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CuGaSe2 Thin Films (cugase2 + thin_film)

Distribution by Scientific Domains
Physics and Astronomy100%

Selected Abstracts

On the capability of revealing the pseudosymmetry of the chalcopyrite-type crystal structure

CRYSTAL RESEARCH AND TECHNOLOGY, Issue 3 2008
D. Abou-Ras
Abstract The tetragonal crystal-structure type of chalcopyrites (chemical formula AIBIIICVI2) is a superstructure of sphalerite type. The c /a ratio differs generally from the ideal value 2, i.e., the crystal structure is pseudocubically distorted. For CuInSe2 and CuGaSe2 thin films, simulations demonstrate that it is theoretically possible to reveal the tetragonality in electron backscatter-diffraction (EBSD) patterns for CuGaSe2, whereas it may not be possible for CuInSe2. EBSD experiments on CuGaSe2 thin films using the "Advanced Fit" band-detection method show that it is possible to extract accurate misorientation-angle distributions from the CuGaSe2 thin film. Pole figures revealing the texture of the CuGaSe2 thin film are shown, which agree well with X-ray texture measurements from the same layer. (© 2008 WILEY -VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Growth of high-quality CuGaSe2 thin films using ionized Ga precursor

PHYSICA STATUS SOLIDI (A) APPLICATIONS AND MATERIALS SCIENCE, Issue 11 2006
H. Miyazaki
Abstract We have fabricated high-quality CuGaSe2 thin films using ionized Ga precursors. The films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectroscopy. The grain size and the crystallinity of CuGaSe2 films using ionized Ga precursors were larger than those of the films using unionized Ga precursors. It was found from the experiments that the migration energy of Ga precursors played an important role in the crystal growth for high-quality CuGaSe2 films. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]