To Maximize Luminescence for an Efficient Organic Solar Cell  

作　　者：Yifei Geng Tengfei Li Zhenzhen Zhang Yuze Lin 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Organic Solids,Institute of Chemistry,Chinese Academyof Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Journal of Chemistry》2024年第23期3157-3168,共12页中国化学(英文版)

基　　金：financial support from the Beijing Natural Science Foundation(2232075);the National Natural Science Foundation of China(22335001,52173189);the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB0520102).

摘　　要：With the continuous development of photovoltaic materials,organic solar cells(OSCs)have made remarkable advancements,surpassing a power conversion efficiency(PCE)of 20%.However,the PCEs of OSCs remain lower than that of inorganic solar cells due to significant energy losses,mainly stemming from the relatively large non-radiative recombination losses(usually be expressed as∆E3),resulting in low open-circuit voltages.This can be achieved by reducing non-radiative recombination,and hereby increasing the electroluminescence quantum efficiency(EQE_(EL))of the photo-active layer.This review analyzes the significance of luminescence efficiency in achieving high-performance OSCs by examining the reciprocal relationship between∆E3 and EQE_(EL).High-efficiency organic solar cells can also be used as effective organic light-emitting diodes(OLEDs).The discussion provides insights into the influencing factors of EQE_(EL)and the mechanisms for adjusting various parameters,which include enhancements in photoluminescence quantum yield and the proportion of radiative excitons.The objective is to offer insights into the crucial role of luminescence performance in OSC development,guiding researchers toward developing novel photovoltaic materials or optimization strategies to enhance the luminescence performance of the active layer in OSCs,fostering the simultaneous advancement of OSCs and OLEDs.

关 键 词：Organic solar cell Energy loss Electroluminescence quantum efficiency Photoluminescence quantum yield Non-radiativerecombination 

分 类 号：TM914.4[电气工程—电力电子与电力传动]