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| ZnTe纳米粉的共振Raman散射研究 | |
| 引用本文： | 党纯,孙家付,王必本. ZnTe纳米粉的共振Raman散射研究[J]. 河南师范大学学报(自然科学版), 2011, 39(6): 63-65,69 |
| 作者姓名： | 党纯 孙家付 王必本 |
| 作者单位： | 1. 淮阴工学院数理学院,江苏淮安,223003 2. 商丘师范学院物理与信息工程系,河南商丘,476000 3. 重庆理工大学化学化工学院,重庆,400054 |
| 摘 要： | 用Zn粉和Te粉为源材料,利用水热法在不同条件下制备了ZnTe纳米粉.用X射线衍射仪、透射电子显微镜和显微Raman光谱仪对ZnTe纳米粉进行了表征.X射线衍射谱表明制备的纳米ZnTe具有闪锌矿结构.透射电子显微镜给出在100℃,120℃和160℃时生长2h的ZnTe颗粒的平均大小分别为67 nm,89 nm和120 ... |
| 关 键 词： | ZnTe晶体 多声子 共振Raman散射 |
Resonant Raman Scattering from ZnTe Nanopowders |
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| DANG Chun,SUN Jia-fu,WANG Bi-ben. Resonant Raman Scattering from ZnTe Nanopowders[J]. Journal of Henan Normal University(Natural Science), 2011, 39(6): 63-65,69 | |
| Authors: | DANG Chun SUN Jia-fu WANG Bi-ben |
| Affiliation: | 1.College of Mathematics and Physics,Huaiyin Institute of Technology,1 Meicheng Road,Huaian 223002,China;2.Department of Physics and Information Engineering,Shangqiu Normal College,Shangqiu 476000,China;3.College of Chemistry and Chemical Engineering,Chongqing University of technology,Chongqing 400054,China) |
| Abstract: | ZnTe nanopowders are synthesized in sodium hydroxide solution by hydrothermal method under different conditions,in which the zinc and tellurium powders are used as the precursors.The nanopowders are characterized by X-ray diffractometer,transmission electron microscopy and micro-Raman spectroscopy.The X-ray diffraction patterns indicate that the ZnTe nanocrystals are zincblende structure.The images of transmission electron microscopy show that the average sizes of ZnTe nanocrystals are about 67,89,and 120 nm for the powders synthesized for 2 h at 100,120,and 160 ℃,respectively.The Raman spectra show longitudinal optical(1LO),2LO,3LO,4LO phonon peaks at about 205,410,616 and 820 cm-1,1LO peak is the strongest for the nanopowders grown at 100 and 120 ℃ and the strongest peak is 2LO peak for the nanopowder synthesized at 160 ℃,respectively.These experimental results are analyzed by resonant scattering mechanism and they are related to the change in band gap of ZnTe nanocrystals. |
| Keywords: | ZnTe crystals multiphonons resonant Raman scattering |
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