新型三元聚合物给体材料的合成及在有机太阳能电池中的应用  

Synthesis of a New Random Terpolymer Donor with an Application to Organic Solar Cells

作　　者：任静琨[1] 刘伟鹏[1] 李战峰[1] 孙钦军[1] 王华[2] 史方[1] 郝玉英[1] REN Jingkun LIU Weipeng LI Zhanfeng SUN Qinjun WANG Hua SHI Fang HAO Yuying(Key Lab of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024 Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024)

机构地区：[1]太原理工大学物理与光电工程学院,新型传感器与智能控制教育部(山西省)重点实验室,太原030024 [2]太原理工大学,新材料界面科学与工程省部共建教育部重点实验室,太原030024

出　　处：《材料导报》2017年第17期133-137,共5页Materials Reports

基　　金：国家自然科学基金(61308093;61571317;61274056;11504257;61475109);博士点新教师基金(20131402120020);中国博士后科学基金(2015M572454)

摘　　要：以吡咯并[3,4-c]吡咯二酮(DPP)为A单元,苯并[1,2-b∶4,5-b′]二噻吩(BDT)和萘为D单元,合成了一种新型2D/A型三元共轭聚合物太阳能电池给体材料(PDPP-BDT-NT),通过核磁共振氢谱(1 H NMR)对其结构进行了表征,通过热重分析、紫外-可见吸收光谱(UV-Vis)、循环伏安法对其热学性质、光物理性能及能级结构进行了研究。PDPP-BDT-NT具有较好的热稳定性,热分解的温度为401℃,有较宽的吸收光谱,可覆盖300~900nm,最高占据轨道(HOMO)能级为-5.35eV。以聚合物PDPP-BDT-NT为给体材料,PC60BM为受体材料,制备了一系列有机聚合物太阳能电池,在大气质量(AM)为1.5G,功率为100mW·cm-2模拟的太阳光照射下,有机聚合物太阳能电池的光电转化效率(PCE)可达2.09%。甲醇处理后,有机聚合物太阳能电池的PCE可达2.34%。A new random 2D/A terpolyrner PDPP-BDT-NT comprising diketopyrrolo[-3,4-c]pyrrole-1,4-dione （DPP） as A unit, benzo[1,2-b：4,5-b′]dithiophene （BDT） and naphthalene （NT） as D units has been designed and synthesized via Stille coupling polymerization specifically for polymer solar cells （PSCs）. Its structure was defined by proton nuclear magnetic resonance （1 H NMR）. And its thermogravimetric analysis, photophysical properties and energy-level structure were studied by thermal property, ultraviolet-visble （UV-Vis） absorption spectra, and cyclic volta mmetry（CV）. PDPP-BDT-NT exhibited good thermal stability with a decomposition temperature over 401℃. The terpolymer presented both broad absorption （300-900 nm） and low highest occupied molecular orbital level for -5. 35 eV. Preliminary studies of bulk heterojunction （BHJ） solar cells based on PDPP-BDT-NT as donor material with PC60 BM as acceptor material showed a promising power conversion efficiency （PCE） of 2. 09 % without any processing and post-treatment （under the illumination of AM 1.5, 100 mW · cm^-2 ）, after MeOH treatment, the PCE of polymer solar cell was raised to 2. 34%.

关 键 词：有机太阳能电池 聚合物给体材料 苯并二噻吩 

分 类 号：TM914.4[电气工程—电力电子与电力传动]