Negative electron affinity mechanism for diamond surfaces

被引:60
作者
Krainsky, IL [1 ]
Asnin, VM [1 ]
机构
[1] NASA, Lewis Res Ctr, Cleveland, OH 44135 USA
关键词
D O I
10.1063/1.121422
中图分类号
O59 [应用物理学];
学科分类号
摘要
The energy distribution of the secondary electrons for chemical vacuum deposited diamond films with negative electron affinity (NEA) was investigated. It was found that while for completely hydrogenated diamond surfaces the negative electron affinity peak in the energy spectrum of the secondary electrons is present for any energy of the primary electrons, for partially hydrogenated diamond surfaces there is a critical energy above which the peak is present in the spectrum. This critical energy increases sharply when hydrogen coverage of the diamond surface diminishes. This effect was explained by the change of the NEA from the true type for the completely hydrogenated surface to the effective type for the partially hydrogenated surfaces.
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页码:2574 / 2576
页数:3
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