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Transparent Conductive Copper Acetate

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Transparent conductive Copper Acetate(WSDTY) are widely used as materials in a variety of optoelectronic applications. Although some TCOs have already been produced for applications, most of them have n-type conductivity such as indium tin Copper Acetate and Al-doped ZnO. Thus, p-type TCOs are required to develop a variety of optoelectronic applications employing p-n junctions. Cu-delafossite structure wide ban gap semiconductor materials have recently attracted much attention because the discovery of p-type conductivity of CuAlO2.

CuYO2 is one of p-type TCO having delafossite structure, which has been prepared by some methods. For example, solid phase reaction of CuO and Y2O3 though Cu2Y2O5 and so-gel method using copper nitrate and yttrium nitrate as metal sources, employing air and nitrogen-flow two steps annealing have been reported. The CuYO2 films have displayed green PL properties that have a peak at 540 nm. The result suggests that the CuYO2 have a possibility to be a material for transparent light emitting devices.

In the present work, we describe the preparation of delafossite type CuYO2 thin films by the sol-gel method, in which copper acetate and yttrium acetate were used as metal sources. The gel films were annealed by one step annealing under nitrogen flow, not by two steps as described above. The dependence of the crystal structure, especially the c-axis orientation on annealing temperature is discussed.

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asked Feb 27 in Business Opportunity by weishida (620 points)

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