Ga_2Se_3:Co^(2+)晶体吸收光谱的研究

An Investigation of Absorption Spectra of Ga_2Se_3:Co^(2+) Single Crystals

Ga2Se3是重要的半导体材料,它在光电方面有很大的应用潜力而被广泛研究。本文引入平均共价因子,考虑静电相互作用,立方晶场和旋轨耦合相互作用,利用完全对角化方法对Ga2Se3:Co2+晶体的吸收光谱的精细结构进行了重新计算和识别。结果表明,理论与实验相符,并纠正了Yoon等对此晶体的吸收光谱及其精细结构识别的错误部分。

The Ga_2Se_3 compound is an important semiconducting material and is researched widely for the potential applications in opotelectronic aspects. Introducing average covalent factor N and considering the electrostatic, cubic crystal field interaction and spin-orbit coupling effects, the fine structure of the absorption spectra of Ga_2Se_3:Co^(2+) crystals is recalculated and reassigned by using the complete diagonalizing method. The theoretical results are in good agreement with the experiments of the absorption spectra of the Ga_2Se_3: Co^(2+). The error assigns of the fine structure and the absorption spectra of Ga_2Se_3:Co^(2+)crystals in the document written by Yoon et al are corrected too.