NATURE OF THE NONLINEARITY OF THE LUX-AMPERE CHARACTERISTICS OF METAL-SEMICONDUCTOR-METAL STRUCTURES WITH SEMIINSULATING CADMIUM TELLURIDE CRYSTALS.

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作者
Kasherininov, P.G.
Matyukhin, D.G.
Slavdkova, V.A.
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Soviet physics. Semiconductors | 1980年 / 14卷 / 07期
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SEMICONDUCTOR DEVICES;
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摘要
Nonlinear lux-ampere characteristics at high illumination intensities are predicted for photodetectors with noninjecting contacts in the form of metal-semiconductor-metal (MSM) structures made of semiinsulating compensated crystals. This nonlinearity is caused by a redistribution of electric fields during illumination, due to the formation of space polarization charges. It is found that additional infrared illumination usually enhances these effects and reduces the photocurrent (infrared quenching). A redistribution of electric fields during illumination of MSM structures with semiinsulating cadmium telluride crystals was observed by means of the electrooptic effect. The experimental results confirmed the theoretical predictions.
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页码:763 / 766
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