人工晶体学报2025，Vol.54Issue(8)：1410-1416,7.DOI:10.16553/j.cnki.issn1000-985x.2025.0043
Fe掺杂GaN晶体低温光致发光谱的偏振及温度依赖性
Polarization and Temperature Dependence of Low-Temperature Photoluminescence Spectra in Fe-Doped GaN Crystals
摘要
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.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Key words
GaN/photoluminescence/Fe-doping/optical property/polarization characteristic/doping concentration分类
数理科学引用本文复制引用
肖捷翔,杨超普,王建峰,张育民,易觉民,徐科..Fe掺杂GaN晶体低温光致发光谱的偏振及温度依赖性[J].人工晶体学报,2025,54(8):1410-1416,7.基金项目
国家重点研发计划(2022YFB3605200) （2022YFB3605200）
国家自然科学基金(62174175) （62174175）
商洛学院博士启动基金项目(21SKY127) （21SKY127）
商洛学院重点培育项目(22KYPY03) （22KYPY03）
