欢迎访问《人工晶体学报》官方网站,今天是 分享到:

人工晶体学报 ›› 2025, Vol. 54 ›› Issue (8): 1410-1416.DOI: 10.16553/j.cnki.issn1000-985x.2025.0043

• 研究论文 • 上一篇    下一篇

Fe掺杂GaN晶体低温光致发光谱的偏振及温度依赖性

肖捷翔1,2(), 杨超普2,3, 王建峰2,4, 张育民2,4, 易觉民2(), 徐科1,2,4()   

  1. 1.上海科技大学物质科学与技术学院,上海 201210
    2.中国科学院苏州纳米技术与纳米仿生研究所,苏州 215123
    3.商洛学院化学工程与现代材料学院,商洛 726000
    4.苏州纳维科技有限公司,苏州 215123
  • 收稿日期:2025-03-05 出版日期:2025-08-20 发布日期:2025-09-01
  • 通信作者: 易觉民,博士,副研究员。E-mail:jmyi2020@sinano.ac.cn;徐 科,博士,研究员。E-mail:kxu2006@sinano.ac.cn
  • 作者简介:肖捷翔(1997—),男,江西省人,硕士研究生。E-mail:jxxiao2023@sinano.ac.cn
  • 基金资助:
    国家重点研发计划(2022YFB3605200);国家自然科学基金(62174175);商洛学院博士启动基金项目(21SKY127);商洛学院重点培育项目(22KYPY03)

Polarization and Temperature Dependence of Low-Temperature Photoluminescence Spectra in Fe-Doped GaN Crystals

XIAO Jiexiang1,2(), YANG Chaopu2,3, WANG Jianfeng2,4, ZHANG Yumin2,4, YI Juemin2(), XU Ke1,2,4()   

  1. 1.School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China
    2.Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China
    3.College of Chemical Engineering and Modern Materials,Shangluo University,Shangluo 726000,China
    4.Suzhou Nanowin Science and Technology Co. ,Ltd. ,Suzhou 215123,China
  • Received:2025-03-05 Online:2025-08-20 Published:2025-09-01

摘要: 本文利用低温光致发光光谱研究了Fe掺杂GaN晶体非极性m面的近带边DBE 1-LO、DBE2e 1-LO、DBE 2-LO、DBE2e 2-LO、DAP的偏振发光特性,结果表明五个峰均表现为偏振各向异性,且峰强度随着偏振角度的增加而增强,低温下Fe掺杂GaN单晶近带边发光峰均为部分偏振光,并表现出不同的偏振特性。其中激子峰的线偏振度远大于声子伴线,其线偏振度为35.1%,偏振特性显著,其线偏振度分别是一级声子伴线、二级声子伴线的6.22和16.56倍。随着Fe掺杂浓度的增大,Fe3+相关峰位均出现蓝移,峰位受温度影响不大。本研究有助于探究Fe掺杂GaN晶体发光机理并增强其在相关偏振光电器件中的应用。

关键词: 氮化镓; 光致发光; Fe掺杂; 光学性质; 偏振特性; 掺杂浓度

Abstract: This article uses low-temperature photoluminescence spectra to study the polarization luminescence characteristics of Fe-doped GaN crystal non-polar m-plane near band edge DBE 1-LO, DBE2e 1-LO, DBE 2-LO, DBE2e 2-LO, DAP. The results show that five peaks on the surface all exhibit polarization anisotropy, and the peak intensity increases with the polarization angle. At low temperatures, the near band edge emission peaks of Fe-doped GaN single crystals are all partially polarized light and exhibit different polarization characteristics. The linear polarization degree of the exciton peak is much greater than that of the phonon companion line, with a linear polarization degree of 35.1% and significant polarization characteristics. Its linear polarization degree is 6.22 and 16.56 times that of the first-order and second-order phonon companion lines, respectively. As the Fe doping concentration increases, the peak positions related to Fe3+ all show a blue shift, and the peak positions are not significantly affected by temperature. This study contributes to exploring the luminescence mechanism of Fe-doped GaN crystal and enhancing its application in related polarized optoelectronic devices.

Key words: GaN; photoluminescence; Fe-doping; optical property; polarization characteristic; doping concentration

中图分类号: