Nanostructured hematite thin films produced by spin-coating deposition solution: Application in water splitting

被引：158

作者：

Souza, Flavio L. ^{[1
]}

Lopes, Kirian P. ^{[1
]}

Nascente, Pedro A. P. ^{[2
]}

Leite, Edson R. ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Chem, LIEC CDMDC, BR-13565905 Sao Carlos, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Mat Sci & Engn, PPGCEM, BR-13565905 Sao Carlos, SP, Brazil

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2009年 / 93卷 / 03期

基金：

巴西圣保罗研究基金会;

关键词：

Nanostructure; Thin films; Water splitting; Hydrogen production; POLYMERIC PRECURSOR METHOD; SOLAR HYDROGEN-PRODUCTION; IRON-OXIDE FILMS; FERRIC-OXIDE; PHOTOELECTROCHEMICAL PROPERTIES; SEMICONDUCTOR ELECTRODES; ELECTRICAL-PROPERTIES; ALPHA-FE2O3; FILMS; SPRAY-PYROLYSIS; SINGLE-CRYSTAL;

D O I：

10.1016/j.solmat.2008.11.049

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：

Doped and undoped hematite films for photoelectrochemical hydrogen production were prepared by spin-coating deposition solution (SCDS). To understand the influence of the Si-doping and identify the critical parameters of the proposed SCDS method an extensive characterization was conducted. The Si-doped hematite exhibited higher photocurrent response when compared with undoped films. We have shown that the crystallographic orientation degree of the films appears to be a dominant factor affecting the photocurrent. The performance of our hematite electrodes is well below the maximum theoretical efficiency and the conceivable explanation could be given by the high value of recombination phenomena (electron/hole pair). (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：362 / 368

页数：7

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