Tuning Shortwave Infrared Emission Wavelengths by Chemical Pressure in Cr3+,Ni2+ Co-Doped Spinel Phosphors

被引：0

作者：

Chen, Kuan-Chun ^{[1
]}

Huang, Ming-Hsuan ^{[1
]}

Huang, Wen-Tse ^{[1
]}

Kaminski, Mikolaj ^{[2
]}

Cherng, Ding-Hua ^{[3
]}

Lu, Kuang-Mao ^{[3
]}

Leniec, Grzegorz ^{[4
]}

Mahlik, Sebastian ^{[2
]}

Liu, Ru-Shi ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Univ Gdansk, Inst Expt Phys, Fac Math Phys & Informat, Wita Stwosza 57, PL-80308 Gdansk, Poland

[3] Everlight Elect Co Ltd, New Taipei City 238, Taiwan

[4] West Pomeranian Univ Technol Szczecin, Fac Chem Technol & Engn, Dept Nanomat Physicochemistry, PL-70311 Szczecin, Poland

来源：

ADVANCED OPTICAL MATERIALS | 2025年 / 13卷 / 19期

关键词：

chemical pressure; Cr3+ cluster; Cr3+-Ni2+ energy transfer; near-infrared phosphors; phosphor-converted light-emitting diode; spinel structure; STRUCTURAL EVOLUTION; LUMINESCENCE; PAIRS;

D O I：

10.1002/adom.202500393

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A chemical pressure-induced shortwave infrared emission tuning strategy is constructed through partially inverse to normal and inverse spinel structural evolution. MgGa2O4:Cr3+,Ni2+ solid-solution systems with Al3+ and Sn4+ cation dopants are synthesized, and crystal phase change is observed. Electron paramagnetic resonance investigations reveal different results of how cation substitutions affect the microstructure of the Cr3+ clusters in two solid-solution series. The photoluminescence analysis presents tunable broadband Ni2+ emission, whose peak position can be effectively controlled from 1215 to 1465 nm via chemical pressure. Finally, phosphor-converted light-emitting diodes are prepared to demonstrate potential applications of shortwave infrared light sources on bio-image and anti-counterfeiting fields. Under 300 mA driving current, the radiant flux for Mg0.98Ga0.94AlO4:0.06Cr(3+),0.02Ni(2+) and Mg1.48Ga0.94Sn0.5O4:0.06Cr(3+),0.02Ni(2+) is 55.76 and 33.41 mW, respectively. This work provides insight into the chemical pressure affecting photoluminescent properties of Cr3+ cluster-contained spinel phosphors and reveals the importance of shortwave infrared light sources in various applications.

引用

页数：8

共 37 条

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