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水热合成ZnO：Cd纳米棒的微结构及光致发光特性*

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王长远, 杨晓红, 马勇, 冯媛媛, 熊金龙, 王维. 2014: 水热合成ZnO：Cd纳米棒的微结构及光致发光特性*, 物理学报, null(15): 157701. doi: 10.7498/aps.63.157701
引用本文: 王长远, 杨晓红, 马勇, 冯媛媛, 熊金龙, 王维. 2014: 水热合成ZnO：Cd纳米棒的微结构及光致发光特性*, 物理学报, null(15): 157701. doi: 10.7498/aps.63.157701
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Wang Chang-Yuan, Yang Xiao-Hong, Ma Yong, Feng Yuan-Yuan, Xiong Jin-Long, Wang Wei. 2014: Microstructure and photoluminescence of ZnO:Cd nanoro ds synthesized by hydrothermal metho d, Acta Physica Sinica, null(15): 157701. doi: 10.7498/aps.63.157701
Citation: Wang Chang-Yuan, Yang Xiao-Hong, Ma Yong, Feng Yuan-Yuan, Xiong Jin-Long, Wang Wei. 2014: Microstructure and photoluminescence of ZnO:Cd nanoro ds synthesized by hydrothermal metho d, Acta Physica Sinica, null(15): 157701. doi: 10.7498/aps.63.157701
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水热合成ZnO：Cd纳米棒的微结构及光致发光特性*

  • 重庆师范大学，光学工程重点实验室，重庆 400047

Microstructure and photoluminescence of ZnO:Cd nanoro ds synthesized by hydrothermal metho d

  • 摘要: 采用水热法制备了ZnO和不同掺杂浓度的ZnO：Cd纳米棒,通过SEM, XRD、拉曼光谱等的分析,研究了ZnO和ZnO：Cd的微结构并测试分析了其光致发光特性.结果表明, ZnO和ZnO：Cd纳米棒呈六角纤锌矿结构, Cd掺杂使得纳米棒体积更小.由于内部张应力的影响, Cd掺杂使得材料光学带隙减少.当掺杂浓度为2%时,合成的材料光致发光谱中出现了位于2.67 eV处,由导带底和Zn空位(VZn)缺陷能级跃迁造成的蓝光发射峰,并且Cd的掺入使得位于2.90 eV附近的紫光发射峰强度增强,对于研究ZnO蓝紫发光器件具有重要的意义.
    Abstract: High-quality ZnO and Cd-doped ZnO nanorods with different Cd-doping concentrations are synthesized by using the hydrothermal method. Microstructures and photoluminescence of the samples are systematically investigated by SEM, X-ray diffraction (XRD), Raman scattering spectrum and photoluminescence (PL) spectrum. Results of XRD analysis indicate that ZnO and ZnO:Cd crystallites exhibit a hexagonal wurtzite structure. SEM shows that the nanorods become smaller due to Cd doping. There is an internal tension which induces the decrease of optical band gap in Cd-doped nanorods. Cd-doping increases the intensity of violet emission peak near 2.90 eV and the blue emission peak located at 2.67 eV appears when the doping concentration is up to 2%. This study can be used for developing blue-violet-emitting devices.
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  • 刊出日期:  2014-08-15

水热合成ZnO：Cd纳米棒的微结构及光致发光特性*

  • 重庆师范大学，光学工程重点实验室，重庆 400047

摘要: 采用水热法制备了ZnO和不同掺杂浓度的ZnO：Cd纳米棒,通过SEM, XRD、拉曼光谱等的分析,研究了ZnO和ZnO：Cd的微结构并测试分析了其光致发光特性.结果表明, ZnO和ZnO：Cd纳米棒呈六角纤锌矿结构, Cd掺杂使得纳米棒体积更小.由于内部张应力的影响, Cd掺杂使得材料光学带隙减少.当掺杂浓度为2%时,合成的材料光致发光谱中出现了位于2.67 eV处,由导带底和Zn空位(VZn)缺陷能级跃迁造成的蓝光发射峰,并且Cd的掺入使得位于2.90 eV附近的紫光发射峰强度增强,对于研究ZnO蓝紫发光器件具有重要的意义.

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