Material characterization of a β -Ga2O3 crystal

被引：0
|
作者：
Bryushinin, Mikhail A. [1 ]
Sokolov, Igor A. [1 ]
Pisarev, Roman V. [1 ]
Balbashov, Anatoly M. [2 ]
机构：
[1] Ioffe Physical Technical Institute, Polytekhnicheskaya 26, St. Petersburg,194021, Russia
[2] Russia Moscow Power Engineering Institute, Krasnokazarmennaya 14, Moscow,111250, Russia
来源：
Materials Physics and Mechanics | 2016年 / 27卷 / 01期
关键词：
Electric fields - Excited states - Light;
D O I：
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学科分类号：
摘要：
We report the excitation of the non-steady-state photo-electromotive force in a monoclinic gallium oxide crystal. The crystal grown in an excess of oxygen is insulating and very transparent for a visible light, but this, however, does not prevent us from the formation of dynamic space-charge gratings and observation of the photo-EMF signal at λ=532 nm. The induced ac current is studied for the cases of zero external electric fields. The dependencies of the signal amplitude versus the frequency of phase modulation, light intensity, spatial frequency are measured. The photoconductivity and diffusion length of electrons are estimated for the chosen light wavelength. © 2016, Institute of Problems of Mechanical Engineering.
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页码：68 / 73
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