Optoelectronic properties of β-Fe2O3 hollow nanoparticles

被引：26
|
作者：
Lee, Chang-Woo [1 ]
Lee, Ki-Woo [1 ]
Lee, Jai-Sung [1 ]
机构：
[1] Hanyang Univ, Dept Mat Engn, Ansan 426791, South Korea
来源：
MATERIALS LETTERS | 2008年 / 62卷 / 17-18期
关键词：
hollow nanostructure; nanomaterials; beta-Fe2O3; band gap energy; surfaces; light reflection;
D O I：
10.1016/j.matlet.2008.01.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of hollow structure on the optoelectronic properties of beta-Fe2O3 hollow nanoparticles (HNPs) was determined. Spectrophotometry showed that the optical transmittance of the beta-Fe2O3 HNPs was less than 40% in the visible-light region. This opaqueness was suggested to be an optical characteristic, commonly found in the authors' previous studies of TiO2 and delta-Al2O3 HNPs. In addition, beta-Fe2O3 HNPs had a band gap (1.86 eV) between amorphous (1.73 eV) and polycrystalline (1.97 eV) beta-Fe2O3 thin films, which was a 5-7 nm thick shell that embraced an intermediate volume of the crystal phase, in-between the two thin films. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：2664 / 2666
页数：3
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