Photoluminescence properties of Ca4La6(SiO4)4(PO4)2O2-based phosphors for wLEDs

Ju Cheng; Jia Zhang; Jian Lu; Xintian Bian; Hongchao Zhang; Zhonghua Shen; Xiaowu Ni; Pengcheng Ma; Jin Shi

doi:10.3788/COL201917.051602

Journals >Chinese Optics Letters >Volume 17 >Issue 5 >Page 051602 > Article

Chinese Optics Letters
Vol. 17, Issue 5, 051602 (2019)

Photoluminescence properties of Ca₄La₆(SiO₄)₄(PO₄)₂O₂-based phosphors for wLEDs

Ju Cheng^1、2, Jia Zhang^1、*, Jian Lu^2、**, Xintian Bian¹, Hongchao Zhang², Zhonghua Shen², Xiaowu Ni², Pengcheng Ma¹, and Jin Shi¹

Author Affiliations

¹School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian 223001, China

²School of Science, Nanjing University of Science and Technology, Nanjing 210094, China

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DOI: 10.3788/COL201917.051602 Cite this Article Set citation alerts

Ju Cheng, Jia Zhang, Jian Lu, Xintian Bian, Hongchao Zhang, Zhonghua Shen, Xiaowu Ni, Pengcheng Ma, Jin Shi. Photoluminescence properties of Ca₄La₆(SiO₄)₄(PO₄)₂O₂-based phosphors for wLEDs[J]. Chinese Optics Letters, 2019, 17(5): 051602 Copy Citation Text

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Abstract

The apatite compound Ca₄La₆(SiO₄)₄(PO₄)₂O₂ (CLSPO) was explored as the host material for phosphors used in white light-emitting diodes (wLEDs). The crystal structure of the CLSPO host prepared by the solid-state reaction method was investigated with Rietveld refinement. The rare earth ions (Eu³⁺/ Tb³⁺/Ce³⁺, Tb³⁺/Tb³⁺, Mn²⁺) activated CLSPO phosphors were synthesized, and their photoluminescence properties, quantum yields, as well as thermal stabilities, were studied. Under near-ultraviolet excitations, the Eu³⁺ and Tb³⁺-doped CLSPO compounds exhibited red and green emissions with high luminescence efficiencies. Besides, tunable emissions from green to orange were obtained by introducing Mn²⁺ ions into the Tb³⁺-doped CLSPO samples. The results showed that the phosphors studied may have potential applications for wLEDs.