11.4% Efficiency non-fullerene polymer solar cells with trialkylsilyl substituted 2D-conjugated polymer as donor

被引：936

作者：

Bin, Haijun ^{[1
,2
]}

Gao, Liang ^{[1
,2
]}

Zhang, Zhi-Guo ^{[1
]}

Yang, Yankang ^{[1
,2
]}

Zhang, Yindong ^{[3
,4
,5
]}

Zhang, Chunfeng ^{[3
,4
,5
]}

Chen, Shanshan ^{[6
]}

Xue, Lingwei ^{[1
]}

Yang, Changduk ^{[6
]}

Xiao, Min ^{[3
,4
,5
]}

Li, Yongfang ^{[1
,2
,7
]}

机构：

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

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

[3] Nanjing Univ, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[4] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[5] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

[6] Ulsan Natl Inst Sci & Technol, Sch Energy & Chem Engn, Dept Energy Engn, Low Dimens Carbon Mat Ctr, Ulsan 689798, South Korea

[7] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, State & Local Joint Engn Lab Novel Funct Polymer, Suzhou 215123, Jiangsu, Peoples R China

来源：

NATURE COMMUNICATIONS | 2016年 / 7卷

关键词：

POWER CONVERSION EFFICIENCY; ORGANIC PHOTOVOLTAICS; CONJUGATED POLYMERS; ELECTRON-ACCEPTOR; ENERGY-LOSS; ABSORPTION; COPOLYMERS; MOBILITY; DESIGN; FIELD;

D O I：

10.1038/ncomms13651

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Simutaneously high open circuit voltage and high short circuit current density is a big challenge for achieving high efficiency polymer solar cells due to the excitonic nature of organic semdonductors. Herein, we developed a trialkylsilyl substituted 2D-conjugated polymer with the highest occupied molecular orbital level down-shifted by Si-C bond interaction. The polymer solar cells obtained by pairing this polymer with a non-fullerene acceptor demonstrated a high power conversion efficiency of 11.41% with both high open circuit voltage of 0.94 V and high short circuit current density of 17.32 mA cm(-2) benefitted from the complementary absorption of the donor and acceptor, and the high hole transfer efficiency from acceptor to donor although the highest occupied molecular orbital level difference between the donor and acceptor is only 0.11 eV. The results indicate that the alkylsilyl substitution is an effective way in designing high performance conjugated polymer photovoltaic materials.

引用

页数：11

共 58 条

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