Optical and electrical properties of SnO2 films prepared by chemical vapour deposition |
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Authors: | S Raghunath Reddy A K Mallik S R Jawalekar |
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Affiliation: | (1) Regional Sophisticated Instrumentation Centre, Indian Institute of Technology, 400 076 Bombay, India;(2) Department of Electrical Engineering, Indian Institute of Technology, 400 076 Bombay, India |
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Abstract: | Transparent and conducting SnO2 films are prepared at 500°C on quartz substrates by chemical vapour deposition technique, involving oxidation of SnCl2. The effect of oxygen gas flow rate on the properties of SnO2 films is reported. Oxygen with a flow rate from 0·8–1·35 lmin−1 was used as both carrier and oxidizing gas. Electrical and optical properties are studied for 150 nm thick films. The films
obtained have a resistivity between 1·72 × 10−3 and 4·95 × 10−3 ohm cm and the average transmission in the visible region ranges 86–90%. The performance of these films was checked and the
maximum figure of merit value of 2·03 × 10−3 ohm−1 was obtained with the films deposited at the flow rate of 1·16 lmin−1. |
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Keywords: | Chemical vapour deposition figure of merit SnO2 film transparent conducting film |
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