Dy3+ and Tb3+ co-doped boro-phosphate sol–gel vitreous thin films

Sava, Bogdan Alexandru; Filip, Ana Violeta; Boroica, Lucica; Eftimie, Mihai; Dincă, M.; Soroaia, Andrei; Trefilov, Alexandra Maria Isabel; Filipescu, M.; Brajnicov, Simona; Moldovan, A.; Iordache, Ana‐Maria; Elisa, M.

doi:10.1007/s10971-020-05427-4

Cited by 3 publications

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“…Phosphorus oxide (P 2 O 5 ) and boron oxide (B 2 O 3 ) have recently attracted increasing interest as excellent glass formers with their low melting temperatures. Boro-phosphate glasses are characterized by improved chemical stability as well as high mechanical and optical properties 1 – 7 .…”

Section: Introductionmentioning

confidence: 99%

Obtaining and conductive properties of a vanadate-borate-phosphate glass

Eftimie,

Filip,

Danescu

et al. 2023

Sci Rep

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Vanadate glasses exhibit semiconducting property at certain temperatures. This work demonstrates the conductivity of the composition 45V2O5–25B2O3–30P2O5, which is a new glass in the vanadium-boron-phosphorus ternary system that expands the glass forming area reported in literature data. The glass was obtained through a classical melt-quenching technique. The structural composition of the obtained glass was revealed with Raman spectroscopy and the amorphous characteristic has been highlighted with X-ray diffraction. The characteristic temperatures and the thermal expansion coefficient were determined by dilatometry. Based on the experimental measurements of electrical resistance, mathematical calculations were performed, resulting in a conductivity of 2.04·10−6 S/cm at 125 °C, and an activation energy of 42.91 kJ/mol for this glass. Impedance spectroscopy in DC and AC at 100 V and 100 Hz to 2 MHz, respectively, showed a lower activation energy of about 0.166 eV and transition temperatures of 24 °C and 11 °C, respectively. These results were compared with those from the literature considering the temperatures at which the reported conductivities were measured. This glass has potential applications in electronic devices and temperature sensors.

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Section: Introductionmentioning

confidence: 99%