In Gratzel’s cell, the electrons injected by the photo-excitation of dye molecules, anchored to a mesoporous TiO2 film, efficiently diffuse to the back contact achieving solar energy conversion at efficiencies exceeding 10%. The mesoporous TiO2 surface constituted of randomly arranged nanocrystallites with a roughness factor of the order 1000 is heavily populated with traps, defects and adsorbe...

The electron transport layer (ETL) is critical to carrier extraction for perovskite solar cells (PSCs). Moreover, the morphology and surface condition of ETL could influence topography layer. ZnO, TiO2, SnO2 were widely investigated as materials. However, TiO2 requires a sintering process under high temperature ZnO has trouble chemical instability. possesses advantages low-temperature fabricati...

New Yb3+-doped phosphate glasses with a composition of (98.75-x) (90 NaPO3 – 10 Na2O) x (Al2O3, TiO2, or ZnO) 1.25 Yb2O3 (in mol-%), from 0 to 3, were prepared via conventional melting and quenching process. The thermal physical properties studied by differential analysis (DTA) density measurement, respectively. glass structure was investigated using visible/infrared spectroscopy the crystalliz...

Cefoperazone belongs to the third generation of cephalosporin antibiotics. It is accumulated in water due its overuse and causes bacterial, environmental, health issues. In this work, efficiency photocatalytic degradation cefoperazone was studied using different types radiation (simulated solar, UV, LED) presence nanomaterials (ZnO TiO2). First, photolytic examined, where UV showed as most effe...

Advances in the use of nanoparticles (NPs) has created promising progress biotechnology and consumer-care based industry. This an increasing need for testing their safety toxicity profiles. Hence, efforts to understand cellular responses towards nanomaterials are needed. However, current methods using animal cancer-derived cell lines raise questions on physiological relevance. In this aspect, s...

To develop bio-packaging materials, nanocomposite films of cellulose acetate reinforced with titanium dioxide and zinc oxide nanoparticles were prepared, by the casting method at different weight ratios ZnO (1.5, 2, 2.5) wt% a constant ratio 2 TiO2. TiO2 tested using scanning electron microscopy (SEM). The mechanical properties (tensile strength elongation) improved fixed level Cellulose Acetat...

The present review on some metal oxide nanoparticles used for pressure sensor, various metal oxide containing such as (SnO2, ZnO, Al2O3, WO3, Fe2O3, Ga2O3, TiO2 and SiC, ...etc.) responds detection pressure measure in kbar unit through oxygen activity as oxidation or reduction process of an integrated in devices sensor (MEMS, CMOS, MOX and MOXQ1D...etc.) that devices measuring of pressure as st...