title: Post-growth CdCl₂ treatment on CdTe thin films grown on graphene layers using a close-spaced sublimation method.
abstract: We investigated the morphological, structural and optical properties of CdCl₂-treated cadmium telluride (CdTe) thin films deposited on defective graphene using a close-spaced sublimation (CSS) system. Heat treatment in the presence of CdCl₂ caused recrystallization of CSS-grown CdTe over the as-deposited structures. The preferential (111) orientation of as-deposited CdTe films was randomized after post-growth CdCl₂ treatment. New small grains (bumps) on the surface of CdCl₂-treated CdTe films were ascribed to nucleation of the CdTe grains during the CdCl₂ treatment. The properties of as-deposited and CdCl₂-treated CdTe films were characterized by room temperature micro-photoluminescence, micro-Raman spectroscopy, scanning electron microscopy, and X-ray diffraction analysis. Our results are useful to demonstrate a substrate configuration CdTe thin film solar cells.
authors.forename: Younghun
authors.initials: Y
authors.lastname: Jung
authors.forename: Gwangseok
authors.initials: G
authors.lastname: Yang
authors.forename: Seungju
authors.initials: S
authors.lastname: Chun
authors.forename: Donghwan
authors.initials: D
authors.lastname: Kim
authors.forename: Jihyun
authors.initials: J
authors.lastname: Kim