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电子学报  2013 

电子倍增型GaAs光阴极实验研究

DOI: 10.3969/j.issn.0372-2112.2013.08.015, PP. 1549-1554

Keywords: 砷化镓,光阴极,雪崩倍增,电子增益,负电子亲和势

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Abstract:

电子倍增型GaAs光阴极是利用雪崩倍增效应的一种新型光阴极组件,通过在常规GaAs光阴极中引入雪崩电子倍增层制备了GaAs光阴极/电子倍增器一体化组件,研究了该组件的热清洗温度、电子增益等性能.对组件热清洗工艺前后的I-V特性进行了对比测试,结果表明,该组件可以承受580℃的热清洗温度,并获得了12.6倍的电子增益;880nm处的探测灵敏度≥3.87mA/w;暗电流密度≤6.79×10-5mA/cm2.

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