Achieving 10.5% efficiency for inverted polymer solar cells by modifying the ZnO cathode interlayer with phenols

被引：44

作者：

Fu, Ping ^{[1
]}

Guo, Xin ^{[1
]}

Zhang, Bin ^{[2
]}

Chen, Tao ^{[1
]}

Qin, Wei ^{[1
]}

Ye, Yun ^{[1
]}

Hou, Jianhui ^{[2
]}

Zhang, Jian ^{[3
]}

Li, Can ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[2] Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China

[3] Guilin Univ Elect Technol, Mat Sci & Engn, 1 Jinji Rd, Guilin 541004, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2016年 / 4卷 / 43期

基金：

中国国家自然科学基金;

关键词：

ORGANIC PHOTOVOLTAIC CELLS; HIGHLY EFFICIENT; HIGH-PERFORMANCE; CONJUGATED POLYELECTROLYTE; RECENT PROGRESS; LAYER; OXIDE; MORPHOLOGY; DEVICES;

D O I：

10.1039/c6ta07105h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Interfacial engineering is crucial to improve photovoltaic performance. In this work, a single-junction inverted polymer solar cell (IPSC) is fabricated where the ZnO cathode interlayer (CIL) is modified with phenols (both on the ZnO surface and in blend). By using this strategy, power conversion efficiency (PCE) can be remarkably enhanced to 10.5% with PTB7-Th:PC71BM as the active layer, which is an similar to 22% increase compared to that of a control device (8.59%) without modification. Meanwhile, the long-term stability of the modified device is also improved relevant to the control one. The improvement of device performance and stability was attributed to the better contact with the active layer, decreased work function, increased electron transport and reduced series resistance, induced by the dehydration between phenols and hydroxyl groups on the ZnO surface certified by in situ Fourier transform infrared spectroscopy.

引用

页码：16824 / 16829

页数：6

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