ZnGa2Se4单晶光学性质的系统分析

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-05-20 DOI:10.1016/j.cap.2025.05.007

S.G. Asadullayeva , Z.А. Jahangirli , T.G. Naghiyev , A.S. Abiyev

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引用次数: 0

摘要

采用气体输运法生长ZnGa2Se4化合物的单晶。对其光致发光（PL）、光电导率（PC）性能进行了实验研究。在宽温度范围内（5 ~ 300 K）的PL发射测量表明，随着温度的降低，PL发射峰的强度增加。同时，通过降低温度，在PL最大值处观察到从536 nm （2.31 eV）到530 nm （2.34 eV）的蓝移。此外，还首次观察到在1600 nm （0.77 eV）处最大的强PL峰，并伴有从受体能级到价带的电子跃迁。DFT计算证实，在2.83 eV处PL激发（PLE）峰值与VBM到CBM的电子跃迁有关。所得实验数据与ZnGa2Se4单晶的从头计算结果吻合较好。总的来说，实验结果得到了从头算的验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Systematic analysis of the optical properties of ZnGa2Se4 single crystal

The single crystals of ZnGa₂Se₄ compound were grown by gas transportation method. Photoluminescence (PL), photoconductivity (PC) properties was experimentally investigated. PL emission measurements in wide range of temperature (5–300 K) shown that the intensity of PL emission peak increase with decreasing the temperature. Simultaneously, blue shifts from 536 nm (2.31 eV) to 530 nm (2.34 eV) is observed at PL maxima by decreasing the temperature. Moreover, a strong PL peak with maximum at 1600 nm (0.77 eV) associated with an electronic transition from the acceptor level to the valence band is observed for the first time. The DFT calculations confirmed that PL excitation (PLE) peak at 2.83 eV can be associated with the electronic transition from the VBM to the CBM. Obtained experimental data and ab initio calculations for ZnGa₂Se₄ single crystals show good agreement. In general, experimental results were confirmed by ab-initio calculations.

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.