Long Lasting Phosphorescence in Mn2+-Activeted ZnO-B2O3 Glass

Zhi Hong Lian; Qiang Su

doi:10.4028/www.scientific.net/AMR.875-877.54

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 875-877Long Lasting Phosphorescence in Mn2+-Activeted...

Long Lasting Phosphorescence in Mn²⁺-Activeted ZnO-B₂O₃ Glass

Abstract:

Mn2+ activated ZnO-B2O3 glasses show bright and long-lasting phosphorescence (LLP). After irradiation by 254nm light, a visible red light with dominating peak at 600nm can be observed with the naked eye in the dark for up to 12h after removal of the activating light. We examined the luminescence properties using fluorescence, phosphorescence spectra and thermostimulated luminescence (TL). This phosphorescence arises from d-d transitions of Mn2+ ions. The thermostimulated luminescence (TL) intensity increases with the increasing of Mn2+ concentration from 1×10-3 mol % to 1×10-1 mol %. The decay curve of the LLP is consistent with the TL releasing velocity raised from defects of 420K. Based on the fact, we suggest that LLP is a special kind of thermostimulate luminescence. The storage and releasing of energy is closely associated with properties of defects, while the properties of LLP are related to both the defects and luminescence centers.

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Periodical:

Advanced Materials Research (Volumes 875-877)

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54-58

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.875-877.54

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Online since:

February 2014

Authors:

Zhi Hong Lian, Qiang Su

Keywords:

Long Lasting Phosphorescence, Thermostimulated Luminescence, ZnO-B₂O₃ Glass

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