Photoacoustic Spectra of Heavily Co-Doped ZnO Powders

Masaki OKAMOTO; Yoshihiro INOUE; Toshio KAWAHARA; Jun MORIMOTO

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Photoacoustic Spectra of Heavily Co-Doped ZnO Powders

机译：重掺杂ZnO粉的光声光谱

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摘要

Photoacoustic (PA) spectra were measured for heavily Co-doped ZnO powders using a microphone at room temperature. In PA spectra, the PA signal peaks of Co~(2+) and Co~(3+) can be observed with the ZnO band-gap signals. The two PA peaks related to Co ions show the Co valency change induced by the sintering, and depend on the sintering temperature and the Co concentration. For the heavily Co-doped samples, the Co valency conversion occurred at a low sintering temperature. PA spectroscopy has potential for estimating the inner ion state change during the sintering process.

机译：在室温下使用麦克风测量了重掺杂Co的ZnO粉末的光声（PA）光谱。在PA光谱中，可以用ZnO带隙信号观察到Co〜（2+）和Co〜（3+）的PA信号峰。与Co离子有关的两个PA峰显示了烧结引起的Co价变化，并且取决于烧结温度和Co浓度。对于重掺杂Co的样品，Co价转换发生在低烧结温度下。 PA光谱法有潜力估算烧结过程中的内部离子状态变化。

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来源
《Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers》 |2005年第6b期|p.4461-4464|共4页
作者
Masaki OKAMOTO; Yoshihiro INOUE; Toshio KAWAHARA; Jun MORIMOTO;
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作者单位

Department of Materials Science and Engineering, National Defense Academy, Yokosuka, Kanagawa 239-8686, Japan;

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原文格式 PDF
正文语种 eng
中图分类应用物理学;
关键词
Zn_(1-x)Co_xO mixed crystal; photoacoustic spectroscopy; PAS; nonradiative transition; transition metal doping;

机译：Zn_（1-x）Co_xO混合晶体;光声光谱;PAS;无辐射跃迁;过渡金属掺杂;

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Photoacoustic Spectra of Heavily Co-Doped ZnO Powders

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