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Bulletin of Materials Science

, 41:159 | Cite as

Effect of annealing temperature and \(\hbox {CdCl}_{2}\) treatment on the photo-conversion efficiency of \(\hbox {CdTe/Zn}_{0.1}\) \(\hbox {Cd}_{0.9}\)S thin film solar cells

  • Sonal Singhal
  • Amit Kumar Chawla
  • Hari Om Gupta
  • Ramesh Chandra
Article
  • 3 Downloads

Abstract

We report the effects of annealing in conjunction with \(\hbox {CdCl}_{2}\) treatment on the photovoltaic properties of \(\hbox {CdTe/Zn}_{0.1}\hbox {Cd}_{0.9}\)S thin film solar cells. CdTe layer is subjected to dry \(\hbox {CdCl}_{2}\) treatment by thermal evaporation method and subsequently, heat treated in air using a tube furnace from 400 to \(500{^{\circ }}\hbox {C}\). AFM and XRD results show improved grain size and crystallographic properties of the CdTe film with dry \(\hbox {CdCl}_{2}\) treatment. This recrystallization and grain growth of the CdTe layer upon \(\hbox {CdCl}_{2}\) treatment translates into improved photo-conversion efficiencies of \(\hbox {CdTe/Zn}_{0.1}\hbox {Cd}_{0.9}\)S cell. The results of dry \(\hbox {CdCl}_{2}\) treatment were compared with conventional wet \(\hbox {CdCl}_{2}\) treatment. Photo-conversion efficiency of 5.2% is achieved for dry \(\hbox {CdCl}_{2}\)-treated cells in comparison with 2.4% of wet-treated cell at heat treatment temperature of \(425{^{\circ }}\hbox {C}\).

Keywords

\(\hbox {CdCl}_{2}\) treatment thin film solar cells photo-conversion efficiency 

Notes

Acknowledgements

We are grateful to Department of Science and Technology, New Delhi, India, for providing the financial support to carry out this piece of work (grant no. SR/FTP/ETA-1/2012).

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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  • Sonal Singhal
    • 1
  • Amit Kumar Chawla
    • 2
  • Hari Om Gupta
    • 3
  • Ramesh Chandra
    • 4
  1. 1.Department of Electrical EngineeringShiv Nadar UniversityNoidaIndia
  2. 2.Department of Physics, School of EngineeringUniversity of Petroleum & Energy StudiesDehradunIndia
  3. 3.Jaypee Institute of Information TechnologyNoidaIndia
  4. 4.Institute Instrumentation Center, IIT RoorkeeRoorkeeIndia

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