Highly efficient inverted organic solar cells using amino acid modified indium tin oxide as cathode

被引:29
作者
Li, Aiyuan [1 ]
Nie, Riming [1 ]
Deng, Xianyu [1 ]
Wei, Huaixin [2 ]
Zheng, Shizhao [3 ]
Li, Yanqing [2 ]
Tang, Jianxin [2 ]
Wong, King-Young [3 ]
机构
[1] Harbin Inst Technol, Shenzhen Grad Sch, Res Ctr Adv Funct Mat & Devices, Shenzhen Key Lab Adv Mat,Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China
[2] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China
[3] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
关键词
LAYER;
D O I
10.1063/1.4870096
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this paper, we report that highly efficient inverted organic solar cells were achieved by modifying the surface of indium tin oxide (ITO) using an amino acid, Serine (Ser). With the modification of the ITO surface, device efficiency was significantly enhanced from 0.63% to 4.17%, accompanied with an open circuit voltage (Voc) that was enhanced from 0.30V to 0.55 V. Ultraviolet and X-ray photoelectron spectroscopy studies indicate that the work function reduction induced by the amino acid modification resulting in the decreased barrier height at the ITO/organic interface played a crucial role in the enhanced performances. (C) 2014 AIP Publishing LLC.
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页数:4
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