Amplification of blue emission of Tm 3+ ions in Li 2 O-HfO 2 -SiO 2 glass system by means of Au 0 metallic particles

Li O-HfO -SiO -Tm O :Au O glass samples (containing fixed content of Tm O and different concentration of Au O ) were prepared and characterized. Bearing of Au metallic particles (MPs) on improving blue emission of thulium ions (Tm ) ions was explored. Optical absorption (OA) spectra exhibited multip...

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Bibliographic Details
Published in:Luminescence (Chichester, England) England), 2023-04, Vol.38 (4), p.450-461
Main Authors: Devi, Pilli Pavani Koteswari, Sekhar, Ayyagari Venkata, Kumar, Valluri Ravi, Baskaran, Gnanamuthu Sahaya, Venkatramaiah, Nutalapati, Kumar, Vandana Ravi, Veeraiah, Nalluri
Format: Article
Language:English
Subjects:
Glass
Ions
Lithium
Luminescence
Silicon Dioxide
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Summary:Li O-HfO -SiO -Tm O :Au O glass samples (containing fixed content of Tm O and different concentration of Au O ) were prepared and characterized. Bearing of Au metallic particles (MPs) on improving blue emission of thulium ions (Tm ) ions was explored. Optical absorption (OA) spectra exhibited multiple bands excited from H of Tm . Additionally, a broad peak in the wavelength range 500-600 nm due to surface plasmon resonance (SPR) of Au MPs was noticed in the spectra. Photoluminescence (PL) spectra (of thulium free glasses) indicated a peak in the visible range due to sp → d electronic transition of Au MPs. Luminescence spectra of Tm and Au O co-doped glasses exhibited intense blue emission with substantial increase of intensity with increase of Au O content. Bearing of Au MPs on the reinforcement of blue emission of Tm was discussed in detail with kinetic rate equations.
ISSN:1522-7235
1522-7243
DOI:10.1002/bio.4468