Near Infrared Long-Persistent Phosphorescence in La₃Ga₅GeO₁₄:Cr^{3+ Phosphor}

Authors

Wuzhao Yan, University of Georgia
Feng Liu, University of GeorgiaFollow
Yi-Ying Lu, University of Georgia
Xiao-Jun Wang, Georgia Southern UniversityFollow
Min Yin, University of Science and Technology of China
Zhengwei Pan, University of GeorgiaFollow

Document Type

Article

Publication Date

2010

Publication Title

Optics Express

DOI

10.1364/OE.18.020215

Abstract

Near infrared (NIR; 660−1300 nm) long-persistent phosphorescence from Cr3+ ions with persistence time of more than 1 hour was realized in La3Ga5GeO14:Cr3+ phosphor (with or without co-dopants such as Li+, Zn2+, Ca2+, Mg2+ and Dy3+). The NIR phosphorescence can be effectively achieved under UV illumination (~240−360 nm) but is barely achieved by blue light (~480 nm) irradiation, even though the blue light excitation are effective to the NIR fluorescence. The NIR phosphorescence mechanisms were discussed by measuring the irradiation energy dependence of the phosphorescence intensity.

Recommended Citation

Yan, Wuzhao, Feng Liu, Yi-Ying Lu, Xiao-Jun Wang, Min Yin, Zhengwei Pan. 2010. "Near Infrared Long-Persistent Phosphorescence in La₃Ga₅GeO₁₄:Cr^{3+ Phosphor." Optics Express, 18 (19): 20215-20221: Optica Publishing Group. doi: 10.1364/OE.18.020215
https://digitalcommons.georgiasouthern.edu/physics-facpubs/70}