Energy Conversion in Gd{sub 2}O{sub 3} Nanocrystals Doped with Er{sup 3+} Ions

Journal Article · Wed May 15 00:00:00 EDT 2019 · Physics of the Solid State

DOI:https://doi.org/10.1134/S1063783419050366· OSTI ID:22925284

Pustovarov, V. A.; Zatsepin, A. F. ^[1]

---

1. Ural Federal University Named After the First President of Russia (Russian Federation)

The conversion of the energy absorbed by cubic Gd{sub 2}O{sub 3} nanocrystals doped with Er{sup 3+} and codoped with Yb{sup 3+} and Zn{sup 2+} ions in a temperature range of 95–425 K is studied at various concentrations of dopants. The photoluminescence spectra confirm the ability of excitation energy transfer from the Gd{sup 3+} ions or the matrix towards the Er{sup 3+} ions. The population of upper excited states in the Er{sup 3+} ions depends on the way of excitation, which cause the alterations in the probability of multiphonon relaxation from the excited states to the radiative levels. The kinetics of photoluminescence decay exhibit the possible energy transfer from anionic defects created by extra doping with Zn{sup 2+} ions. The temperature dependences of the upconversion luminescence yield for emission lines of 560 and 660 nm are found to be different.

• OSTI ID: 22925284
• Journal Information: Physics of the Solid State, Vol. 61, Issue 5; Other Information: Copyright (c) 2019 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7834
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONCENTRATION RATIO
DEFECTS
DOPED MATERIALS
ENERGY CONVERSION
ENERGY TRANSFER
ERBIUM IONS
EXCITED STATES
GADOLINIUM IONS
GADOLINIUM OXIDES
KINETICS
NANOCRYSTALS
PHOTOLUMINESCENCE
PROBABILITY
RELAXATION
SPECTRA
TEMPERATURE DEPENDENCE
YTTERBIUM IONS
ZINC IONS