Transformation of amorphous iron oxide thin films predeposited by spray pyrolysis into a single FeSe2-phase by selenisation
The present paper investigates a simple and non-toxic method to transform amorphous iron oxide pre-deposited by spray pyrolysis of FeCl3*6H2O (0.03M)-based aqueous solution onto glass substrates heated at 350 deg C into FeSe2 thin films. The amorphous iron oxide films were heat treated under a selen...
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Veröffentlicht in: | Solar energy materials and solar cells 2005-05, Vol.87 (1-4), p.501-511 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The present paper investigates a simple and non-toxic method to transform amorphous iron oxide pre-deposited by spray pyrolysis of FeCl3*6H2O (0.03M)-based aqueous solution onto glass substrates heated at 350 deg C into FeSe2 thin films. The amorphous iron oxide films were heat treated under a selenium atmosphere (10-4Pa) at different temperatures for 6h. X-ray diffraction (XRD) was used to investigate the structure of the obtained films. Single FeSe2-phase films having good crystallinity were obtained at a selenisation temperature of 550 deg C. Optical analyses of the FeSe2 films obtained at 550 deg C enabled us to deduce a large absorption coefficient (, ). Surface scanning electron microscopy (SEM) observations show inhomogeneous films. Electrical conductivity of the as-prepared films was measured at high and low temperatures. |
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ISSN: | 0927-0248 1879-3398 |
DOI: | 10.1016/j.solmat.2004.07.036 |