Boosting Organic Photovoltaic Performance Over 11% Efficiency With Photoconductive Fullerene Interfacial Modifier

被引：55
作者：
Huang, Jiang [1 ]
Zhang, Xiaohua [1 ]
Zheng, Ding [1 ]
Yan, Kangrong [2 ]
Li, Chang-Zhi [2 ]
Yu, Junsheng [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China
[2] Zhejiang Univ, MOE Key Lab Macromol Synth & Functionalizat, State Key Lab Silicon Mat, Dept Polymer Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
来源：
SOLAR RRL | 2017年 / 1卷 / 01期
基金：
中国国家自然科学基金;
关键词：
POLYMER SOLAR-CELLS; HIGHLY EFFICIENT; OXIDE NANOPARTICLES; CATHODE; LAYER;
D O I：
10.1002/solr.201600008
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A interfacial modifier, [5,6]-open azafulleroid (OPCBM) is utilized to engineer the organics-metal oxide heterojunction of inverted organic photovoltaics (OPVs). Mechanistic studies disclose that the OPCBM treatment not only passivates the metal oxide surface defects, but also improves energetic alignment and conductivity of interlayer due to the excited charge transfer characteristics from azafulleroid to ZnOx. With the assistance of p-orbital hybridization from fullerene to the beneath ZnOx (through anchoring group), the electronic coupling and charge transfer from organics to metal oxide are effectively enhanced through the mediation of OPCBM modifier. It enables the overall internal quantum efficiency (IQE) approaching 100% and fill factor of 0.77 for the PTB7-Th:PC71BM based inverted OPVs, with the best PCE as high as 11.3%.
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页数：8
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