9-13 July 2012
Microstructural and electrical evaluation of ZnO solgel films
Presented by Mr. Ruhann STEYN on 10 Jul 2012 from 17:30 to 19:30
Type: Poster Presentation
Session: Poster Session
Track: Track A - Division for Condensed Matter Physics and Materials
ZnO thin films have been produced using a solgel method. The zinc acetate, methoxyethanol and ethanolamine (also known as MEA) were mixed together for a maximum of 2 hours at temperatures between 60°C and 80°C using a magnetic stirrer/hot plate with a temperature controller which controls the temperature to within 1°C. After stirring at temperature, the solution is left for 48 hours, and after which the thin films were spin-coated onto the glass substrates. Multiple layers were deposited on the substrates, and these layers were dried at 200°C for 3 minutes between each spin-coated layer. After deposition the samples were heat treated in the temperature range 300°C to 500°C. The microstructures of the various layers before and after heat treatment were studied using AFM and SEM. X-ray diffraction and Raman spectroscopy was used to determine the phases present and the crystallinity of the film. The electrical properties (current-voltage) of the films were measured as a function of the heat treatment temperature. The effect of the heat treatment on the microstructural properties and electrical properties will be discussed.
J M Nel, UP email@example.com