Is it effective to harvest visible light by decreasing the band gap of photocatalytic materials?

被引：6

作者：

Fu, Ning ^{[1
]}

Tang, Xinhu ^{[1
]}

Li, Dongyang ^{[1
]}

机构：

[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 09期

基金：

加拿大自然科学与工程研究理事会;

关键词：

catalysis; energy gap; photochemistry; photoconductivity; semiconductor nanotubes; ultraviolet spectra; visible spectra; wide band gap semiconductors; work function; TIO2; NANOTUBE-ARRAY; TITANIA NANOTUBES; FABRICATION;

D O I：

10.1063/1.3690052

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In situ variations in the electron work function and photo-current of TiO2 nanotubes demonstrate that long-wavelength illumination only has a minor effect on the excitation of electrons in the nanotubes after being exposed to short-wavelength light or when the short-wavelength light coexisted, indicating that the solar spectrum may not be utilized as efficiently as expected by extending the absorption spectrum of the photocatalytic material to visible light range with decreased band gaps. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3690052]

引用

页数：4

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