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Temperature-dependent photoluminescence of ZnO layers grown on 6H-SiC substrates

Ashrafi, A. B. M. A.; Binh, N. T.; Zhang, B. P.; Segawa, Y.


Temperature-dependent photoluminescence(PL) of ZnO layers grown on 6H-SiC substrates has been described. The PLspectra were dominated by free exciton (FX) emission throughout the whole temperature range, which reflects shallow nonradiative centers in high crystalline ZnO layers. The temperature-dependent exciton peak energy as well as intensity quenching due to overlapping of FX and D⁰X (donor-bound exciton) bands has been addressed with an inclusion of donor-bound exciton-like defects. The...[Show more]

CollectionsANU Research Publications
Date published: 2004-06-15
Type: Journal article
Source: Journal of Applied Physics
DOI: 10.1063/1.1649451


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