標題: High efficiency ternary organic solar cell with morphology-compatible polymers
作者: Mai, Jiangquan
Lu, Haipeng
Lau, Tsz-Ki
Peng, Shih-Hao
Hsu, Chain-Shu
Hua, Wenqiang
Zhao, Ni
Xiao, Xudong
Lu, Xinhui
應用化學系
Department of Applied Chemistry
公開日期: 21-Jun-2017
摘要: Ternary organic solar cell is a promising strategy for improving the power conversion efficiency (PCE) of single-junction organic solar cells by broadening the light absorption spectrum with the incorporation of two electron donors and one acceptor or one donor and two acceptors. However, in many cases the optimized loading of the third component is so small that its contribution to the light absorption is limited. Following our previously proposed selection rule for the two polymers capable of comparable loadings, we report in this work a ternary system composed of two morphologically compatible polymers with distinct chemical structures that can achieve a high PCE of 9.0% with a mass ratio of 1:1. Besides the expected improvement in short circuit current due to the broadening of the absorption spectrum, the fill factor of the ternary device is improved significantly. We attribute it to the balanced electron and hole mobility and reduced recombination benefiting from the high morphology compatibility of the system.
URI: http://dx.doi.org/10.1039/c7ta00292k
http://hdl.handle.net/11536/145625
ISSN: 2050-7488
DOI: 10.1039/c7ta00292k
期刊: JOURNAL OF MATERIALS CHEMISTRY A
Volume: 5
起始頁: 11739
結束頁: 11745
Appears in Collections:Articles