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| 題名: | Comprehensive study of pyrido[3,4-b]pyrazine-based D-π-a copolymer for efficient polymer solar cells |
| 作者: | 張勝雄;Wu, Yu-Qi;Chen, Hsieh-Chih;Yang, Yun-Siou;Chang, Sheng Hsiung;Wu, Pin-Jiun;Chu, Yen-Yi;Wu, Chun-Guey |
| 貢獻者: | 理學院光電科學與工程學系 |
| 關鍵詞: | Absorption;Blends;bulk heterojunction;composite polymers;Copolymers;dissociation;energy;Energy levels;Excitation spectra;Photovoltaic cells;quinoxaline;Solar cells;Spectra;structure-function relationship;time-resolved photoluminescence |
| 日期: | 2016-06-15 |
| 上傳時間: | 2026-04-23 11:25:07 (UTC+8) |
| 出版者: | John Wiley and Sons Inc.;Wiley |
| 摘要: | 摘要： Two D–π–A copolymers, based on the benzo[1,2‐b:4,5‐b′]‐dithiophene (BDT) as a donor unit and benzo‐quinoxaline (BQ) or pyrido‐quinoxaline (PQ) analog as an acceptor (PBDT‐TBQ and PBDT‐TPQ), were designed and synthesized as a p‐type material for bulk heterojunction (BHJ) photovoltaic cells. When compared with the PBDT‐TBQ polymer, PBDT‐TPQ exhibits stronger intramolecular charge transfer, showing a broad absorption coverage at the red region and narrower optical bandgap of 1.69 eV with a relatively low‐lying HOMO energy level at −5.24 eV. The experimental data show that the exciton dissociation efficiency of PBDT‐TPQ:PC₇₁BM blend is better than that in the PBDT‐TBQ:PC₇₁BM blend, which can explain that the IPCE spectra of the PBDT‐TPQ‐based solar cell were higher than that of the PBDT‐TBQ‐based solar cell. The maximum efficiency of PBDT‐TPQ‐based device reaches 4.40% which is much higher than 2.45% of PBDT‐TBQ, indicating that PQ unit is a promising electron‐acceptor moiety for BHJ solar cells. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016, 54, 1822–1833
其他題名： J. Polym. Sci. Part A: Polym. Chem
出版者： Wiley
出版日期： 2016-06-15
出處： Journal of polymer science. Part A, Polymer chemistry, 2016-06, Vol.54 (12), p.1822-1833
版權： 2016 Wiley Periodicals, Inc.
識別號： ISSN: 0887-624X
識別號： EISSN: 1099-0518
識別號： DOI: 10.1002/pola.28044 |
| 顯示於類別: | [光電科學與工程學系] 期刊論文
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