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Refractive Parameters and Band Energy Structure of K 2 SO 4 Crystals Doped with Copper
Journal of Applied Spectroscopy ( IF 0.8 ) Pub Date : 2020-04-01 , DOI: 10.1007/s10812-020-00975-7
V. Yo. Stadnyk , R. B. Matviiv , M. Ya. Rudysh , R. S. Brezvin , P. A. Shchepanskyi , B. V. Andrievskii

Potassium sulfate crystals with a copper content of 1.7% were synthesized, and the dependence of their refractive indices ni(λ) and birefringence Δni(λ) on their dispersion was studied. It was found that the dispersion ni(λ) in the spectral range of 300–700 nm is normal while introduction of the impurity leads to a decrease of ni and of the electron polarizability. The band energy structure of potassium sulfate crystal doped with 1.7% of Cu2+ was calculated. Introduction of the impurity leads to a decrease in the forbidden band width (Eg = 5.3 and 4.9 eV for pure and doped crystals respectively). The optical functions of doped potassium sulfate crystals were calculated.

中文翻译:

铜掺杂K 2 SO 4晶体的折射率和能带结构

用1.7%的铜含量硫酸钾晶体合成,并且它们的折射率的依赖性Ñλ)和双折射的Δnλ它们的分散体)进行了研究。发现在300–700 nm光谱范围内的色散n iλ)是正常的,而引入杂质会导致ni和电子极化率降低。计算了1.7%的Cu 2+掺杂硫酸钾晶体的能带结构。引入杂质会导致禁带宽度(E g对于纯晶体和掺杂晶体,分别为5.3和4.9 eV)。计算了掺杂硫酸钾晶体的光学功能。
更新日期:2020-04-01
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