Temperature dependence of the optical properties in GaMnN
Temperature dependence of the optical properties in GaMnN
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DOI：
10.1063/1.2203427
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发表时间：
2006-06
影响因子：
3.2
通讯作者：
L. Guo;W. Shen;Yu Zhang
中科院分区：
文献类型：
--
作者：
L. Guo;W. Shen;Yu Zhang
对不同Mn注入剂量的离子注入GaMnN薄膜进行了透射率随温度变化的测量。通过详细的透射光谱分析，我们得到了GaMnN（包括GaN）的吸收系数、带隙、Urbach带尾特性、折射率和消光系数等光学性质的温度效应。建立了两套与温度和光子能量相关的经验公式，不仅统一了文献报道的各种实验数据，而且提供了GaMnN光学性质的实验数据库。此外，我们发现，这些光学性能的Mn注入剂量的依赖关系是密切相关的Mn对晶体结构的影响。
Temperature-dependent transmission measurements are carried out on ion-implanted GaMnN with different Mn-implantation doses. With a detailed procedure developed for analyzing the transmission spectra, we obtain the temperature effects in optical properties of GaMnN (including GaN), such as absorption coefficient, band gap, Urbach band tail characteristics, refractive index, and extinction coefficient. Two sets of temperature- and photon energy-dependent empirical formulas are established, which not only unify the various experimental data reported in the literature, but also provide an experimental database of optical properties in GaMnN. Furthermore, we reveal that the dependence of these optical properties on the Mn-implantation doses is closely related to the impact of Mn on the crystal structure.