高等学校化学学报2023，Vol.44Issue(7)：14-23,10.DOI:10.7503/cjcu20230047
聚合物添加剂作为形貌调节剂提升全小分子有机太阳能电池的效率和稳定性
All-small-molecule Organic Solar Cells with Enhanced Efficiency and Stability Enabled by Polymer Additive as a Morphology Modulator
摘要
Abstract
For all-small-molecule organic solar cells(ASM-OSCs),modulating the morphology of active layer has been a challenging and urgent issue to achieve high efficiency and stablity.In this work,a polymer donor PM7 as a morphology modulator was incorporated to a BTTzR:Y6 system to fabricate ternary ASM-OSCs.A small amount of PM7 could promote more favourable nanostructure and ordered molecular packing in the blend film,resulting in more efficient excition dissiociation and charge carrier transport in the device.As a result,the optimal ternary devices exhibited a significantly improved power conversion efficiency(PCE)of 16.0%with simultaneously enhanced short circuit current(JSC)and fill factor(FF)compared to the binary devices with a PCE of 13.9%.Notably,after being heated at 85℃for 2200 min,the ternary devices still retained 79%of its initial PCE,whereas the binary devices showed larger decay to 43%in the same duration.The results demonstrated that adding the polymer additive can effectively modulate the blend morphology for highly efficient and stable ASM-OSCs.关键词
全小分子有机太阳能电池/聚合物添加剂/形貌调控/高效率与稳定性Key words
All-small-molecule organic solar cell/Polymer additive/Morphology modulator/High efficiency and stability分类
化学化工引用本文复制引用
时宇,张榴,国霞,王阳,肖海芹,房进,周祎,张茂杰..聚合物添加剂作为形貌调节剂提升全小分子有机太阳能电池的效率和稳定性[J].高等学校化学学报,2023,44(7):14-23,10.基金项目
国家自然科学基金(批准号:51973146)和山东省自然科学基金会(批准号:ZR2022JQ09)资助.Supported by the National Natural Science Foundation of China(No.51973146)and the Shandong Provincial Natural Science Foundation,China(No.ZR2022JQ09). （批准号:51973146）
