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 |