超离子Ag6PS5I晶体基本吸收边的温度行为

IF 3.9 4区物理与天体物理 0 OPTICS

Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI:10.3116/16091833/22/4/216/2021

I. Studenyak, M. Pop, I. Shender, A. Pogodin, M. Kranjčec

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引用次数: 7

摘要

。采用垂直区结晶法从溶液熔体中生长出Ag - 6ps5i单晶。用光谱椭偏技术测量的ag6ps5i折射率色散用已知的Wemple - DiDomenico关系描述。在77 ~ 300 K的温度范围内，研究了ag6ps5i晶体的基本吸收边。在爱因斯坦模型的框架下，分析了光学赝隙和厄巴赫能的温度依赖性。确定了导致基本吸收边厄巴赫行为的电子-声子相互作用的参数。研究了温度和结构紊乱对ag6ps5i光吸收的影响。

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Temperature behaviour of fundamental absorption edge in superionic Ag6PS5I crystals

. Ag 6 PS 5 I single crystals are grown from solution–melt by means of a vertical zone crystallization method. Dispersion of the refractive index of Ag 6 PS 5 I measured with a spectral ellipsometry technique is described by a known Wemple– DiDomenico relation. The fundamental absorption edge for the Ag 6 PS 5 I crystals is studied in the temperature range 77–300 K. The temperature dependences of the optical pseudogap and the Urbach energy are analyzed in the framework of Einstein model. The parameters of electron–phonon interaction, which results in the Urbach behaviour of the fundamental absorption edge, are determined. The influence of temperature and structural disorderings on the optical absorption in Ag 6 PS 5 I is studied.

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来源期刊

Ukrainian Journal of Physical Optics OPTICS-

CiteScore

9.90

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： “Ukrainian Journal of Physical Optics” contains original and review articles in the fields of crystal optics, piezo-, electro-, magneto- and acoustooptics, optical properties of solids and liquids in the course of phase transitions, nonlinear optics, holography, singular optics, laser physics, spectroscopy, biooptics, physical principles of operation of optoelectronic devices and systems, which need rapid publication. The journal was founded in 2000 by the Institute of Physical Optics of the Ministry of Education and Science of Ukraine.