Effect of Aluminium and TIN Oxide Doping on the Structural and Optical Properties of Pulsed Laser Deposited Nanocrystalline Tantalum Oxide Thin Films
Journal Title: International Journal of Applied and Natural Sciences - Year 2017, Vol 6, Issue 3
Abstract
Nanocrystalline SnO2 and Al2O3 doped Ta2O5 thin films have been deposited on quartz substrates using reactive pulsed laser deposition. GIXRD studies indicate a phase transition from hexagonal δ- TaO to orthorhombic β-Ta2O5 for SnO2 doped films around a substrate temperature of 773 K whereas the crystallization in the hexagonal δ- TaO phase for the Al2O3 doped films is found to be around 973 K. The preferred orientation is found to be sensitive to a substrate temperature for the SnO2 doped films and is found to change from (0 0 1) to (110) crystal plane of the film deposited at a substrate temperature of 973 K. Micro Raman analysis of SnO2 and Al2O3 doped films show a hardening and disappearance of certain modes which indicates a structural phase transition as confirmed from the GIXRD studies. Al2O3 doping gives rise to an additional mode around 150 cm-1 corresponding to O-Ta-O is bending vibrations in TaO6 octahedra, which is found to be absent in SnO2 doped films. The transmittance of Ta2O5 films deposited at 300 K is found to decrease up on SnO2 doping and increase up on Al2O3 doping compared with the undoped film and decreases with the increase in substrate temperature for both dopants.
Authors and Affiliations
RENJU R KRISHNAN
Keywords
Related Articles
- EP ID EP252365
- DOI -
- Views 106
- Downloads 0
LOCAL WATER USERS’ VOICES ON PERCEPTIONS OF EXOGENOUS FACTORS DRIVING WATER INSTITUTIONAL CHANGES IN IRINGA AND KILOMBERO DISTRICTS, TANZANIA
Although there is substantial institutional changes in the water sector, insights into how exogenous factors influence these changes at local levels to remain insufficiently established, especially in developing countrie...
BACTERIA AND ITS GOOD BENEFITS IN CHEMICAL PROCESS INDUSTRY EFFLUENTS TREATMENTS
The pollution status of the effluents from chemical process industry was studied qualitatively by using bacteria during a period of one year. The study of bacteria benefits observed has been calculated in the pilot scale...
EXPLORATION OF THE MENTAL HEALTH NEEDS AND SERVICES FOR ADOLESCENTS: A QUALITATIVE STUDY
Background: Emotions and behavioral difficulties are important for adolescent’s general well being. Many adolescents experience high rates of mental health problems. Unfortunately, the need is often greater than the avai...
FIRST MOLECULAR IDENTIFICATION OF ADULT HETEROPHYESHETEROPHYES AND HETEROPHYESDISPAR (DIGENEA: HETEROPHYIDAE) FROM KUWAITI STRAY CATS USING ITS2 SEQUENCE
In September 2015, adult specimens of the trematodesHeterophyesheterophyes and Heterophyesdispar were obtained from two stray cats captured near the fish market of Kuwait City. The rDNA ITS2sequencing and subsequent phyl...
Efficacy of Some Insecticides Against Whitefly (Bemisia Tabaci) Infesting Cotton Under Field Conditions
Fifteen insecticides, viz. Bifenthrin 10 EC @800g/ha, Clothianidin 50WDG@ 40g/ha, Diafenthiuron 50WP@ 500g/ha, Fipronil 5SC@1500ml/ha, Imidacloprid 17.8SL@100ml/ha, Phorate 10CG@10kg/ha, Pyriproxyfen 10EC@1250ml/ha, Spir...