Transparent conducting zirconium-doped zinc oxide (ZZO) films with high transparency and relatively low resistivity have been successfully prepared by direct current magnetron sputtering at room temperature. The effect of sputtering power on the structures
morphologies and optic-electronic properties of ZZO films was investigated in detail. The experimental results show that sputtering power is an important factor to the crystal structure and electronic properties of ZZO films. All the deposited films are polycrystalline with a hexagonal structure and a preferred orientation perpendicular to the substrates along the
c
-axis. At the optimal sputtering power of 115 W
the lowest resistivity achieved is 1.910
-3
cm with a hall mobility of 18.7 cm
2
V
-1
s
-1
and a carrier concentration of 2.0710
20
cm
-3
. All the films present a high transmittance of above 92% in the visible range. ZZO films with high transparency and relatively low resistivity deposited at room temperature will be widely used in microelectronic devices such as liquid crystal display
film solar cells and so on.
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references
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