標題: Rear interface engineering of hybrid organic-silicon nanowire solar cells via blade coating
作者: Lai, Yi-Chun
Chang, Yu-Fan
Tsai, Pei-Ting
Chang, Jan-Kai
Tseng, Wei-Hsuan
Lin, Yi-Cheng
Hsiao, Chu-Yen
Zan, Hsiao-Wen
Wu, Chih-I
Chi, Gou-Chung
Meng, Hsin-Fei
Yu, Peichen
物理研究所
光電工程學系
光電工程研究所
Institute of Physics
Department of Photonics
Institute of EO Enginerring
公開日期: 25-Jan-2016
摘要: In this work, we investigate blade-coated organic interlayers at the rear surface of hybrid organic-silicon photovoltaics based on two small molecules: Tris(8-hydroxyquinolinato) aluminium (Alq(3)) and 1,3-bis(2-(4-tert- butylphenyl)-1,3,4-oxadiazol-5-yl) benzene (OXD-7). In particular, soluble Alq3 resulting in a uniform thin film with a root-mean-square roughness < 0.2nm is demonstrated for the first time. Both devices with the Alq3 and OXD-7 interlayers show notable enhancement in the open-circuit voltage and fill-factor, leading to a net efficiency increase by over 2% from the reference, up to 11.8% and 12.5% respectively. The capacitance-voltage characteristics confirm the role of the small-molecule interlayers resembling a thin interfacial oxide layer for the Al-Si Schottky barrier to enhance the built-in potential and facilitate charge transport. Moreover, the Alq3 interlayer in optimized devices exhibits isolated phases with a large surface roughness, in contrast to the OXD-7 which forms a continuous uniform thin film. The distinct morphological differences between the two interlayers further suggest different enhancement mechanisms and hence offer versatile functionalities to the advent of hybrid organic-silicon photovoltaics. (C)2016 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.24.00A414
http://hdl.handle.net/11536/133052
ISSN: 1094-4087
DOI: 10.1364/OE.24.00A414
期刊: OPTICS EXPRESS
Volume: 24
Issue: 2
起始頁: 0
結束頁: 0
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