https://scholars.lib.ntu.edu.tw/handle/123456789/467517
標題: | Visibly transparent conjugated polymers based on non-alternant cyclopenta-fused emeraldicene for polymer solar cells | 作者: | Chao, Y.-C. Yeh, S.-C. Hsu, H.-L. Jiang, B.-H. Sun, K.-H. Chen, C.-T. Chen, C.-P. Jeng, R.-J. RU-JONG JENG |
關鍵字: | Additive crosslinker; Emeraldicene; High transparency; Polymer solar cells; Thermal stability | 公開日期: | 2017 | 卷: | 49 | 起(迄)頁: | 114-122 | 來源出版物: | Organic Electronics | 摘要: | In this study, we synthesized two emeraldicene (EMD)-based conjugated polymers, PBTEMD and PFEMD, through polymerization of 4,7-di(thien-2-yl)benzo[c][1,2,5]thiadiazole and 9,9-bis(2-ethylhexyl)-9H-fluorene, respectively. We then blended these EMD-derived polymers (as electron-donating materials) with [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) in the active layers of polymer solar cells (PSCs) and investigate their optoelectronic properties and related photovoltaic performance. To best of our knowledge, this study is the first to use EMD derivatives for PSC applications. We compared the molecular structures, absorption behavior, energy levels, thermal properties, and thermal stability of these two polymers to determine their suitability for use in PSCs. The main absorption of PFEMD was in the near-IR spectrum (600–800 nm). We observed a transparency of greater than 80% for the blend film of PFEMD having a thickness of 95 nm; the constructed device exhibited a power conversion efficiency (PCE) of 2.5% and the transparent PFEMD:PC61BM-derived device exhibited a PCE of 1.2% under AM 1.5 G irradiation (100 mW cm−2). We observed a significant improvement in thermal stability for the device incorporating the additive crosslinker TBT-N3; it retained approximately 60% of its initial PCE after accelerated heating (150 °C) for 18 h. In contrast, the PCE of the corresponding normal device decayed to 0.01% of its initial value. © 2017 Elsevier B.V. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/467517 | DOI: | 10.1016/j.orgel.2017.06.049 | SDG/關鍵字: | Absorption spectroscopy; Butyric acid; Conjugated polymers; Solar cells; Solar power generation; Thermodynamic stability; Transparency; Based conjugated polymers; Crosslinker; Emeraldicene; High transparency; Optoelectronic properties; Photovoltaic performance; Polymer solar cell (PSCs); Power conversion efficiencies; Polymer solar cells |
顯示於: | 高分子科學與工程學研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。