https://scholars.lib.ntu.edu.tw/handle/123456789/501648
Title: | Solution p-doped fluorescent polymers for enhanced charge transport of hybrid organic-silicon nanowire photovoltaics | Authors: | Tsai, Pei-Ting Li, Ming-Chin Lai, Yi-Chun Tseng, Wei-Hsuan Wu, Chih- Chen, Si-Han Lin, Yi-Cheng Chen, Yu-Cheng Hsiao, Rui-Chung Horng, Sheng-Fu Yu, Peichen CHIH-I WU YI-CHENG LIN |
Issue Date: | 2016 | Journal Volume: | 34 | Start page/Pages: | 246-253 | Source: | Organic Electronics | Abstract: | The solution p-type doping of various conjugated polymers and small molecules via blending with tetrafluorotetracyano-quinodimethane (F4-TCNQ) is investigated to facilitate hole transport for hybrid organic-silicon-nanowire solar cells. Among all, the highly-fluorescent conjugated polymers such as poly(9,9-dioctylfluorenyl-2,7-diyl) (PFO) demonstrate superior transport characteristics, where both the device fill-factor and power conversion efficiency (PCE) are positively correlated with the doping concentration. The best PCE achieves 13.66% from the device with 30% p-doped PFO, compared to the reference at 12.50%. The enhancement is ascribed to the efficient interfacial charge-carrier recombination with minimal energy losses. A vertically graded doping profile is further revealed with F4-TCNQ molecules preferentially accumulated near the silicon surface. © 2016 Elsevier B.V. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/501648 | ISSN: | 1566-1199 | DOI: | 10.1016/j.orgel.2016.04.005 | SDG/Keyword: | Blending; Cell engineering; Charge transfer; Conjugated polymers; Energy dissipation; Fluorescence; Heterojunctions; Molecules; Nanowires; Phosphorus; Silicon; Solar cells; Doping concentration; Fluorescent conjugated polymers; Graded doping profiles; Hybrid solar cells; Interface engineering; Power conversion efficiencies; Surface recombinations; Transport characteristics; Polymer solar cells |
Appears in Collections: | 電機工程學系 |
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