Structural, optical and electro-optical properties of thermally evaporated SnS layers

Nwofe, Patrick, Ramakrishna Reddy, Kotte, Sreedevi, Gedi, Tan, John, Forbes, Ian and Miles, Robert (2011) Structural, optical and electro-optical properties of thermally evaporated SnS layers. In: 21st Photovoltaic Science and Engineering Conference, 28 November - 2 December 2011, Fukuoka, Japan.

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Tin sulphide (SnS) films have been grown by thermal evaporation onto glass substrates under different substrate temperatures, Ts varying in the range, 280-360oC, with other growth parameters kept constant. The X-ray diffraction studies showed a strong (040) orientation and the layers had leaf-like surface topology as observed from scanning electron microscopy. The energy band gap, measured from optical studies, varied in the range 1.3-1.34 eV while the absorption coefficient was >104cm-1.The refractive index, extension coefficient and other optical parameters were also calculated. The electrical resistivity of the films decreased with increase of substrate temperatures. Heterojunction devices were made using chemical bath deposited CdS as window layer and the minority carrier diffusion lengths were measured using the spectral response studies.

Item Type: Conference or Workshop Item (Paper)
Subjects: J500 Materials Technology not otherwise specified
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: EPrint Services
Date Deposited: 19 Oct 2011 09:31
Last Modified: 12 Oct 2019 19:07

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