Publications

Organic–inorganic halide organometal perovskites have demonstrated very promising performance in optoelectronic applications, but their relatively poor chemical and colloidal stability hampers the further improvement of devices based on these...
Dye-sensitized solar cells (DSSCs) based on TiO2 nanoparticles and TiO2 nanosheets with exposed {001} facets are investigated using laser-induced photovoltage and photocurrent transient decay (LIPVCD) measurements. We adopted a simplified version of...
Cupric oxide (CuO) films were prepared on various substrates by the pulsed laser deposition (PLD) technique to investigate their effects on surface morphology. As the substrate temperature decreased, the film surface roughness was also observed to...
Present red phosphor converters provide spectra dominated by sharp lines and suffer from availability and stability issues which are not ideal for color mixing in display or solid state lighting applications. We examine the use of mono dispersed 3 ...
Silicon (Si) nanoparticles were synthesized by chemical etching process at ambient temperature. Field emission transmission electron microscopy (FE-TEM), Fourier transforms infrared spectroscopy (FTIR), UV/Vis absorption and photoluminescence (PL)...
Cupric oxide (CuO) films were deposited on MgO (1 0 0) substrates by two different pulsed laser deposition (PLD) configurations, molecular gas background and RF-plasma assisted, at temperatures over 250–450 °C range. The films were characterized by...
Luminescent mesoporous Tb(OH)3@SiO2 core-shell nanospheres were synthesized through W/O microemulsion process at ambient temperature. The negatively charged silica favors a coating of the positively charged Tb3+ composite. Thus, silicon layer was...
Cadmium oxide (CdO) nanoparticles were prepared starting from organometallic cis-[dmphen-CdI2] complex (dmphen = 2,9-Dimethyl-1,10-phenanthroline) through one step calcination process at 800 oC, the thermal behavior of the complex during calcination...
The spectral properties of CdSe/ZnS core–shell quantum dots (QDs) of 3 nm size have been studied under different organic solvents, concentrations and temperatures. Our results showed that the absorption spectra of CdSe/ZnS in benzene have two humps...
In this paper, we report the structural and optical properties of Al doped ZnO (AZO) thin films grown on glass substrates using the sol–gel process. To understand the effect of Al doping on the structural and optical response of ZnO nanoparticles...
[NiCl2(C14H12N2)(H2O)] complex has been synthesized from nickel chloride hexahydrate (NiCl2·6H2O) and 2,9-dimethyl-1,10-phenanthroline (dmphen) as N,N-bidentate ligand. The synthesized complex was characterized by elemental analysis, infrared (IR)...
ZnO Nano powders were prepared by co-precipitation method which includes post-oxidation and annealing in air. Influence of laser irradiation was carried out using 355 nm laser on the physical properties of ZnO nanoparticles. SEM studies reveal...
n this study, we investigate the dependence of laser induced plasma spectroscopy LIPS plasma characteristics on the nanostructured and bulk ZnO targets. This study was performed using 670 mJ of the fundamental wavelength of Nd:YAG laser energy and 5...
Luminescent porous silicon (Psi) fabricated by simple chemical etching technique in different organic solvents was studied. By quantifying the silicon wafer piece, optical properties of the Psi in solutions were investigated. Observation shows that...
Nanostructured fluorescent pyrromethene (PM) doped-silica core-shell particles were successfully prepared by Stöber process. The average size of the particles was in the range of 10–20 nm measured by TEM micrograph. The atomic structure and...
Dye-sensitized solar cells (DSSCs) have been considered as one of the most promising new generation solar cells. Enormous research efforts have been invested to improve the efficiency of solar energy conversion which is determined by the light...
Nano structured thin film of CdO and Li doped CdO have been synthesized by sol–gel spin–coating method on amorphous glass substrates. The samples were irradiated with laser beam from pulsed Q-switched Nd:YAG laser of pulse width of 7 ns and...
In this paper, we present a study of the structural and optical properties of organic–inorganic halide-based perovskite semiconductors with band gaps varying from NIR to visible at room temperature. Thin films of nanocrystalline CH3NH3PbI3 with...
This study demonstrates the formation of extremely smooth and uniform formamidinium lead bromide (CH(NH 2 ) 2 PbBr 3 = FAPbBr 3 ) fi lms using an optimum mixture of dimethyl sulfoxide and N , N -dimethylformamide solvents. Surface morphology and...