Red persistent luminescence in rare earth-free AlN:Mn2+ phosphor
Here, we investigated the persistent luminescence (PersL) properties of a rare earth-free Mn2+ doped AlN (AlN:Mn) red phosphor together with a commercial SrAl2O4:Eu2+, Dy3+ green persistent phosphor as a reference. Similar to its photoluminescence (PL) spectrum, the PersL spectrum of the AlN:Mn phosphor exhibited a red emission band centered at 600 nm due to the Mn2+: 4T1(4G) → 6A1(6S) transition with a relatively narrow full width at half maximum (FWHM) of 43 nm. The luminance of AlN:Mn powders was 0.65 mcd/m2 at 60 min after ceasing ultraviolet (UV) illumination, and its duration upon 0.32 mcd/m2 could reach over 110 min. An extremely broad thermoluminescence (TL) glow curve was observed ranging from 100 K to 600 K and peaked at around 310 K, indicating a wide trap distribution in this material.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1438705
- Alternate ID(s):
- OSTI ID: 1550240
- Report Number(s):
- LLNL-JRNL-731409
- Journal Information:
- Materials Letters, Vol. 206, Issue C; ISSN 0167-577X
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Simple prismatic patterning approach for nearly room-temperature processed planar remote phosphor layers for enhanced white luminescence efficiency
|
journal | January 2018 |
Similar Records
Deep red emitting Mg2La2SnO7:Mn4+ phosphor: Synthesis and luminescence properties
Thermoluminescence and synchrotron radiation studies on the persistent luminescence of BaAl{sub 2}O{sub 4}:Eu{sup 2+},Dy{sup 3+}