Transparent Nano-Crystalline TiO[sub 2] films

Abstract

Preparation and properties of transparent conductive aluminum-doped zinc oxide thin films by sol-gel process Abstract. Thin films of TiO 2 have been deposited on well cleaned glass substrates by Sol-Gel dip-drive coating technique. The films have been prepared at three different pH values (3, 5, and 9) of Sol and annealed in muffle furnace at three distinct temperatures (350 °C, 450 °C, and 550 °C) for one hour and are allowed to cool to room temperature. The films were characterized by XRD, EDAX, SEM and UV-Vis Spectrophotometer. The as deposited films were found to be amorphous in nature. The annealed films exhibit anatase in crystalline structure. The EDAX results have shown that all the films are maintained with TiO 2 in composition. The XRD results reveal that they are nano-crystalline in nature and the crystalline nature increases with annealing temperature and pH of the Sol. The transmittance and absorbance spectra have shown that the films are transparent and band gap of the films are of the order of 3 eV. The ab initio studies of TiO 2 (using GGA) was performed with Vienna ab initio Simulation package and the band structure and effective masses of the electrons and holes were determined.

Morphology, chemical and electrical properties of CdO Nanoparticles on porous silicon

“…It can also be seen from Fig. 2b that significant changes take place in the spectrum of CdO deposited PS when compared to as-anodized PS.From the FTIR spectrum it is conformed that presence of Cadmium and Oxygen in the range between 1242.16 to 1627.92 cm -1 respectively [1].…”

Smart films based on bacterial cellulose nanofibers modified by conductive polypyrrole and zinc oxide nanoparticles

“…In the spectrum of BC-PPy-ZnO, the peaks at 3390 cm 21 ; the three peaks at 1502, 1507, and 1529 cm 21 ; and the peak at 1281 cm 21 were attributed the NAH stretching vibrations, the vibrations of the PPy ring, and the aromatic CAH stretching vibrations, respectively. 39 The C@N and CAN bonds were represented by peaks at 1669 and 789 cm 21 , and the CAC and CAH bonds were represented by peaks at 678 cm 21 . 24,40 The peak shift of the PPy-ZnO nanocomposite, which indicated the ZnO nanoparticles was diffused to the PPy ring.…”

“…Composites that are made from a composition of metal oxide on organic polymers improve the physical, chemical, mechanical, and other properties of organic polymers. 6 Composites of inorganic particles and organic polymers with sizes on the nanoscale have improved their functional performance in comparison with noncomposite forms. 6,7 Petroleum-based polymers such as plastic contaminate the environment, so renewable natural polymers have recently been used as alternative materials.…”

“…6 Composites of inorganic particles and organic polymers with sizes on the nanoscale have improved their functional performance in comparison with noncomposite forms. 6,7 Petroleum-based polymers such as plastic contaminate the environment, so renewable natural polymers have recently been used as alternative materials. 8,9 Cellulose is the most natural biopolymer on earth.…”