Photoluminescence from GaN nanopowder: The size effect associated with the surface-to-volume ratio
Photoluminescence from GaN nanopowder: The size effect associated with the surface-to-volume ratio
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GaN 纳米粉末的光致发光：与表面积与体积比相关的尺寸效应
DOI：
10.1063/1.2199489
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发表时间：
2006
影响因子：
4
通讯作者：
W. Stręk
中科院分区：
文献类型：
--
作者：
R. Kudrawiec;M. Nyk;M. Syperek;A. Podhorodecki;J. Misiewicz;W. Stręk
采用燃烧法制备了平均粒径在100 ~ 300 nm的GaN纳米粉体，并对其进行了光致发光（PL）研究。观察到GaN带隙相关的PL谱带位于3.4eV处，表面相关的PL谱带位于2.0eV和2.8eV处。观察到的PL带之间的相对强度的变化有利于表面相关的PL带的晶粒尺寸的减小。这种现象归因于表面积与体积比的变化。
Nanosized GaN powder with the average grain size changing from ∼10to∼30nm has been obtained by combustion method with some modifications and its optical properties have been investigated by photoluminescence (PL). The GaN band-gap-related PL band at ∼3.4eV and surface-related PL bands centered at ∼2.0 and ∼2.8eV have been observed for this powder. The relative intensities between observed PL bands change in favor of the surface-related PL band with the decrease of the grain size. This phenomenon has been attributed to the change in the surface-to-volume ratio.
金属有机化学气相沉积生长堆叠式GaN自组装量子点的形成及光学性能
DOI：
--
发表时间：
2004
期刊：
Applied Physics Letters 8・5
影响因子：
--
作者：
K.Hoshino;S.Kako;Y.Arakawa
通讯作者：
Y.Arakawa