Influence of Heat Treatment and Back Contact Processing on the Performance of CdS/CdTe Thin Film Solar Cells Produced in a CSS In-Line System

L. R. Cruz, W. A. Pinheiro, R. A. Medeiro, C. L. Ferreira, R. G. Dhere, J. N. Duenow

Research output: Contribution to journalArticlepeer-review

21 Scopus Citations

Abstract

CdS/CdTe photovoltaic cells were grown in a homemade close-spaced sublimation equipment where all steps of cell fabrication are carried out continuously, without breaking the vacuum. The best efficiency achieved was 7%. Some devices partially prepared in this system were finished (heat treatment and back contact processing) at the National Renewable Energy Laboratory and showed efficiencies in the range of 10-11%, due to higher values of fill factor and photocurrent. Comparison between the procedures followed in the two laboratories identified some critical issues in the CSS process carried out continuously, such as the temperature of the heat treatment and the nature of the back contact.

Original languageAmerican English
Pages (from-to)45-49
Number of pages5
JournalVacuum
Volume87
DOIs
StatePublished - Jan 2013

Bibliographical note

Publisher Copyright:
© 2012 Elsevier Ltd.

NREL Publication Number

  • NREL/JA-5200-56549

Keywords

  • Back contacts
  • CdCl treatment
  • CdTe solar cells

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