Enhanced red luminescence from GdAl3(BO3)4: Pr3+ phosphors under NUV excitation.
Luminescence
; 39(8): e4864, 2024 Aug.
Article
em En
| MEDLINE
| ID: mdl-39143604
ABSTRACT
The GdAl3(BO3)4xPr3+ (0 ≤ x ≤ 5.0 mol%) phosphors were prepared through solid state reaction route and characterized for various lighting applications. Powder X-ray diffraction investigations revel rhombohedral structure matched to JCPDS card no. 83-1907. The morphological studies confirm the agglomeration of particles with different size and shape. The emission spectra show various emission transitions originating from Pr3+(3P1,0, 1D2) emission states to their lower lying energy states upon 274 nm NUV excitation with a red shift for x > 0.5 mol%. The colour perception analysis results an intense red luminescence due to efficient energy transfer from Gd3+ to Pr3+ ions. The temperature-dependent luminescence investigations show good thermal stability even beyond 150°C with an activation energy of 0.24 eV. The observed experimental results show the potentiality of GdAl3(BO3)40.5 Pr3+ phosphor for red emitting devices and red component in phosphor converted white LEDs.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Substâncias Luminescentes
/
Luminescência
/
Gadolínio
Idioma:
En
Revista:
Luminescence
Assunto da revista:
BIOFISICA
/
BIOQUIMICA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Índia