Low-temperature spray-pyrolysis of FeS2 films and their electrical and optical properties

Iron disulfide (FeS 2 ) films with a wide range of electrical resistivities 100 Ω cm ⩽ ρ ⩽ 800 kΩ cm, a high adhesion to the substrate, and a resistance to aggressive media have been prepared by the spray pyrolysis of aqueous solutions of the salts FeCl 3 · 6H 2 O and (NH 2 ) 2 CS at low temperature...

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Bibliographic Details
Published in:Physics of the solid state 2016, Vol.58 (1), p.37-41
Main Authors: Orletskii, I. G., Mar’yanchuk, P. D., Maistruk, E. V., Solovan, M. N., Brus, V. V.
Format: Article
Language:English
Subjects:
Physics
Physics and Astronomy
Semiconductors
Solid State Physics
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Summary:Iron disulfide (FeS 2 ) films with a wide range of electrical resistivities 100 Ω cm ⩽ ρ ⩽ 800 kΩ cm, a high adhesion to the substrate, and a resistance to aggressive media have been prepared by the spray pyrolysis of aqueous solutions of the salts FeCl 3 · 6H 2 O and (NH 2 ) 2 CS at low temperatures in the range 250°C ⩽ T S ⩽ 400°C. It has been found that the FeS 2 films have a high transmittance T ≈ 60–70% and are characterized by a sharp transmission edge. It has been shown that the optical band gap for direct ( E g op = 2.19–2.78 eV) and indirect ( E g ′op = 1.26–1.36 eV) optical transitions depends on the conditions of film preparation.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783416010224