Thin Solid Films, Vol.422, No.1-2, 176-179, 2002
Room-temperature deposition of Al-doped ZnO films by oxygen radicalassisted pulsed laser deposition
Transparent and conductive Al-doped ZnO films have been deposited at room temperature by oxygen radical-assisted pulsed laser deposition. An average optical transmittance of more than 86% (0.7 mum film thickness) in the wavelength range 400-800 nm and resistivity as low as 5 X 10 (-4) Omega cm were obtained from films deposited using a radical oxygen source. The surface roughness of the ZnO films measured by means of atomic force microscopy was found to be below 1 nm, suggesting that soft deposition techniques with low kinetic energy sources can make possible the deposition of high-quality transparent conducting ZnO films, even at room temperature.