Photoelectrolysis of water using thin copper gallium diselenide electrodes

被引：93

作者：

Marsen, Bjorn ^{[1
]}

Cole, Brian ^{[1
]}

Miller, Eric L. ^{[1
]}

机构：

[1] Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Hawaii Nat Energy Inst, Honolulu, HI 96822 USA

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2008年 / 92卷 / 09期

关键词：

CuGaSe2; copper chalcopyrite films; photoelectrochemical hydrogen production; hydrogen evolution reaction;

D O I：

10.1016/j.solmat.2008.03.009

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Thin CuGaSe2 films were deposited by Vacuum co-evaporation and characterized for their structure, properties and performance as hydrogen-evolving photoelectrodes. The 0.9 mu m thick films were nearly stoichiometric with very slight copper deficiency and showed polycrystalline structure with grain sizes of tens of nanometers. Ail electrode based on such a film was demonstrated operating with outdoor 1-sun photocurrent of up to 13 mA/cm(2). Spectral response data show significant incident-photon-to-current efficiency throughout the visible spectrum, peaking at 63% at 640nm. Photocurrent Output under simulated 1-sun Air Mass 1.5 light was stable over 4 h. Unassisted water-splitting is not possible due to high band edge positions, but operation in tandem Configuration With a Suitable bottom junction is feasible. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1054 / 1058

页数：5

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