材料科学
三元运算
活动层
有机太阳能电池
能量转换效率
氢键
分子内力
透射率
吸收(声学)
热稳定性
化学工程
图层(电子)
光电子学
复合材料
纳米技术
聚合物
有机化学
分子
薄膜晶体管
程序设计语言
工程类
计算机科学
化学
作者
Xueqiang Lu,Luye Cao,Xiaoyang Du,Hui Lin,Caijun Zheng,Zhenhua Chen,Bo Sun,Silu Tao
标识
DOI:10.1002/adom.202100064
摘要
Abstract Semitransparent organic solar cells (ST‐OSCs) have huge potential in terms of building integrated photovoltaics (BIPVs). However, the inherent contradiction between active layer absorption and average visible‐light transmittance (AVT) hinders the follow‐up development of ST‐OSC. To solve this problem, hydrogen bond strategy has been adopted to simultaneously improve the photon trapping capability and film thickness tolerance of the devices. Here, an organic small molecule material DIBC is introduced into PM6:Y6 system to form an intramolecular hydrogen bond with Y6, through which a high power conversion efficiency (PCE) of 17.20% is obtained. It is noted that when the active layer thickness is varied from 70 to 150 nm, the PCE values distributed in the range of 16.39–17.20%, which exhibits excellent film thickness tolerance. Moreover, ST‐OSCs are achieved with a maximum PCE of 14% and a high AVT of 21.60%, which is among the best reported results of ST‐OSCs. In addition, hydrogen‐bond‐based ST‐OSCs show superior thermal and light stability in the atmospheric environment corresponding to the control devices. This work provides a feasible solution for ST‐OSC with outstanding efficiency and high AVT, which is of great significance for the industrial production of BIPVs in the future.
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