Influence of anatase titania nanoparticles content on optical and structural properties of amorphous silica
Al-Asbahi, Bandar Ali . 2017
In this work, the influence of TiO2 NPs content on optical and structural properties of amorphous SiO2 is
investigated. Amorphous SiO2/TiO2 thin
films were wet-mixed and then deposited onto glass substrate
by spin coating technique. The homogeneity distribution of anatase titania nanoparticles within
amorphous silica matrix was evidenced by the results of X-ray diffraction (XRD), Raman spectroscopy,
Fourier transform infrared spectroscopy (FT-IR), and
field emission scanning electron microscope (FESEM).
The crystallite size of the mixed phase increased significantly upon increment of TiO2 NPs content.
The results of emission and photoluminescence excitation (PLE) confirmed the defects creation in the
SiO2 matrix. The trapped electrons and the presence of oxygen vacancies at the TiO2/SiO2 interface
enhanced the emission intensity of SiO2/TiO2 nanocomposite thin
films.
The tuning of photophysical properties of the poly[2-methoxy-5-(3,7-dimethyl-octyloxy)-1,4-phenylenevinylene]—end capped with dimethylphenyl (DMP), MDMO-PPV–DMP, was achieved
by…
The effect of TiO2 nanoparticles (NPs) on the energy transfer mechanism from poly(9,9-dioctylfluorene-2,7-diyl) (PFO) to poly(2-methoxy-5(2-ethylhexyl)1,4-phenylenevinylene (MEH-PPV) and to poly 9…
Perovskite quantum dots (PQDs) have emerged as promising competitive materials for optoelectronics and future energy applications. In this work, high-quality PQD thin films