Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 585, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2022.121532
Keywords
Borosilicate Glasses; Photoluminescence; Energy transfer; Decay curves; CIE coordinates
Funding
- University Grants Commission (UGC), Govt. of India, New Delhi [1471/(CSIRNETJUNE2019)]
- Science and Engineering Research Board (SERB) of the Department of Science and Technology (DST), Govt. of India, New Delhi [EMR/2016/007766]
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Potassium Zinc Alumino Borosilicate (KZABS) glasses doped with Tm3+ ions were prepared and investigated for their optical properties. The glasses exhibited blue and red luminescence under different excitation wavelengths, indicating their potential for use in photonic devices.
Potassium Zinc Alumino Borosilicate (KZABS) glasses doped with Tm3+ ions have been prepared by using a melt quenching process and further investigated through various spectroscopic tools such as optical absorption, photoluminescence (PL) excitation, PL emission, and PL decay measurements. The non-crystalline nature of the as-prepared glasses was confirmed by XRD measurements. PL spectral properties show blue and red colors under different excitation wavelengths. The absorption spectrum recorded in the UV-Vis-NIR range reveals the high bandgap energy. The Inokuti-Hirayama (I-H) model well fitted to non-exponential decay curves confirms the energy transfer between Tm3+-Tm3+ ions as dipole-dipole in nature. Under 359 and 466 nm excitation wavelength the titled glasses are showing CIE coordinates falling in deep blue and deep red color, respectively. A good color tunability can be seen from the blue to the red region under different excitation wavelengths. All the studies finally reveal the superiority of Tm3+ doped KZABS glasses for their usage in blue/red-emitting photonic devices needed to fabricate photonic devices such as w-LEDs.
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