Photoluminescent and thermoluminescent properties of low temperature synthesized Nd3+ doped Mg2SiO4 nanophosphors for display and dosimetry applications

A potential green emitting orthorhombic Mg2SiO4:Nd3+ (1–9 mol%) nanophosphors were synthesized by low temperature (350 °C) solution combustion technique. The characteristic PL emission peaks at ∼458 nm (2G9/2 → 4I9/2) and ∼518 nm (4G5/2 + 2G7/2 → 4I9/2) were recorded upon 420 nm excitation and maxim...

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Bibliographic Details
Published in:Optik (Stuttgart) 2019-02, Vol.180, p.8-19
Main Authors: Naik, Ramachandra, Prashantha, S.C., Nagabhushana, H., Naik, Yashwanth V., Girish, K.M., Premkumar, H.B.
Format: Article
Language:English
Subjects:
Mg2SiO4:Nd3
Photoluminescence
Thermoluminescence
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Summary:A potential green emitting orthorhombic Mg2SiO4:Nd3+ (1–9 mol%) nanophosphors were synthesized by low temperature (350 °C) solution combustion technique. The characteristic PL emission peaks at ∼458 nm (2G9/2 → 4I9/2) and ∼518 nm (4G5/2 + 2G7/2 → 4I9/2) were recorded upon 420 nm excitation and maximum intensity was observed for 3 mol % Nd3+ doped samples. The optimised sample exhibit CIE coordinates (0.1667, 0.4336) in green region with quantum efficiency of 65%. The latent fingerprint detection analysis was carried out using optimised sample on versatile surfaces. The thermoluminescence studies of the γ- irradiated (1–5 kGy) Mg2SiO4:Nd3+ (3 mol %) samples was studied with heating rate of 5 °C s−1. The TL glow peak was observed at 160 °C. The estimated trap parameters (b, E, s) by standard methods were reported. The obtained results from photoluminescence, fingerprint detection analysis and thermoluminescence properties suggest that the optimised phosphor could be a candidate for WLEDs, forensic and dosimetry applications.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2018.11.069