UV–Vis luminescence in β-Ga2O3: Eu nanopowders obtained by mechano-chemical synthesis.

Autor: Kushlyk, M., Luchechko, A., Vasyltsiv, V., Szlęzak, J., Szmuc, K., Slobodzyan, D., Baláž, M., Shpotyuk, Y.
Předmět:
Zdroj: Applied Nanoscience; Nov2023, Vol. 13 Issue 11, p7115-7124, 10p
Abstrakt: A series of β-Ga2O3 nanocrystals doped with europium were obtained using a high-energy ball-milling method under different milling conditions. Studied samples were subjected to various analyses, including scanning electron microscopy SEM–EDS, X-ray diffraction, Raman spectroscopy as well as optical (photoluminescence and diffuse reflection) spectroscopies to investigate their morphology, structure, and optical properties. It was shown that the milling chamber material and rotation speed had a significant impact on the properties of the β-Ga2O3 composites, resulting in different crystalline sizes, ranging from 30 nm to 5 μm. Moreover, larger particle sizes exhibited higher host emission, while an inverse correlation was observed for Eu3+ red emission of β-Ga2O3:Eu powder. Additionally, a higher luminescence intensity was observed for the nanocomposite samples obtained under the milling in ZrO2 chamber. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index