非均匀高掺杂对透射式光电阴极光电发射性能影响研究
Infrared Technology(2014)
Abstract
研究分析了高掺杂浓度下幂函数掺杂阴极发射层内部形成恒定电场情况,探讨了光电阴极发射层材料内部形成恒定电场对提高透射式光电阴极量子效率中有效电子输运长度、表面电子逸出几率等参量的影响.结合掺杂浓度不同带来的光电子散射问题,对比讨论了传统的均匀掺杂、指数掺杂、幂函数掺杂情况下发射层材料量子效率情况.
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Key words
transmissive photocathode,photoemission performance,non-uniform,high-doping
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