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摘要
【 中文摘要 】
本发明公开了一种近红外发光材料及其制备方法，近红外发光材料的结构式为：M’3M1‑x‑y(BO3)3：xCe3+, yRE3+；M’为Ba、Sr中的一种或多种，M为Y、Gd中的一种或多种，RE为Yb、Pr中的一种或多种；x和y是掺入的稀土离子掺杂摩尔量，0.005≤x≤0.05，0.005≤y≤0.30。本发明采用的方法操作简单，制备周期短，对环境无污染。所述制备方法包括：将B源化合物、Ce源化合物与含M’的化合物、含M的化合物、含RE的化合物混合研磨均匀后，在还原气氛中进行煅烧，冷却到室温后研磨成粉。本发明近红外发光材料在200‑400nm有很宽的激发光谱，利用能量传递过程产生与硅的禁带宽度相匹配的位于900‑1100nm的近红外光，可作为硅太阳能电池用的光谱转换材料。
【 英文摘要 】
The invention discloses a near-infrared luminescent material and a preparation method thereof. The structural formula of the near-infrared luminescent material is M '3M1-x-y (BO3) 3 : xCe3 +, yRE3 +; M 'is one or more of Ba and Sr, M is one or more of Y and Gd, RE is one or more of Yb and Pr; X and y are doped molar amounts of doped rare earth ions, 0.005 = x = 0.05 and 0.005 = y = 0.30. The method adopted by the invention has the advantages of simple operation, short preparation period and no pollution to the environment. The preparation method comprises the following steps of : uniformly mixing and grinding a B source compound, a Ce source compound, an M '-containing compound, an M-containing compound and an RE-containing compound; calcining in a reducing atmosphere; and cooling to room temperature and grinding into powder. The near-infrared luminescent material disclosed by the invention has a wide excitation spectrum at 200-400nm, and can be used as a spectrum conversion material for a silicon solar cell by utilizing near-infrared light which is matched with the forbidden band width of silicon and is positioned at 900-1100nm and is generated in an energy transfer process. The near-infrared luminescent material disclosed by the invention can be used as a spectrum conversion material for the silicon solar cell.
其他著录项
| 代理机构 | 西安通大专利代理有限责任公司 61200 |
| 代理人 | 王艾华 |
| 申请语言 | 汉语 |
| 审查员 | 杜星汝 |
1.一种近红外发光材料，其特征在于，所述近红外发光材料的结构式为： M’3M1 x y(BO ) ：xCe3+, yRE3+3 3 ；其中：M’为Ba、Sr中的一种，M为Y、Gd中的一种，RE为Pr；x和‑ ‑y是掺入的稀土离子掺杂摩尔量，0.005≤x≤0.05，0.005≤y≤0.30。
