Development of quantum cutting phosphor materials for efficacy improvement of mercury-free fluorescent lamps

开发量子切割荧光粉材料以提高无汞荧光灯的效率

• 批准号: 22360038
• 负责人: JINNO Masafumi
• 金额: $ 11.56万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22360038/
• 关键词: 量子分割蛍光体; プラセオジム; UV蛍光体; LED; 無水銀光源; プラズマ; 高効率光源; 蛍光体; 量子分割; 真空紫外励起; 量子分割蛍光体; プラセオジム; UV蛍光体; LED; 無水銀光源; プラズマ; 高効率光源; 蛍光体; 量子分割; 真空紫外励起

For the purpose of efficacy improvement of mercury-free light sources, the authors focused on quantum cuttingprocess in a special phosphor materials, in which two visible photons were emitted by one-photon excitation. During optimization of the mixtures of raw materials and sintering conditions, it is found that existence of STE (self-trapped excitation) band in the hand structure of sintered quantum cutting phosphor lowers its quantum efficiency. A Xe DBD lamp with the developed phosphor (SrAl12O19:Pr3+) showed high color temperature (7360 K) emission, which showed a possibility of a practical use as a white light emission phosphor. Another host crystal (SrAl2O4) with Pr3+dopant showed UV-C (252 nm) emission, which will be utilized for sterilization or cleaning purpose.

为了提高无汞光源的有效性，作者专注于特殊的磷光材料中的量子切割器，其中通过单光子激发发出了两个可见光子。在优化原材料和烧结条件的混合物期间，发现Ste（自被捕的激发）带在烧结的量子切割磷光磷脂的手结构中的存在会降低其量子效率。带有发达磷光器（Sral12O19：pr3+）的XE DBD灯显示高色温度（7360 K）的发射，这表明实际用作用作白光发射磷光器的可能性。另一种带有Pr3+浓度剂的宿主晶体（Sral2O4）显示出UV-C（252 nm）的发射，将用于灭菌或清洁目的。