Identification of photoluminescence centers in oxygen- and erbium-doped a-Si(H) films
Tóm tắt
It has been shown that [Er-O] clusters play the role of photoluminescence centers in films of amorphous hydrogenated silicon a-Si(H) doped with oxygen and erbium. The local symmetry of Er3+ ions in clusters is the same as that in Er2O3. A decrease in the cluster size and an increase in the particle density result in the enhancement of the photoluminescence intensity of a-Si(H): Er at a wavelength of 1.54 μm.
Tài liệu tham khảo
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