The influence of nitrogen plasma treatment on the lattice vibrational properties of hydrothermally grown ZnO nanorods
The influence of nitrogen plasma treatment on the lattice vibrational properties of hydrothermally grown ZnO nanorods
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DOI：
10.1063/1.2905282
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发表时间：
2008-04
影响因子：
4
通讯作者：
H. Le;S. Tripathy;S. Chua
中科院分区：
文献类型：
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作者：
H. Le;S. Tripathy;S. Chua
在这项研究中，作者研究了热退火和氮等离子体处理相结合的水热生长 ZnO 纳米棒的光学特性。特别是，紫外-可见微拉曼散射已被用来研究氮化镓/蓝宝石模板上生长的 ZnO 纳米棒中氮掺入的影响。由于氮等离子体处理，带边光致发光光谱显示出显着变化。此外，可见拉曼光谱显示等离子体处理的 ZnO 纳米棒的无序激活振动模式强度增强。在这些纳米棒的紫外共振拉曼激发下观察到多个纵向光学（LO）声子。一阶共振 LO 声子线形状拟合与氮引起的晶格无序相关。
In this study, the authors have investigated the optical properties of hydrothermally grown ZnO nanorods subjected to the combination of thermal annealing and nitrogen plasma treatments. In particular, ultraviolet-visible micro-Raman scattering has been used to study the influence of nitrogen incorporation in ZnO nanorods grown on GaN/sapphire templates. The band-edge photoluminescence spectra show significant changes due to nitrogen plasma treatment. In addition, visible Raman spectra show intensity enhancement of the disorder-activated vibrational modes from plasma-treated ZnO nanorods. Multiple longitudinal optical (LO) phonons are observed under ultraviolet resonant Raman excitation from these nanorods. The first-order resonant LO phonon line shape fitting is correlated to the nitrogen-induced lattice disorder.