Applied Physics A

, 122:84 | Cite as

Compositional and structural properties of pulsed laser-deposited ZnS:Cr films

  • Mohammadreza Nematollahi
  • Xiaodong Yang
  • Eivind Seim
  • Per Erik Vullum
  • Randi Holmestad
  • Ursula J. Gibson
  • Turid W. Reenaas
Article

Abstract

We present the properties of Cr-doped zinc sulfide (ZnS:Cr) films deposited on Si(100) by pulsed laser deposition. The films are studied for solar cell applications, and to obtain a high absorption, a high Cr content (2.0–5.0 at.%) is used. It is determined by energy-dispersive X-ray spectroscopy that Cr is relatively uniformly distributed, and that local Cr increases correspond to Zn decreases. The results indicate that most Cr atoms substitute Zn sites. Consistently, electron energy loss and X-ray photoelectron spectroscopy showed that the films contain mainly Cr2+ ions. Structural analysis showed that the films are polycrystalline and textured. The films with ~4 % Cr are mainly grown along the hexagonal [001] direction in wurtzite phase. The average lateral grain size decreases with increasing Cr content, and at a given Cr content, increases with increasing growth temperature.

Notes

Acknowledgments

This work is done in part within the Norwegian Center for Solar Cell Technology, a Center for Environment-friendly Energy Research co-sponsored by the Norwegian Research Council and Research and Industry in Norway (Project No. 193829). The authors also acknowledge the Research Council of Norway for financial support via the Nano2021 program (Project No. 203503).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Mohammadreza Nematollahi
    • 1
  • Xiaodong Yang
    • 1
  • Eivind Seim
    • 1
  • Per Erik Vullum
    • 1
    • 2
  • Randi Holmestad
    • 1
  • Ursula J. Gibson
    • 1
  • Turid W. Reenaas
    • 1
  1. 1.Department of PhysicsNorwegian University of Science and TechnologyTrondheimNorway
  2. 2.SINTEF Materials and ChemistryTrondheimNorway

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