Additive-Free Organic Solar Cells with Power Conversion Efficiency over 10%

被引：36

作者：

Li, Hui ^{[1
]}

He, Dan ^{[2
]}

Mao, Peng ^{[1
]}

Wei, Yuanzhi ^{[1
]}

Ding, Liming ^{[2
,3
]}

Wang, Jizheng ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Natl Ctr Nanosci & Technol, CAS Key Lab Nanosyst & Hierarch Fabricat, CAS Ctr Excellence Nanosci, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2017年 / 7卷 / 13期

基金：

中国国家自然科学基金;

关键词：

POLYMER PHOTOVOLTAIC CELLS; BANDGAP POLYMER; PHASE-SEPARATION; BUILDING-BLOCK; PERFORMANCE; MORPHOLOGY; ENHANCEMENT; ACCEPTOR; NETWORK;

D O I：

10.1002/aenm.201602663

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：

Nowadays, solvent additives are widely used in organic solar cells (OSCs) to tune the nano-morphology of the active blend film and enhance the device performance. With their help, power conversion efficiencies (PCEs) of OSCs have recently stepped over 10%. However, residual additive in the device can induce undesirable morphological change and also accelerate photo-oxidation degradation of the active blend film. Thereby, their involvements are actually unfavorable for practical applications. Here, a donor material PThBDTP is employed, and PThBDTP:PC71BM based OSCs are fabricated. A PCE of over 10% is achieved without using any additives and film post-treatments. The device displays a high open-circuit voltage of 0.977 V, a large short-circuit current density of 13.49 mA cm(-2), and a high fill factor of 76.3%. These results represent an important step towards developing high-efficiency additive-free OSCs.

引用

页数：6

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