標題: 13% Efficiency Hybrid Organic/Silicon-Nanowire Heterojunction Solar Cell via Interface Engineering
作者: Yu, Peichen
Tsai, Chia-Ying
Chang, Jan-Kai
Lai, Chih-Chung
Chen, Po-Han
Lai, Yi-Chun
Tsai, Pei-Ting
Li, Ming-Chin
Pan, Huai-Te
Huang, Yang-Yue
Wu, Chih-I
Chueh, Yu-Lun
Chen, Shih-Wei
Du, Chen-Hsun
Horng, Sheng-Fu
Meng, Hsin-Fei
物理研究所
光電工程學系
Institute of Physics
Department of Photonics
關鍵字: hybrid solar cell;interface engineering;conductive polymer;small molecule
公開日期: 1-十二月-2013
摘要: Interface carrier recombination currently hinders the performance of hybrid organic silicon heterojunction solar cells for high-efficiency low-cost photovoltaics. Here, we introduce an intermediate 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAP() layer into hybrid heterojunction solar cells based on silicon nanowires (SINWs) and conjugate polymer poly(3,4-ethylenedioxy-thiophene):poly(styrenesulfonate) (PEDOT:PSS). The highest power conversion efficiency reaches a record 13.01%, which is largely ascribed to the modified organic surface morphology and suppressed saturation current that boost the open-circuit voltage and fill factor. We show that the insertion of TAP( increases the minority carrier lifetime because of an energy offset at the heterojunction interface. Furthermore, X-ray photoemission spectroscopy reveals that TAP( can effectively block the strong oxidation reaction occurring between PEDOT:PSS and silicon, which improves the device characteristics and assurances for reliability. These learnings point toward future directions for versatile interface engineering techniques for the attainment of highly efficient hybrid photovoltaics.
URI: http://dx.doi.org/10.1021/nn403982b
http://hdl.handle.net/11536/23425
ISSN: 1936-0851
DOI: 10.1021/nn403982b
期刊: ACS NANO
Volume: 7
Issue: 12
起始頁: 10780
結束頁: 10787
顯示於類別:期刊論文


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