过渡金属离子掺杂发光玻璃的性能研究及应用

发布时间：2018-05-31 10:59

本文选题：过渡金属离子 + 碲酸盐玻璃　；参考：《河北大学》2015年硕士论文

【摘要】：本论文分别采用水热法和高温固相法合成了氧化铝和铝酸钇为基质的荧光材料,并将其掺入到碲酸盐玻璃和有机玻璃中制得发光玻璃。分析了样品的晶体结构,通过改变掺杂浓度对其发光性质进行了研究,其主要内容如下:(1)采用水热法制备了Al_2O_3:Cr~(3+)纳米荧光粉。分析了样品的晶体结构和发光性质。测量样品的激发谱,得到了两个宽带激发峰,其激发峰峰值位于405 nm和557 nm。分别用405 nm和557 nm光激发样品,得到一个窄带的发射光谱,发射峰峰值位于698 nm。Al_2O_3:Cr~(3+)纳米荧光粉宽带吸收、窄带发射的光谱特性可应用于提高太阳能电池效率和促进农作物生长上。进一步研究了Al_2O_3:Cr~(3+)纳米荧光粉应用于太阳能电池和农业薄膜的可行性。制备了掺Al_2O_3:Cr~(3+)纳米荧光粉的碲酸盐无机玻璃、有机玻璃和聚乙烯膜。通过测试XRD、激发谱和发射谱,证明了掺Al_2O_3:Cr~(3+)纳米荧光粉的发光玻璃保持了Al_2O_3:Cr~(3+)纳米荧光粉的发光特性。测量了不同Al_2O_3:Cr~(3+)荧光粉掺杂浓度的碲酸盐玻璃应用于多晶硅太阳能电池的外量子效率和光伏参数,得出Al_2O_3:Cr~(3+)掺杂浓度为0.5%的碲酸盐玻璃能有效的提高太阳能电池效率。(2)采用固相法制备了Y_3Al_5O_12:Mn~(4+)荧光粉。测量激发谱和发射谱得出Y_3Al_5O_12:Mn~(4+)荧光粉存在两个宽带激发峰和窄带发射峰。Y_3Al_5O_12:Mn~(4+)荧光粉的宽带吸收、窄带发射的光谱特性可应用于提高太阳能电池效率和促进农作物生长上。进一步研究Y_3Al_5O_12:Mn~(4+)荧光粉提高太阳能电池效率和促进农作物生长的可行性,制备了掺Y_3Al_5O_12:Mn~(4+)荧光粉的碲酸盐无机玻璃和有机玻璃。通过测试XRD、激发谱和发射谱,证明了掺Y_3Al_5O_12:Mn~(4+)荧光粉的发光玻璃保持了Y_3Al_5O_12:Mn~(4+)的发光特性,进一步说明了掺Y_3Al_5O_12:Mn~(4+)荧光粉的碲酸盐无机玻璃和有机玻璃对于提高太阳能电池效率和促进农作物生长具有潜在的应用。
[Abstract]:In this paper, the luminescent materials of alumina and yttrium aluminate were synthesized by hydrothermal method and high temperature solid state method respectively, and doped into tellurite glass and plexiglass to produce luminescent glass. The crystal structure of the samples was analyzed and the luminescent properties of the samples were studied by changing the doping concentration. The main contents are as follows: 1) Al_2O_3:Cr~(3) nanocrystalline phosphors were prepared by hydrothermal method. The crystal structure and luminescence properties of the samples were analyzed. The excitation spectra of the samples were measured and two broad band excitation peaks were obtained. The excitation peaks were located at 405 nm and 557 nm. A narrow-band emission spectrum was obtained by excitation of the samples at 405nm and 557nm, respectively. The emission peak was located at 698 nm.Al_2O_3:Cr~(3) and the emission peak was at 698 nm.Al_2O_3:Cr~(3). The spectral characteristics of narrowband emission can be used to improve the efficiency of solar cells and promote the growth of crops. The feasibility of the application of Al_2O_3:Cr~(3 nano-phosphors to solar cells and agricultural thin films was further studied. Inorganic tellurite glass, organic glass and polyethylene film doped with Al_2O_3:Cr~(3) were prepared. By testing XRD, excitation and emission spectra, it is proved that the luminescent glass doped with Al_2O_3:Cr~(3) keeps the luminescence characteristics of Al_2O_3:Cr~(3) nano-phosphors. The external quantum efficiency and photovoltaic parameters of different Al_2O_3:Cr~(3) doped tellurite glasses for polysilicon solar cells were measured. The results showed that Al_2O_3:Cr~(3 (0.5%) doped tellurite glass could effectively improve the efficiency of solar cells. The Y_3Al_5O_12:Mn~(4) phosphors were prepared by solid phase method. The measurement of excitation and emission spectra shows that there are two broadband excitation peaks and narrow-band emission peaks in Y_3Al_5O_12:Mn~(4) phosphors. The broad band absorption of phosphors is obtained. The spectral characteristics of narrowband emission can be used to improve the efficiency of solar cells and to promote the growth of crops. The feasibility of Y_3Al_5O_12:Mn~(4 phosphors to improve the efficiency of solar cells and promote the growth of crops was studied. Inorganic tellurite glasses and plexiglass doped with Y_3Al_5O_12:Mn~(4 phosphors were prepared. By testing the XRD, excitation and emission spectra, it is proved that the luminescent glass doped with Y_3Al_5O_12:Mn~(4) keeps the luminescence characteristics of Y_3Al_5O_12:Mn~(4). It is further explained that inorganic tellurite glass and plexiglass doped with Y_3Al_5O_12:Mn~(4) have potential applications in improving the efficiency of solar cells and promoting the growth of crops.
【学位授予单位】：河北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ171.112

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