Chemical bath deposition of SnO2 and Cd2SnO4 thin films

    Authors

    H. Khallaf; C. T. Chen; L. B. Chang; O. Lupan; A. Dutta; H. Heinrich; F. Haque; E. del Barco;L. Chow

    Comments

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    Abbreviated Journal Title

    Appl. Surf. Sci.

    Keywords

    SnO2; Cd2SnO4; Transparent conducting oxides; Thin films; Chemical bath; deposition; TIN-OXIDE-FILMS; PHOTOVOLTAIC APPLICATIONS; TRANSPARENT; CDO; OPTIMIZATION; MECHANISM; GROWTH; PHASE; Chemistry, Physical; Materials Science, Coatings & Films; Physics, ; Applied; Physics, Condensed Matter

    Abstract

    A new approach of chemical bath deposition (CBD) of SnO2 thin films is reported. Films with a 0.2 mu m thickness are obtained using the multi-dip deposition approach with a deposition time as little as 8-10 min for each dip. The possibility of fabricating a transparent conducting oxide layer of Cd2SnO4 thin films using CBD is investigated through successive layer deposition of CBD-SnO2 and CBD-CdO films, followed by annealing at different temperatures. High quality films with transmittance exceeding 80% in the visible region are obtained. Annealed CBD-SnO2 films are orthorhombic, highly stoichiometric, strongly adhesive, and transparent with an optical band gap of similar to 4.42 eV.Cd2SnO4 films with a band gap as high as 3.08 eV; a carrier density as high as 1.7 x10(20) cm(-3); and a resistivity as low as 1.01 x 10(-2) Omega cm are achieved. (C) 2012 Elsevier B.V. All rights reserved.

    Journal Title

    Applied Surface Science

    Volume

    258

    Issue/Number

    16

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    6069

    Last Page

    6074

    WOS Identifier

    WOS:000302784200025

    ISSN

    0169-4332

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