Tuning of a graphene-electrode work function to enhance the efficiency of organic bulk heterojunction photovoltaic cells with an inverted structure

被引：83

作者：

Jo, Gunho ^{[1
]}

Na, Seok-In ^{[2
]}

Oh, Seung-Hwan ^{[3
]}

Lee, Sangchul ^{[1
]}

Kim, Tae-Soo ^{[1
]}

Wang, Gunuk ^{[1
]}

Choe, Minhyeok ^{[1
]}

Park, Woojin ^{[1
]}

Yoon, Jongwon ^{[1
]}

Kim, Dong-Yu ^{[1
]}

Kahng, Yung Ho ^{[1
,3
]}

Lee, Takhee ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Dept Nanobio Mat & Elect, Dept Mat Sci & Engn, Kwangju 500712, South Korea

[2] Korea Inst Sci & Technol, Inst Adv Composite Mat, Jeollabuk Do 565902, South Korea

[3] Gwangju Inst Sci & Technol, Res Inst Solar & Sustainable Energies, Kwangju 500712, South Korea

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 21期

关键词：

POLYMER SOLAR-CELLS; HIGH-PERFORMANCE; TRANSPARENT; DEPOSITION; FILMS; OXIDE;

D O I：

10.1063/1.3514551

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate the fabrication of inverted-structure organic solar cells (OSCs) with graphene cathodes. The graphene film used in this work was work-function-engineered with an interfacial dipole layer to reduce the work function of graphene, which resulted in an increase in the built-in potential and enhancement of the charge extraction, thereby enhancing the overall device performance. Our demonstration of inverted-structure OSCs with work-function-engineering of graphene electrodes will foster the fabrication of more advanced structure OSCs with higher efficiency. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514551]

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