Red persistent luminescence in rare earth-free AlN:Mn2+ phosphor

Xu, Jian; Cherepy, Nerine J.; Ueda, Jumpei; Tanabe, Setsuhisa

doi:10.1016/j.matlet.2017.07.015

Red persistent luminescence in rare earth-free AlN:Mn²⁺ phosphor

Journal Article · Mon Jul 03 04:00:00 EDT 2017 · Materials Letters

DOI:https://doi.org/10.1016/j.matlet.2017.07.015· OSTI ID:1438705

^[1]; Cherepy, Nerine J. ^[2]; Ueda, Jumpei ^[1]; Tanabe, Setsuhisa ^[1]

Kyoto Univ., Kyoto (Japan)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

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 Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1438705

Alternate ID(s):: OSTI ID: 1550240

Report Number(s):: LLNL-JRNL--731409

Journal Information:: Materials Letters, Journal Name: Materials Letters Journal Issue: C Vol. 206; ISSN 0167-577X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Simple prismatic patterning approach for nearly room-temperature processed planar remote phosphor layers for enhanced white luminescence efficiency Kwon, Oh Hyeon; Kim, Jun Sik; Jang, Jin Woo Optical Materials Express, Vol. 8, Issue 10 https://doi.org/10.1364/ome.8.003230	journal	January 2018

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36 MATERIALS SCIENCE
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