Highly Stable Photoelectrochemical Water Splitting and Hydrogen Generation Using a Double-Band InGaN/GaN Core/Shell Nanowire Photoanode

被引：188

作者：

AlOtaibi, B. ^{[1
]}

Nguyen, H. P. T. ^{[1
]}

Zhao, S. ^{[1
]}

Kibria, M. G. ^{[1
]}

Fan, S. ^{[1
]}

Mi, Z. ^{[1
]}

机构：

[1] McGill Univ, Dept Elect & Comp Engn, Montreal, PQ H3A 0E9, Canada

来源：

NANO LETTERS | 2013年 / 13卷 / 09期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Nanowire; InGaN; photoelectrochemical water splitting; hydrogen; solar fuels; MOLECULAR-BEAM EPITAXY; LIGHT-EMITTING-DIODES; N-TYPE GAN; VISIBLE-LIGHT; FILM ELECTRODES; AQUEOUS WATER; THIN-FILM; OXIDATION; ARRAYS; ENERGY;

D O I：

10.1021/nl402156e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on the first demonstration of stable photoelectrochemical water splitting and hydrogen generation on a double-band photoanode in acidic solution (hydrogen bromide), which is achieved by InGaN/CaN core/shell nanowire arrays grown on Si substrate using catalyst-free molecular beam epitaxy. The nanowires are doped n-type using Si to reduce the surface depletion region and increase current conduction. Relatively high incident-photon-to-current-conversion efficiency (up to similar to 27%) is measured under ultraviolet and visible light irradiation. Under simulated sunlight illumination, steady evolution of molecular hydrogen is further demonstrated.

引用

页码：4356 / 4361

页数：6

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