Optoelectrical, structural and morphological characterization of Cu2ZnSnSe4 compound used in photovoltaic applications Academic Article

journal

  • Applied Surface Science

abstract

  • © 2016 Elsevier B.V.In this work, results are reported concerning the effect of the deposition parameters on the structural properties of Cu2ZnSnSe4 (CZTSe) thin films, grown through a chemical reaction of the metallic precursors by co-evaporation in a two-stage process. XRD measurements revealed that the samples deposited by selenization of Cu and Sn grow in the kesterite phase (CZTSe), respectively. Effect of the deposition temperature and mass ratio Cu/ZnSe on the transport properties of CZTSe films were analyzed. It was also found that the electrical conductivity of the thin films is affected by the transport of free carriers in extended states of the conduction band as well as for variable range hopping transport mechanisms, each one predominating in a different temperature range. The molecular and morphological effect on the compound through Raman and AFM measurements was studied.

publication date

  • 2016/10/30

keywords

  • Chemical reactions
  • Conduction bands
  • Electric Conductivity
  • Evaporation
  • Structural properties
  • Temperature
  • Thin films
  • Transport properties

International Standard Serial Number (ISSN)

  • 0169-4332

number of pages

  • 7

start page

  • 386

end page

  • 392