能量转换效率
三元运算
活动层
开路电压
光电子学
短路
光伏系统
接受者
电压
工作(物理)
量子效率
有机太阳能电池
材料科学
化学工程
图层(电子)
纳米技术
计算机科学
电气工程
物理
复合材料
工程类
热力学
程序设计语言
聚合物
薄膜晶体管
凝聚态物理
作者
Mengni Wang,Yanan Shi,Ziqi Zhang,Yifan Shen,Min Lv,Yangjun Yan,Huiqiong Zhou,Jianqi Zhang,Kun Lü,Yajie Zhang,Lian‐Mao Peng,Zhixiang Wei
出处
期刊:Nanoscale horizons
[The Royal Society of Chemistry]
日期:2023-01-01
卷期号:8 (8): 1073-1081
摘要
Effectively reducing the voltage loss in organic solar cells (OSCs) is critical to improving the power conversion efficiency (PCE) of OSCs. In this study, highly efficient ternary OSCs were constructed by adding a non-fullerene acceptor Qx2 with a high open-circuit voltage (VOC) and low energy loss (Eloss) into PM6:m-BTP-PhC6 based binary devices. The third component Qx2 shows slightly complementary absorption with m-BTP-PhC6 and also optimizes the molecular packing, orientation, and morphology of the active layer. Moreover, the incorporation of Qx2 reduced the energetic disorder and improved the electroluminescence quantum efficiency, which suppresses the Eloss and further leads to a higher VOC than the PM6:m-BTP-PhC6 binary blend. Consequently, synergetic enhancements of VOC, short circuit current (JSC), and fill factor (FF) are realized, resulting in the PCE of 18.60%. This work shows that the selection of the appropriate third component has positive implications for reducing Eloss and improving the PCE of OSCs.
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