Depleted-heterojunction colloidal quantum dot photovoltaics employing low-cost electrical contacts

被引：31

作者：

Debnath, Ratan ^{[1
]}

Greiner, Mark T. ^{[2
]}

Kramer, Illan J. ^{[1
]}

Fischer, Armin ^{[1
]}

Tang, Jiang ^{[2
]}

Barkhouse, D. Aaron R. ^{[1
]}

Wang, Xihua ^{[1
]}

Levina, Larissa ^{[1
]}

Lu, Zheng-Hong ^{[2
,3
]}

Sargent, Edward H. ^{[1
]}

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

[2] Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada

[3] Yunnan Univ, Dept Phys, Kunming 650091, Yunnan, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 02期

关键词：

excitons; III-V semiconductors; indium compounds; nanowires; photoluminescence; semiconductor quantum wires; time resolved spectra; valence bands; SOLAR-CELLS; INFRARED PHOTOVOLTAICS; ELECTRODES;

D O I：

10.1063/1.3463037

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

With an aim to reduce the cost of depleted-heterojunction colloidal quantum dot solar cells, we describe herein a strategy that replaces costly Au with a low-cost Ni-based Ohmic contact. The resultant devices achieve 3.5% Air Mass 1.5 power conversion efficiency. Only by incorporating a 1.2-nm-thick LiF layer between the PbS quantum dot film and Ni, we were able to prevent undesired reactions and degradation at the metal-semiconductor interface. (C) 2010 American Institute of Physics. [doi:10.1063/1.3463037]

引用

页数：3

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