First-Principles Electronic Structure of Cu<sup>+</sup> Luminescence Centers in Cu-Doped ZnS

Chin. Phys. Lett.

1998, Vol. 15

Issue (8): 591-593 DOI:

Original Articles

First-Principles Electronic Structure of Cu⁺ Luminescence Centers in Cu-Doped ZnS

ZHANG Zhi-peng;SHEN Yao-wen;HUANG Mei-chun

Department of Physics, Xiamen University, Xiamen 361005

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ZHANG Zhi-peng, SHEN Yao-wen, HUANG Mei-chun 1998 Chin. Phys. Lett. 15 591-593

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Abstract The electronic structures of various Cu⁺ luminescence centers in wurtzite ZnS are studied by using first-principles linear muffin-tin-orbital method combining atomic sphere approximation. The results for ZnS:Cu:Cl and ZnS:Cu:Al show that Cu acceptor states are anomalously deep (beyond 2.7eV above the top of valence band) and located near the bottom of conduction band in these two cases. On the other hand, the results for ZnS:Cu with sulfur vacancies manifest that the Cu⁺ center is an associated center, whose Cu d-like states are situated above the top of valence band.

Keywords: 71.55 -i 61.72.Vv 71.25.Tn

Published: 01 August 1998

PACS:	71.55 -i
	61.72.Vv
	71.25.Tn

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1998/V15/I8/0591

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