Open AccessPhysical properties and up- conversion development of Ho3+ions loaded in nano-composite silica titania thin film
Author(s) -
Hanaa Shaier,
Akram Salah,
Wafaa Mousa,
Sawsan S Hamed,
I. K. Battisha
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/abb4fe
Subject(s) - materials science , thin film , crystallite , annealing (glass) , nano , ion , doping , composite number , analytical chemistry (journal) , substrate (aquarium) , sol gel , chemical engineering , nanotechnology , composite material , optoelectronics , chemistry , oceanography , organic chemistry , chromatography , geology , engineering , metallurgy
Structural and fluorescence properties were investigated for different concentrations of Ho 3+ ions doped silica titania nano-composite thin films. These films were deposited on glass substrates at two different annealing temperatures 300 and 500 °C for 3 h.The obtained films were transparent, smooth and adhesive to the substrate glass surface. The crystallite sizes were in the nano-scale phase with values ranged from 15 to 20 nm. The average thin film thickness was found to be equal to about 1.7 μ m. Blue, red and green up-conversion emissions are detected using 808 nm laser diode. The highest emission bands were observed in the doped film with 0.4 mol% of Ho 3+ ions. The prepared thin films could be considered promising candidates for higher efficiency up-down shifting solar cell, photonic, photo-catalytic and optical sensor applications.