电纺丝方法制备GaN:Eu^(2+)纳米纤维与发光特性（英文）

Preparation and characterization of Eu^(2+)-doped GaN luminescent nanofibers by electrospinning method

通过结合静电纺丝和氨化技术方法合成了Eu^(2+)掺杂的GaN(GaN:Eu^(2+))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:Eu^(2+)样品主要为六方相GaN(hGaN),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Eu^(2+)在407

Eu^2＋-doped GaN（GaN： Eu^2＋） 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： Eu^2＋ 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 Eu^2＋ ions doped in GaN matrix was observed at 407 nm in the photoluminescence spectrum.