Nonradiative Energy Transfer in Bi<sub>2</sub>O<sub>3</sub>/Tm<sub>2</sub>O<sub>3</sub> Powders under IR Excitation at Liquid Nitrogen Temperature

Nonradiative Energy Transfer in Bi<sub>2</sub>O<sub>3</sub>/Tm<sub>2</sub>O<sub>3</sub> Powders under IR Excitation at Liquid Nitrogen Temperature

The presented work shows the study of energy transitions in the NIR and visible regions in the system of Bi<sub>2</sub>O<sub>3</sub> and Tm<sub>2</sub>O<sub>3</sub> powders. Mechanisms of upconversion luminescence and NIR luminescence between two Bi<...

Full description

Bibliographic Details
Main Authors: Dmitry A. Artamonov, Anna V. Tsibulnikova, Vasily A. Slezhkin, Alexey S. Kozhevnikov, Ilia G. Samusev, Ivan I. Lyatun, Valery V. Bryukhanov
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Crystals
Subjects:
energy transfer
upconversion luminescence
low temperatures
reflectance
level splitting
Online Access:https://www.mdpi.com/2073-4352/13/3/534
Description
Summary:The presented work shows the study of energy transitions in the NIR and visible regions in the system of Bi<sub>2</sub>O<sub>3</sub> and Tm<sub>2</sub>O<sub>3</sub> powders. Mechanisms of upconversion luminescence and NIR luminescence between two Bi<sup>3+</sup> and Tm<sup>3+</sup> ions at T = 80 K accompanied with nonradiative energy transfer through the vibrational levels were investigated under IR photoexcitation. The absorption bands of the samples on the reflection spectra were examined in the visible region. The values of the emission cross-section parameters were calculated for the Bi<sub>2</sub>O<sub>3</sub>/Tm<sub>2</sub>O<sub>3</sub> complexes.
ISSN:2073-4352

Similar Items