TY - JOUR
T1 - Photoluminescence analysis of Cd1-xZnxTe single crystals annealed by a two-step method
AU - Yang, Ge
AU - Jie, Wanqi
PY - 2006/9/4
Y1 - 2006/9/4
N2 - Cd1-xZnxTe (CZT) single crystals were annealed by a two-step method, including a vapor-environment step and a liquid-environment step in sequence. Photoluminescence spectra were used to investigate the effects of annealing on the properties of CZT. After annealing the full width at half maximum of the donor-bound exciton (D0,X) peak was reduced, and the free-exciton emission was weakened. Meanwhile, the intensity of the donor-acceptor pair peak was greatly decreased. In addition, the deep defect-related emission band Dcomplex disappeared after the annealing, which was distinct for as-grown CZT wafers. The investigation confirms that the two-step annealing can compensate for cadmium vacancies and possibly reduce the impurities from CZT wafers.
AB - Cd1-xZnxTe (CZT) single crystals were annealed by a two-step method, including a vapor-environment step and a liquid-environment step in sequence. Photoluminescence spectra were used to investigate the effects of annealing on the properties of CZT. After annealing the full width at half maximum of the donor-bound exciton (D0,X) peak was reduced, and the free-exciton emission was weakened. Meanwhile, the intensity of the donor-acceptor pair peak was greatly decreased. In addition, the deep defect-related emission band Dcomplex disappeared after the annealing, which was distinct for as-grown CZT wafers. The investigation confirms that the two-step annealing can compensate for cadmium vacancies and possibly reduce the impurities from CZT wafers.
KW - A1. Defects
KW - A1. Impurities
KW - B1. Semiconducting II-VI materials
UR - http://www.scopus.com/inward/record.url?scp=33947116353&partnerID=8YFLogxK
U2 - 10.1016/j.jcrysgro.2006.06.016
DO - 10.1016/j.jcrysgro.2006.06.016
M3 - 文章
AN - SCOPUS:33947116353
SN - 0022-0248
VL - 294
SP - 250
EP - 253
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 2
ER -