Abstract

The influence of post heat treatment on ZnO thin films prepared by RF magnetron sputtering was reported. The effect of ZnO thin films post heat treatment were varies from 300°C to 550°C had been investigated. The thin films were examined using two point probe current-voltage (I-V) measurement (Keithley 2400), UV-Vis-NIR spectrophotometer, field emission scanning electron microscopy (FESEM) (JEOL JSM 7600F). The current-voltage (I-V) measurements indicated that the conductivity of post heat treatment temperature of 500°C give the optimum conductivity. All films exhibited high UV absorption (300~380nm) properties and had low absorbance in visible and near infrared (IR) (380~1200nm) region that obtained from UV-Vis-NIR spectrophotometer measurement. The observed image from FESEM shows an increase of the nanocolumnar size, as the post heat treatment increases.

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