Deep/shallow levels in arsenic-doped HgCdTe determined by modulated photoluminescence spectra
被引:31
作者:
Yue, Fangyu
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机构:
E China Normal Univ, Minist Educ, Lab Polar Mat & Devices, Shanghai 200241, Peoples R China
Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R ChinaE China Normal Univ, Minist Educ, Lab Polar Mat & Devices, Shanghai 200241, Peoples R China
Yue, Fangyu
[1
,2
]
Wu, Jun
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机构:
Chinese Acad Sci, Shanghai Inst Tech Phys, Res Ctr Adv Mat & Devices, Shanghai 200083, Peoples R ChinaE China Normal Univ, Minist Educ, Lab Polar Mat & Devices, Shanghai 200241, Peoples R China
Wu, Jun
[3
]
Chu, Junhao
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机构:
E China Normal Univ, Minist Educ, Lab Polar Mat & Devices, Shanghai 200241, Peoples R China
Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R ChinaE China Normal Univ, Minist Educ, Lab Polar Mat & Devices, Shanghai 200241, Peoples R China
Chu, Junhao
[1
,2
]
机构:
[1] E China Normal Univ, Minist Educ, Lab Polar Mat & Devices, Shanghai 200241, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China
[3] Chinese Acad Sci, Shanghai Inst Tech Phys, Res Ctr Adv Mat & Devices, Shanghai 200083, Peoples R China
The modulated photoluminescence spectra have been performed on as-grown and in situ annealed arsenic-doped Hg(1-x)Cd(x)Te grown by molecular beam epitaxy. Besides the discussions about shallow levels including V(Hg), As(Hg), V(Hg)-As(Hg) complex, and Te(Hg), two deep levels have been observed in as-grown with an ionization energy of similar to 77.0 and similar to 95.0 meV, respectively, which can be completely eliminated by annealing and temporarily ascribed to As-related clusters or interstitials. (C) 2008 American Institute of Physics.