温度对来自镶嵌在BaO薄膜中的纳米银粒子的光电发射影响(英文)  

The Influence of Temperature on Photoemission from Silver Nano-Particles Embedded BaO Thin Film*

作　　者：杨海[1] 黄瑞卿[1] 张韬[1] 周绍红[1] 郝建民[1] 马勇[2] 

机构地区：[1]云南师范大学物理系,云南昆明650092 [2]云南大学成人教育学院,云南昆明650091

出　　处：《高压物理学报》2005年第2期184-188,共5页Chinese Journal of High Pressure Physics

基　　金：ProjectsupportedbytheNatureScienceFoundationofYunnanProvinceundergrant2004A00229M.

摘　　要：研究了温度对来自镶嵌在BaO薄膜中的纳米银粒子的光电发射的影响。在不同温度下计算和讨论了其光电发射谱(入射波长在0.2～0.8μm)。光电发射谱中温度越高,光电发射峰越大。同时发现镶嵌在BaO薄膜中银纳米的临界尺寸小于3.8nm。The Dependence of the spectral distribution of photoemission from silver nano-particles embedded in BaO semiconductor thin film on temperature are predicted and investigated theoretically.At high temperature the photoemission response curves to wavelengths from 02 to 08 μm are given. It is showed that the higher temperature,the higher photoemission from silver nano-particles embedded in BaO.An explanation is also presented.It is also pointed out that the critical diameters of silver nano-particles between discrete electron eigenstates (quantum sizes region) and quasicontunuous energy bands for energy band of silver ultra-fine particles in the BaO are less than 38 nm

关 键 词：光电发射 半导体 氧化钡薄膜 纳米银粒子 

分 类 号：O484.4[理学—固体物理]