All-polymer organic solar cells with nano-to-micron hierarchical morphology and large light receiving angle.

Autor: Zeng, Rui, Zhu, Lei, Zhang, Ming, Zhong, Wenkai, Zhou, Guanqing, Zhuang, Jiaxing, Hao, Tianyu, Zhou, Zichun, Zhou, Libo, Hartmann, Nicolai, Xue, Xiaonan, Jing, Hao, Han, Fei, Bai, Yiming, Wu, Hongbo, Tang, Zheng, Zou, Yecheng, Zhu, Haiming, Chen, Chun-Chao, Zhang, Yongming
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Zdroj: Nature Communications; 7/12/2023, Vol. 14 Issue 1, p1-10, 10p
Abstrakt: Distributed photovoltaics in living environment harvest the sunlight in different incident angles throughout the day. The development of planer solar cells with large light-receiving angle can reduce the requirements in installation form factor and is therefore urgently required. Here, thin film organic photovoltaics with nano-sized phase separation integrated in micro-sized surface topology is demonstrated as an ideal solution to proposed applications. All-polymer solar cells, by means of a newly developed sequential processing, show large magnitude hierarchical morphology with facilitated exciton-to-carrier conversion. The nano fibrilar donor-acceptor network and micron-scale optical field trapping structure in combination contributes to an efficiency of 19.06% (certified 18.59%), which is the highest value to date for all-polymer solar cells. Furthermore, the micron-sized surface topology also contributes to a large light-receiving angle. A 30% improvement of power gain is achieved for the hierarchical morphology comparing to the flat-morphology devices. These inspiring results show that all-polymer solar cell with hierarchical features are particularly suitable for the commercial applications of distributed photovoltaics due to its low installation requirement. A large light-receiving angle in planar solar cells is crucial for flexible installation of distributed photovoltaics. Here, authors report sequential-processed all-polymer solar cells with nano-sized phase separation integrated in micro-sized surface topology and maximum efficiency of over 19%. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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