Blueshifts in the ultraviolet absorption spectra of cerium oxide nanocrystallites

被引：101

作者：

Tsunekawa, S ^{[1
]}

Wang, JT

Kawazoe, Y

Kasuya, A

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[3] Tohoku Univ, Interdisciplinary Res Ctr, Sendai, Miyagi 9808578, Japan

[4] Tohoku Univ, Adv Mat Lab, IMR, Sendai, Miyagi 980, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2003年 / 94卷 / 05期

关键词：

D O I：

10.1063/1.1600520

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Blueshifts in the ultraviolet absorption spectra have been observed in cerium oxide nanocrystallites. The mechanism of the absorption is a charge-transfer optical transition. The relationships among the blueshift, valence state of cerium ions, and the particle size are formulated. The blueshifts are well explained for diameters down to less than a few nanometers by the change in the electronic band structure. (C) 2003 American Institute of Physics.

引用

页码：3654 / 3656

页数：3

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