Sotto 8, I-06123, Perugia, Italy
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56
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Liu Y, Yang YM, Chen CC, Chen Q, Dou L, Hong Z, Li G, Yang Y. Solution-processed small molecules using different electron linkers for high-performance solar cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:4657-4662. [PMID: 23824701 DOI: 10.1002/adma.201301716] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 05/17/2013] [Indexed: 06/02/2023]
Abstract
Conjugated acceptor-donor-acceptor small molecules using different electron linkers are designed, synthesized, and used in organic solar cells. All of these small molecules show high photoconversion efficiencies (PCEs), ranging from 3.18-6.15% under simulated AM 1.5G condition. A maximum PCE of 6.15% combined with a high Voc of 0.85 V, a Jsc of 10.79 mA cm(-2) and a notable FF of 67.1% are achieved with T3/PC71 BM blend based devices using polydimethylsiloxane as additive.
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Affiliation(s)
- Yongsheng Liu
- Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, USA; California Nano Systems Institute, University of California, Los Angeles, CA 90095, USA
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57
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Schubert C, Wielopolski M, Mewes LH, de Miguel Rojas G, van der Pol C, Moss KC, Bryce MR, Moser JE, Clark T, Guldi DM. Precise Control of Intramolecular Charge-Transport: The Interplay of Distance and Conformational Effects. Chemistry 2013; 19:7575-86. [DOI: 10.1002/chem.201204055] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 03/07/2013] [Indexed: 11/08/2022]
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58
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Wu Z, An Z, Chen X, Chen P. Cyclic Thiourea/Urea Functionalized Triphenylamine-Based Dyes for High-Performance Dye-Sensitized Solar Cells. Org Lett 2013; 15:1456-9. [DOI: 10.1021/ol4001685] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhisheng Wu
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), School of Materials Science and Engineering, Shaanxi Normal University, 710162, P. R. China, and Xi’an Modern Chemistry Research Institute, Xi’an 710065, P. R. China
| | - Zhongwei An
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), School of Materials Science and Engineering, Shaanxi Normal University, 710162, P. R. China, and Xi’an Modern Chemistry Research Institute, Xi’an 710065, P. R. China
| | - Xinbing Chen
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), School of Materials Science and Engineering, Shaanxi Normal University, 710162, P. R. China, and Xi’an Modern Chemistry Research Institute, Xi’an 710065, P. R. China
| | - Pei Chen
- Key Laboratory of Applied Surface and Colloid Chemistry (MOE), School of Materials Science and Engineering, Shaanxi Normal University, 710162, P. R. China, and Xi’an Modern Chemistry Research Institute, Xi’an 710065, P. R. China
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59
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Cheng M, Yang X, Chen C, Zhao J, Tan Q, Sun L. Effect of the acceptor on the performance of dye-sensitized solar cells. Phys Chem Chem Phys 2013; 15:17452-9. [DOI: 10.1039/c3cp52314d] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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60
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Hao Y, Liang M, Wang Z, Wang L, Sun Y, Sun Z, Xue S. 3,4-Ethylenedioxythiophene as an electron donor to construct arylamine sensitizers for highly efficient iodine-free dye-sensitized solar cells. Phys Chem Chem Phys 2013; 15:15441-9. [DOI: 10.1039/c3cp52131a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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