Self-assembly monolayers manipulate the power conversion processes in organic photovoltaics

被引：7

作者：

Hu, Ting ^{[2
,3
]}

Lv, Xiaolan ^{[1
]}

Cheng, Xiaofang ^{[1
]}

Huang, Liqiang ^{[1
]}

Zhang, Lifu ^{[1
]}

Zhou, Weihua ^{[1
]}

Jiang, Ping ^{[1
]}

Hu, Lin ^{[4
]}

Zhou, Yinhua ^{[4
]}

Chen, Lie ^{[1
,2
]}

机构：

[1] Nanchang Univ, Coll Chem, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China

[2] Nanchang Univ, Inst Polymers & Energy Chem, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China

[3] Nanchang Univ, Sch Mat Sci & Engn, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China

[4] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Sch Opt & Elect Informat, Wuhan 430074, Hubei, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2019年 / 409卷

基金：

中国国家自然科学基金;

关键词：

Self-assembled monolayers; Dipole moment; Surface defect; Dynamics process; Bimolecular recombination; Trap-based recombination; POLYMER SOLAR-CELLS; DOPED ZINC-OXIDE; SURFACE-PROPERTIES; PHOSPHONIC-ACIDS; WORK FUNCTION; PERFORMANCE; EFFICIENCY; IMPEDANCE; ENERGY; IMPACT;

D O I：

10.1016/j.jpowsour.2018.10.091

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：

Surface modification of zinc oxide (ZnO) plays a crucial role in enhancing the performance of organic photovoltaics (OPVs) due to its structure defect. Herein, methoxyphenylphosphonic acid (MPPA) modifier is introduced for interface engineering to improve the cell performance. The power conversion efficiency (PCE) of 11% has been achieved based on fullerene-free systems together with a breakthrough in current density. We obtain ZnO with reduced surface defect and lower work function after incorporation of MPPA modifier. Moreover, by analyzing dynamics process of solar cells, we discover MPPA modifier promotes the exciton generation, exciton diffusion, exciton dissociation and charge transport with reduced bimolecular recombination and trap-based recombination loss, leading to better power conversion processes.

引用

页码：66 / 75

页数：10

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