THE EFFECT OF ANNEALING ON THE SPECTRAL CONVERSION OF ULTRAVIOLET RADIATION BY THE YVO4:BI3+, YB3+ PHOSPHOR TO IMPROVE THE EFFICIENCY OF SOLAR CELLS
Rubrics: 1. CHEMISTRY
Authors:
1.
FIC Kazanskiy nauchnyy centr RAN
2.
FIC Kazanskiy nauchnyy centr RAN
3.
FIC Kazanskiy nauchnyy centr RAN
4.
FIC Kazanskiy nauchnyy centr RAN
5.
FIC Kazanskiy nauchnyy centr RAN
6.
FIC Kazanskiy nauchnyy centr RAN
7.
FIC Kazanskiy nauchnyy centr RAN
8.
FIC Kazanskiy nauchnyy centr RAN
9.
FIC Kazanskiy nauchnyy centr RAN
Type:
Article
Pages:
from 20
to 25
Status:
Published
Received:
24.12.2025
Accepted:
25.12.2025
Published:
25.12.2025
Language:
Russian
Keywords:
YVO4, BISMUTH, DOWN-CONVERSION, YTTERBIUM, LUMINESCENCE, ANNEALING, SOLAR CELL, SPECTRAL CONVERSION, ULTRAVIOLET RADIATION, PHOTOVOLTAICS, PARTICLE
Abstract (English):
YVO4 particles, doped with Bi3+ and Yb3+ ions, were synthesized using a hydrothermal method and then subjected to thermal annealing at 900°C. X-ray diffraction, infrared spectroscopy, and luminescence spectroscopy were employed to compare the original powder with the annealed sample. The results showed a remarkable increase of 100 times in the down-conversion luminescence of YVO4:Bi3+, Yb3+ in the near-infrared region following high-temperature treatment. This improvement can be attributed to the optimization of the crystal structure and the removal of water, which occurs during the hydrothermal synthesis process. High-temperature annealing holds promise for creating efficient down-conversion materials, potentially revolutionizing silicon photovoltaics by enabling lossless conversion of sunlight.
YVO4 particles, doped with Bi3+ and Yb3+ ions, were synthesized using a hydrothermal method and then subjected to thermal annealing at 900°C. X-ray diffraction, infrared spectroscopy, and luminescence spectroscopy were employed to compare the original powder with the annealed sample. The results showed a remarkable increase of 100 times in the down-conversion luminescence of YVO4:Bi3+, Yb3+ in the near-infrared region following high-temperature treatment. This improvement can be attributed to the optimization of the crystal structure and the removal of water, which occurs during the hydrothermal synthesis process. High-temperature annealing holds promise for creating efficient down-conversion materials, potentially revolutionizing silicon photovoltaics by enabling lossless conversion of sunlight.
Keywords:
YVO4, BISMUTH, DOWN-CONVERSION, YTTERBIUM, LUMINESCENCE, ANNEALING, SOLAR CELL, SPECTRAL CONVERSION, ULTRAVIOLET RADIATION, PHOTOVOLTAICS, PARTICLE
YVO4, BISMUTH, DOWN-CONVERSION, YTTERBIUM, LUMINESCENCE, ANNEALING, SOLAR CELL, SPECTRAL CONVERSION, ULTRAVIOLET RADIATION, PHOTOVOLTAICS, PARTICLE
