(Y, Lu)AG:Ce Phosphors Synthesized by Stearate Melting Method and Their Fluorescence Properties
Source abstract
Abstract
采用硬脂酸盐熔融新方法合成了[(Y 1- x Lu x ) 1- y Ce y ] 3 Al 5 O 12 固溶体荧光粉( x =0~0.5, y =0.005~0.03), 并通过XRD、SEM、BET和PL-PLE等方法对该荧光粉进行了表征。结果表明, 纯相石榴石在800℃的低温下即可生成, 而不经过YAM和YAP中间相。煅烧所得[(Y 1- x Lu x ) 1- y Ce y ] 3 Al 5 O 12 荧光粉具有良好的均一性和分散性, 并在455 nm蓝光激发下于544 nm附近呈现最强黄光发射。粉体的发光强度随煅烧温度升高而增大, 归因于结晶度提高和表面缺陷减少。发现Ce 3+ 的荧光猝灭浓度为1.5%, 猝灭机制为Ce-Ce间的交换相互作用和晶格缺陷。发现发射峰位随Ce 3+ 含量增加而红移, 而最强激发峰和发射峰随Lu3+含量增大而蓝移, 归因于Ce 3+ 离子5d激发态能级重心移动和晶体场劈裂的共同作用。
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Catalytic Processes in Materials Science · Ammonia Synthesis and Nitrogen Reduction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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