Study of the growth process and optoelectrical properties of nanocrystalline Cu3BiS3 thin films

F. Mesa, A. Dussan, G. Gordillo

Resultado de la investigación: Contribución a una revistaArtículo de la conferenciarevisión exhaustiva

37 Citas (Scopus)

Resumen

Cu3BiS3 thin films were prepared on soda-lime glass substrates by co-evaporation of the precursors in a two-step process; for that, the metallic precursors were evaporated from tungsten crucibles in the presence of elemental sulphur evaporated from a tantalum effusion cell. The films were characterized by spectral transmittance, Atomic Force Microscopy, X-ray Photoelectron Spectroscopy, Scanning Electron Microscopy and electrical measurements to investigate the effect of growth conditions on the optical, morphological and electrical properties. The results revealed that the Cu3BiS3 films present p-type conductivity, a high absorption coefficient (greater than 104 cm-1), and an energy band gap, Eg, of about 1.39 eV. We observed from Atomic Force Microscopy and electrical measurements that grain size and electric conductivity of the Cu3BiS3 samples are influenced by the copper mass ratio in this material. We found, in the high-temperature range above room temperature, that carrier transport is thermally activated with activation energies fluctuating between 0.17 and 0.28 eV. This suggests that this compound has good properties to perform as absorbent layer in thin-film solar cells.

Idioma originalInglés estadounidense
Páginas (desde-hasta)917-920
Número de páginas4
PublicaciónPhysica Status Solidi (C) Current Topics in Solid State Physics
Volumen7
N.º3-4
DOI
EstadoPublicada - 2010
Publicado de forma externa
Evento23rd International Conference on Amorphous and Nanocrystalline Semiconductors, ICANS23 - Utrecht, Países Bajos
Duración: ago 23 2009ago 28 2009

All Science Journal Classification (ASJC) codes

  • Física de la materia condensada

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