| 花状纳米结构ZnS:Cu的制备与光学性质研究 |
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| 引用本文： | 张勇,曾祥华,孟祥东.花状纳米结构ZnS:Cu的制备与光学性质研究[J].电子元件与材料,2011,30(12):30-33. |
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| 作者姓名： | 张勇 曾祥华 孟祥东 |
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| 作者单位： | 扬州大学物理科学与技术学院,江苏扬州,225002 |
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| 基金项目： | 江苏省科技部门基金资助项目 |
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| 摘 要： | 采用水热法合成了具有花状纳米结构的ZnS:Cu粉末.利用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)和荧光光谱仪研究了在不同正硅酸四乙酯(TEOS)含量的条件下制备的样品的物相、形貌与光致发光(PL)性质.测试结果表明:制备的ZnS:Cu样品都具有立方相闪锌矿结构;由于TEOS分子...
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| 关 键 词： | ZnS:Cu 纳米结构 自组装 光致发光 |
Synthesis and luminescence properties of ZnS:Cu with flower-like nanostructure |
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| ZHANG Yong,ZENG Xianghua,MENG Xiangdong.Synthesis and luminescence properties of ZnS:Cu with flower-like nanostructure[J].Electronic Components & Materials,2011,30(12):30-33. |
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| Authors: | ZHANG Yong ZENG Xianghua MENG Xiangdong |
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| Institution: | (Department of Physics Science &Technology,Yangzhou University,Yangzhou 225002,Jiangsu Province,China) |
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| Abstract: | The ZnS:Cu powders with flower-like nanostructure were synthesized via hydrothermal method.X-ray diffraction(XRD),field-emission scanning electron microscopy(FESEM),transmission electron microscopy(TEM) and luminescence spectrometer were used to characterize the phase,morphology and photoluminescence(PL) properties of samples prepared with different contents of tetraethyl orthosilicate(TEOS).The results show that all ZnS:Cu samples possess cubic sphalerite structure.Because of the effect of TEOS,the synthesized samples are not microspheres but flower-like nanostructures which are composed of ZnS:Cu nanosheet with an average thickness of 30 nm.With the increase of content of TEOS,the intensity first of PL spectra increases first,and then decreases.Moreover,the PL emission peak keeps at 560 nm and it is concluded that the luminescence mechanism is attributed to the transition from sulfur vacancies to t2 states of Cu. |
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| Keywords: | ZnS:Cu nanostructure self-assemble photoluminescence |
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