Study on the Local Structure and Luminescence Properties of a Y2Mg2Al2Si2O12:Eu3+ Red Phosphor for White-Light-Emitting Diodes

Xiangting Zhang; Tianze Shen; Dongxiao Kan; Dan Zhang; Rujia Dong; Zhengce An; Yanhua Song; Keyan Zheng; Ye Sheng; Zhan Shi; Haifeng Zou

doi:10.1021/acs.inorgchem.0c01095

Study on the Local Structure and Luminescence Properties of a Y₂Mg₂Al₂Si₂O₁₂:Eu³⁺ Red Phosphor for White-Light-Emitting Diodes

Inorg Chem. 2020 Jul 20;59(14):9927-9937. doi: 10.1021/acs.inorgchem.0c01095. Epub 2020 Jul 3.

Authors

Affiliations

¹ College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, China.
² College of Physics, Jilin University, Qianjin Street 2699, Changchun 130012, China.
³ State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, China.

PMID: 32618470
DOI: 10.1021/acs.inorgchem.0c01095

Abstract

Structure determines properties, and properties determine applications, which is an important ideology of natural sciences. For optical materials, it is vital to lucubrate the corresponding relationship between the local crystal structure and luminescence properties for their design, synthesis, and application. This work reports a newly designed Y₂Mg₂Al₂Si₂O₁₂(YMAS):Eu³⁺ red phosphor, in which difunctional Eu³⁺ ion is used as a red-light activator and spectroscopic probe. The qualitative and quantitative studies on the relationship between the local crystal structure and the luminescence properties of YMAS:Eu³⁺ are performed experimentally and computationally, using the Y₃Al₅O₁₂ (YAG):Eu³⁺ as contrast. Moreover, compared with YAG:Eu³⁺, the newly designed YMAS:Eu³⁺ has stronger luminescence, superior Commission Internationale de L'Eclairage chromaticity coordinates, a lower optimal doping concentration, and equally excellent thermal stability. The satisfactory color-rendering index of packaged white-light-emitting diodes demonstrates its potential performance as a red phosphor. Briefly, this work provides not only a new case for the study of the local crystal structure and luminescence properties but also a new possibility for the application of a red phosphor in solid-state lighting.