Minority-Carrier Lifetime and Surface Recombination Velocity in Single-Crystal CdTe

Darius Kuciauskas, Patricia Dippo, Shahram Seyedmohammadi, Roger Malik, Ana Kanevce

Research output: Contribution to journalArticlepeer-review

52 Scopus Citations

Abstract

We apply an earlier developed method [Kuciauskas et al., IEEE J. Photovoltaics , vol. 3, p. 1319, 2013] to analyze surface and bulk recombination in high-quality undoped single-crystal CdTe. By using two-photon excitation time-resolved photoluminescence, we determined a room-temperature minority-carrier lifetime of 360 ns. This lifetime has weak temperature dependence at 202-295 K. We also show that the high surface recombination velocity (>105 cm/s) typical for single-crystal CdTe was reduced by an order of magnitude to approx 1 104 cm/s.

Original languageAmerican English
Article number6917003
Pages (from-to)366-371
Number of pages6
JournalIEEE Journal of Photovoltaics
Volume5
Issue number1
DOIs
StatePublished - 2015

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

NREL Publication Number

  • NREL/JA-5J00-62303

Keywords

  • Cadmium compounds
  • charge-carrier lifetime
  • photoluminescence (PL)
  • photovoltaic cells

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