In:
Journal of the American Ceramic Society, Wiley, Vol. 106, No. 10 ( 2023-10), p. 6342-6351
Abstract:
A series of Ni 2+ ‐sensitized LiGa 5 O 8 nanocrystals doped with varying amounts of Sn 4+ were synthesized via a high‐temperature solid‐state method. X‐ray diffraction and scanning electron microscopy were employed to investigate the microstructure of the LiGa 5 O 8 host, and optical spectroscopy was used to examine the effects of Sn 4+ addition on the emission spectra and persistent luminescence (PersL) properties, which indicated a homogeneous distribution of the constituent elements in the phosphor. The Sn 4+ incorporation led to an approximately sixfold enhancement of photoluminescence intensity at room temperature and decrease in the energy transition of Ni 2+ ( 3 T 2 ( 3 F)→ 3 A 2 ( 3 F)), which resulted in ∼65 nm bathochromic shift in the photoluminescence emission maxima. However, the addition of Sn 4+ dopant led to a decrease in the quantum yield of luminescence compared to that of the original phosphor. Temperature‐dependent thermoluminescence measurements revealed that doping of LiGa 5 O 8 with Sn 4+ interfered with the Ni 2+ trap centers. Moreover, Ni 2+ ‐sensitized Sn 4+ ‐doped LiGa 5 O 8 nanocrystals exhibited an afterglow effect that persisted for up to 300 s.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.v106.10
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
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