Electrical, optical and structural properties of CuCrO2 films prepared by pulsed laser deposition

Transparent conducting CuCrO2 thin films were prepared by pulsed laser deposition (PLD) from a nanocrystalline CuCrO2 target. The derived CuCrO2 films were highly c-axis oriented deposited at 800 K. The microstructural, electrical as well as optical properties were studied. It was found that the films were relatively smooth and behaved as semiconductors. The energy band of the CuCrO2 films is constructed based on the Mott–Davis model in order to investigate the conduction mechanism. The transmittances of the films in the visible region are about 60–80% with direct band gaps of about 3.2 eV. The results suggested that CuCrO2 films could be successfully prepared by the PLD method, which can broaden the applications of the transparent conducting oxide films.

[1]  Y. Iida,et al.  Preparation of CuAlO2 Films by Wet Chemical Synthesis , 2004 .

[2]  T. Minami.  Transparent conducting oxide semiconductors for transparent electrodes , 2005 .

[3]  M. Bagheri-Mohagheghi,et al.  Electrical, optical and structural properties of Li-doped SnO2 transparent conducting films deposited by the spray pyrolysis technique: a carrier-type conversion study , 2004 .

[4]  Kalyan Kumar Chattopadhyay,et al.  Synthesis and characterization of p-type transparent conducting CuAlO2 thin film by DC sputtering , 2003 .

[5]  K. Chattopadhyay,et al.  Effect of excess oxygen on the electrical properties of transparent p-type conducting CuAlO2+x thin films , 2005 .

[6]  David P. Cann,et al.  Crystal chemistry and electrical properties of the delafossite structure , 2006 .

[7]  Shinzo Takata,et al.  Transparent conducting p-type NiO thin films prepared by magnetron sputtering , 1993 .

[8]  Tetsuji Okuda,et al.  Magnetic, transport, and thermoelectric properties of the delafossite oxidesCuCr1−xMgxO2(0⩽x⩽0.04) , 2005 .

[9]  Bangchuan Zhao,et al.  Fabrication of La0.8Na0.2Mn1−xCuxO3 (x = 0, 0.05) thin films on YSZ substrates via chemical solution deposition , 2004 .

[10]  Kalyan Kumar Chattopadhyay,et al.  Recent developments in the emerging field of crystalline p-type transparent conducting oxide thin films , 2005 .

[11]  Hideo Hosono,et al.  P-type electrical conduction in transparent thin films of CuAlO2 , 1997, Nature.

[12]  Weiwei Dong,et al.  Synthesis of CuAlO2 ceramics using sol-gel , 2007 .

[13]  Janet Tate,et al.  p-type conductivity in CuCr1−xMgxO2 films and powders , 2001 .