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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41398

Title: Au nanoparticle modified GaN photoelectrode for photoelectrochemical hydrogen generation
Authors: Wen-Hsun Tu
Yu-Kuei Hsu
Cheng-Hsiung Yen
Chih-I Wu
Jih-Shang Hwang
Li-Chyong Chen
Kuei-Hsien Chen
Contributors: 國立臺灣海洋大學:光電科學研究所
Keywords: Hydrogen generation
Photoelectrochemistry
Water splitting
GaN
Gold nanoparticle
Date: 2011
Issue Date: 2017-02-15T03:33:32Z
Publisher: Electrochemistry Communications
Abstract: Abstract: Systematic investigations of photoelectrochemical behavior between Au nano-particle modified n- and p-GaN were reported in this study. With Au nanoparticles sputtered on the surface, strong Fermi level pinning caused by the creation of metal induced gap states alters the behavior of electrolyte/GaN interface. Under illumination, the photocurrent of p-GaN at zero bias exhibited 25 times enhancement, whereas that of n-GaN showed slight decrease. The overall hydrogen generation efficiency of p-GaN in HCl solution was increased from 0.02% to around 0.59%. The enhancement can be attributed to the different energy shift of the surface band edge at the interface according to the doping of GaN.
Relation: 13(6)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41398
Appears in Collections:[光電科學研究所] 期刊論文

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