Efficient Tm3+ up-conversion in lead borophosphate glasses for visible emission

Singh, Harpreet; Singh, Tajinder; Singh, Devinder; Bhatia, Vijeta; Kumar, Dinesh; Singh, Supreet Pal

doi:10.1016/j.molstruc.2023.136567

Cited by 5 publications

(2 citation statements)

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“…As the spectra show no sharp peaks, it confirmed the glassy nature of the prepared samples. Nevertheless, in all samples, there is a noticeable small hump, which aligns with findings from our previous research [29,30,31]. The significance of this hump lies in the existence of minor crystalline domains within the 25 • -30 • range in the glass cooling process during melt quenching.…”

Section: Sample Preparation and Experimental Techniquessupporting

confidence: 90%

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Role of PbO and Up-conversion in RE doped B2O3 - P2O 5 glasses

Singh,

Singh

2024

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To investigate the role of PbO as a former or a modifier and effect of its compositional variation on the physical, structural and optical properties, lithium lead borophosphate glasses were synthesized by melt quenching technique. For physical properties of the prepared glasses, density was measured by the Archimedes principle and density showed an increasing trend with increasing concentration of lead oxide. The structural analysis were performed through X-ray diffraction and Fourier transform infrared spectroscopy. Structural units due to PbO, P2 O5 and B2O3 were identified. Ultraviolet-visible absorption spec-troscopy was performed for optical properties and increase in the indirect band gap from 4.80 eV to 4.90 eV was observed. One glass sample was chosen for doping of erbium, neodymium, thulium and ytterbium, for study of their up-conversion properties. All the prepared samples were excited at 980 nm and ytterbium being a sensitizer helps in up-converting infrared light to visible light. As up-conversion is a host dependent process, up-1 conversion results suggested that the rare earth doped lithium lead borophosphate glasses are great host for up-conversion and these glasses can find applications in display devices and lasers.

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Section: Sample Preparation and Experimental Techniquessupporting

confidence: 90%

“…All the studies were conducted at room temperature. The formulae and necessary details of calculation of physical, structural and optical parameters have been explained in our previous studies [29,30,31]. The density and the physical parameters evaluated with its help are displayed in Table 2.…”

Section: Sample Preparation and Experimental Techniquesmentioning

confidence: 99%