Epitaxial growth of kesterite Cu2ZnSnS4 on a Si(001) substrate by thermal co-evaporation (original) (raw)

Thin Solid Films, 2014

Abstract

ABSTRACT Using thermal co-evaporation we have prepared epitaxial Cu2ZnSnS4 (CZTS) films on Si(001) substrates. A substrate temperature as high as 370 °C and proper substrate cleaning (HF-dip followed by thermal desorption of surface hydrogens) are found to be necessary for the epitaxial growth. Detailed transmission electron microscopy measurements and X-ray diffraction studies are used to reveal the orientation relation of the CZTS films with the underlying silicon substrate, and the formation of defects within the CZTS layer.

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