红外与毫米波学报, 2017, 36 (6): 646, 网络出版: 2018-01-04  

电纺丝方法制备GaN:Eu2+纳米纤维与发光特性

Preparation and characterization of Eu2+-doped GaN luminescent nanofibers by electrospinning method
作者单位
1 中国科学院半导体研究所 集成光电联合国家重点实验室, 北京 100083
2 桂林电子科技大学 广西精密导航技术与应用重点实验室, 广西 桂林 541004
3 天津工业大学 天津市光电检测技术与系统重点实验室, 天津 300387
摘要
通过结合静电纺丝和氨化技术方法合成了Eu2+掺杂的GaN(GaN:Eu2+)纳米纤维.SEM和TEM图像显示纳米纤维由尺寸均匀分布的GaN纳米颗粒组成.XRD测试结果表明, GaN:Eu2+样品主要为六方相GaN(h-GaN), 其平均粒径为7.3 nm.进一步的拉曼测试结果显示出现了两个额外的GaN拉曼位移, 波数分别位于252和422 cm-1.室温光致发光谱表明GaN基质中的Eu2+在407 nm处产生了强烈的特征蓝色发光峰.
Abstract
Eu2+-doped GaN (GaN:Eu2+) nanofibers were synthesized by a facile approach that combined electrospinning and ammonification techniques. SEM and TEM images revealed that the nanofibers consist of GaN nanoparticles with uniform size. XRD result showed that the GaN:Eu2+ sample predominantly exhibited the hexagonal phase of GaN (h-GaN) and the average grain size was evaluated to be 7.3 nm. Further Raman characterization showed that two extra GaN Raman shifts with the peaks of 252 and 422 cm-1 were observed. As was expected, characteristic strong blue emission from Eu2+ ions doped in GaN matrix was observed at 407 nm in the photoluminescence spectrum.

陈宇, 魏学成, 刘宏伟. 电纺丝方法制备GaN:Eu2+纳米纤维与发光特性[J]. 红外与毫米波学报, 2017, 36(6): 646. CHEN Yu, WEI Xue-Cheng, LIU Hong-Wei. Preparation and characterization of Eu2+-doped GaN luminescent nanofibers by electrospinning method[J]. Journal of Infrared and Millimeter Waves, 2017, 36(6): 646.

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