Enhanced Luminescence Performances of Tunable Lu3-xYxAl5O12:Mn4+ Red Phosphor by Ions of Rn+ (Li+, Na+, Ca2+, Mg2+, Sr2+, Sc3+)

Jiaqi Long; Yuzhen Wang; Ran Ma; Chaoyang Ma; Xuanyi Yuan; Zicheng Wen; Miaomiao Du; Yongge Cao

doi:10.1021/acs.inorgchem.6b02647

Enhanced Luminescence Performances of Tunable Lu_3-xY_xAl₅O₁₂:Mn⁴⁺ Red Phosphor by Ions of Rn⁺ (Li⁺, Na⁺, Ca²⁺, Mg²⁺, Sr²⁺, Sc³⁺)

Inorg Chem. 2017 Mar 20;56(6):3269-3275. doi: 10.1021/acs.inorgchem.6b02647. Epub 2017 Mar 6.

Authors

Jiaqi Long¹, Yuzhen Wang¹, Ran Ma¹, Chaoyang Ma¹, Xuanyi Yuan¹, Zicheng Wen¹, Miaomiao Du¹, Yongge Cao¹

Affiliation

¹ Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China , Beijing 100872, China.

PMID: 28263614
DOI: 10.1021/acs.inorgchem.6b02647

Abstract

A novel red-emitting Lu₃Al₅O₁₂:Mn⁴⁺ (LuAG:Mn⁴⁺) phosphor was synthesized by a solid-state reaction. The emission-band position is shifted to red region by gradually increasing the amount of substitution of Lu³⁺ for Y³⁺, eventually yielding fully Y₃Al₅O₁₂:Mn⁴⁺ (YAG:Mn⁴⁺). The compared structural and optical properties of the phosphors were investigated. From the experimentally measured spectroscopic data, crystal field parameter Dq and Racah parameters B and C are calculated to be 2127, 1464, and 3620 cm^-1 in LuAG:Mn⁴⁺, respectively. In YAG:Mn⁴⁺, Dq, B, and C are calculated to be 2082, 1524, and 3740 cm^-1, respectively. Impressively, Ca²⁺/Li⁺/Mg²⁺/Sr²⁺/Sc³⁺/Na⁺ dopants were found to be beneficial for enhancing Mn⁴⁺ luminescence, and the related mechanisms were systematically discussed.