Formation of n-type pyrite films from electrodeposited iron sulphides: effect of annealing temperature

Journal Article · Thu Jun 19 00:00:00 EDT 2003 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(03)00116-8· OSTI ID:20887974

Gomes, A; Ares, J R; Ferrer, I J; Sanchez, C

The n-type polycrystalline pyrite films were obtained by annealing mackinawite electrodeposited on metallic titanium substrates in sulphur atmosphere in the temperature range 523-773 K. The detailed structural and morphological characterisation of the films shows that an increase of crystallite size and a porosity decrease was achieved by increasing the sulphuration temperature. The measurement of thermoelectric effect indicates that pyrite films present n-type conduction, which is attributed to the diffusion of Ti atoms from the substrate. The Seebeck coefficient varies from -54 to -24 {mu}V/K, depending on pyrite grain size.

• OSTI ID: 20887974
• Journal Information: Materials Research Bulletin, Vol. 38, Issue 7; Other Information: DOI: 10.1016/S0025-5408(03)00116-8; PII: S0025540803001168; Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
CRYSTAL STRUCTURE
DIFFUSION
ELECTRODEPOSITION
GRAIN SIZE
IRON
POLYCRYSTALS
POROSITY
PYRITE
SUBSTRATES
SULFIDES
SULFUR
TEMPERATURE RANGE 0400-1000 K
THIN FILMS
TITANIUM
X-RAY DIFFRACTION