Photoelectron emission properties of hydrogen terminated intrinsic diamond

被引:21
作者
Takeuchi, D. [1 ]
Nebel, C. E. [1 ]
Yamasaki, S. [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Diamond Res Ctr, Tsukuba, Ibaraki 3058568, Japan
关键词
D O I
10.1063/1.2188070
中图分类号
O59 [应用物理学];
学科分类号
摘要
Hydrogen terminated intrinsic diamond is characterized using photoelectron emission spectroscopy. Samples have been annealed at temperatures T-a from 200 to 1000 degrees C. The electron emission characteristics can be divided into three regimes: (I) (T-a < 300 degrees C) is governed by surface band bending which allows only excitons to reach the surface with subsequent dissociation. (II) (300 degrees C <= T-a <= 650 degrees C) shows increased electron emission and the surface band bending has been removed. Here, excitons and electrons contribute. (III) (T-a>650 degrees C) additional rise of emission is detected. The spectra are dominated by photon-phonon interactions which are discussed in detail. (C) 2006 American Institute of Physics.
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页数:3
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