固体添加剂2-(噻吩-2-亚甲基)丙二腈的合成及其有机光伏性能  

Synthesis of Solid Additive 2-(thiophene-2-methylene)malononitrile and its Organic Photovoltaic Performance

作　　者：沈星星 罗丹 何源 杨述 谢家平 侯文龙 韩璐 SHEN Xingxing;LUO Dan;HE Yuan;XIE Jiaping;HOU Wenlong;HAN Lu(College of Chemical Engineering,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066600;College of Chemistry,Nanchang University;Analysis and Testing Center,Hebei Normal University of Science and Technology,China)

机构地区：[1]河北科技师范学院化学工程学院,河北秦皇岛066600 [2]南昌大学化学学院 [3]河北科技师范学院分析测试中心

出　　处：《河北科技师范学院学报》2024年第2期59-65,共7页Journal of Hebei Normal University of Science & Technology

基　　金：河北省自然科学基金青年科学基金资助项目(项目编号:B2021407003);河北省高等学校科学研究项目(项目编号:QN2021068);河北省引进留学人员资助项目(项目编号:C20230119)。

摘　　要：为了提高有机光伏器件性能,合成了一种结构简单、成本低的固体添加剂2-(噻吩-2-亚甲基)丙二腈(SAT),并测试了其对非富勒烯有机太阳能电池性能的影响。测试结果显示,优化后的共混薄膜的紫外可见吸收光谱红移了14 nm,荧光强度显著降低。而且,薄膜的结晶度更高,形成的相分离形貌更加均匀,分子堆叠更加有序,有利于激子分离和电荷传输。与未使用SAT优化的器件相比,当SAT的质量浓度为5 mg/mL时,开路电压由0.85 V降低至0.83 V,短路电流由21.15 mA/cm^(2)提升至23.58 mA/cm^(2),填充因子由65.70%提升至71.17%,能量转换效率由11.89%提升至13.90%。A simple and low-cost solid additive 2-(thiophene-2-methylene)malononitrile(SAT)was synthesized to improve the performance of organic photovoltaic devices,and its effects on the performance of organic solar cells were tested.The results showed that UV-vis absorption spectrum of the optimized blend film was red-shifted by 14 nm,and the fluorescence intensity was reduced significantly.The crystallinity,phase separation morphology and molecular stacking were improved for better exciton separation and charge transfer.When the mass concentration of SAT was 5 mg/mL,the open-circuit voltage decreased from 0.85 V to 0.83 V,and the short-circuit current increased from^(2)1.15 mA/cm^(2) to 23.58 mA/cm^(2),the fill factor increased from 65.70%to 71.17%and the power conversion efficiency increased from 11.89%to 13.90%.

关 键 词：有机太阳能电池 固体添加剂 2-(噻吩-2-亚甲基)丙二腈 光伏性能 

分 类 号：TM914.4[电气工程—电力电子与电力传动]