|
|||||
|
|
| 低能量光子激发下纳米ZnO的超快时间分辨光谱特性 | |
| 引用本文： | 王晓芳,谢平波,赵福利,汪河洲.低能量光子激发下纳米ZnO的超快时间分辨光谱特性[J].光谱学与光谱分析,2009,29(5):1160-1163. |
| 作者姓名： | 王晓芳 谢平波 赵福利 汪河洲 |
| 作者单位： | 1. 中山大学理工学院,光电材料与技术国家重点实验室,广东广州,510275;华南理工大学材料科学与工程学院,广东广州,510641 2. 华南理工大学材料科学与工程学院,广东广州,510641 3. 中山大学理工学院,光电材料与技术国家重点实验室,广东广州,510275 |
| 摘 要： | 室温下获得了均匀沉积法制备的纳米ZnO颗粒在低能量2.33 eV光子(532 mm)的准连续皮秒脉冲激发下的频谱范围从550～1 000 mm的时间分辨光谱和时间积分光谱.随着样品粒径的增加,发光带谱带峰值出现规律性的红移.通过高斯拟合对光谱结构解迭发现,这种规律性的红移是由于低能端区域的高斯组分的相对比例增加所致.时间分辨光谱中超快发射的荧光衰减寿命(皮秒量级)也出现随着样品粒径的增大而相应变长.源于材料尺寸、纳米颗粒大的比表面积所引起的表面能级可以较好的解释此范围的超快发射特性. |
| 关 键 词： | 纳米ZnO颗粒 时间分辨光谱 表面态 |
| 收稿时间： | 2008/3/5 |
Time Resolved Photoluminescence of ZnO Nanoparticles under Low Photon Energy Excitation |
|
| WANG Xiao-fang,XIE Ping-be,ZHAO Fu-li,WANG He-zhou.Time Resolved Photoluminescence of ZnO Nanoparticles under Low Photon Energy Excitation[J].Spectroscopy and Spectral Analysis,2009,29(5):1160-1163. | |
| Authors: | WANG Xiao-fang XIE Ping-be ZHAO Fu-li WANG He-zhou |
| Institution: | WANG Xiao-fang1,2,XIE Ping-bo2,ZHAO Fu-li1,WANG He-zhou1 1.State Key Laboratory of Optoelectonic Materials , Technologies,School of Physics , Engineering,Sun Yat-sen University,Guangzhou 510275,China 2.College of Materials Science , Engineering,South China University of Technology,Guangzhou 510641,China |
| Abstract: | Time-resolved photoluminescence(TRPL)and time-integrated photoluminescence(TIPL)measurements were performed at ZnO nanoparticles with grain size from 17 nm to 110 nm prepared by homogenous precipitation method(HPM).With a quasi-continuous picoseconds laser excitation at a low photon energy of 2.33 eV(wavelength 532 nm)from a Vanguard 2000-HM532 laser,ultrafast emission with the wavelength ranging from 550 to 1 000 nm was detected.It was observed that the wavelength position of all the peaks of the samples r... |
| Keywords: | ZnO nanoparticles Time-resolved photoluminescence Surface states |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |