Статья

Fibril Network Strategy Enables High‐Performance Semitransparent Organic Solar Cells

Yuanpeng XieSchool of Chemistry Beihang University Beijing 100191 P. R. ChinaYunhao CaiSchool of Chemistry Beihang University Beijing 100191 P. R. ChinaLei ZhuSchool of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. ChinaRuoxi XiaState Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. ChinaLinglong YeCollege of Chemistry Xiangtan University Xiangtan 411105 P. R. ChinaXiang FengFrontier Institute of Science and Technology Xi'an Jiaotong University Xi'an 710054 P. R. ChinaHin‐Lap YipState Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. ChinaFeng LiuSchool of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 P. R. ChinaGuanghao LuFrontier Institute of Science and Technology Xi'an Jiaotong University Xi'an 710054 P. R. ChinaSongting TanCollege of Chemistry Xiangtan University Xiangtan 411105 P. R. ChinaYanming SunSchool of Chemistry Beihang University Beijing 100191 P. R. China

2020en

ABI

Аннотация

Abstract The development of semitransparent organic solar cells (ST‐OSCs) represents a significant step toward the commercialization of OSCs. However, the trade‐off between power conversion efficiency (PCE) and average visible transmittance (AVT) restricts further improvements of ST‐OSCs. Herein, it is demonstrated that a fibril network strategy can enable ST‐OSCs with a high PCE and AVT simultaneously. A wide‐bandgap polymer PBT1‐C‐2Cl that can self‐assemble into a fibril nanostructure is used as the donor and a near‐infrared small molecule Y6 is adopted as the acceptor. It is found that a tiny amount of PBT1‐C‐2Cl in the blend can form a high speed pathway for hole transport due to the well distributed fibril nanostructure, which increases the transmittance in the visible region. Meanwhile, the acceptor Y6 guarantees sufficient light absorption. Using this strategy, the optimized ST‐OSCs yield a high PCE of 9.1% with an AVT of over 40% and significant light utilization efficiency of 3.65% at donor/acceptor ratio of 0.25:1. This work demonstrates a simple and effective approach to realizing high PCE and AVT of ST‐OSCs simultaneously.

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Идентификаторы

DOI: 10.1002/adfm.202002181

Цитирования и источники

Цитирований: 2Использованных источников: 0

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