Cathodoluminescence of Cu Diffusion in CdTe Thin Films for CdTe/CdS Solar Cells

Manuel J. Romero, David S. Albin, Mowafak M. Al-Jassim, Xuanzhi Wu, Helio R. Moutinho, Ramesh G. Dhere

Research output: Contribution to journalArticlepeer-review

42 Scopus Citations


We investigate the distribution of Cu acceptor states in CdTe thin films used in high-efficiency solar cells. These states are CuCd and Cui+-VCd- complexes, which are relatively deep and shallow acceptors, respectively. Cathodoluminescence spectroscopy and imaging show that, first, CuCd and Cu i+-VCd- do not coexist and, second, the primary diffuser is represented by Cui+-V Cd- complexes. Our results are used to discuss the effect of grain boundaries on Cu diffusion.

Original languageAmerican English
Pages (from-to)2962-2964
Number of pages3
JournalApplied Physics Letters
Issue number16
StatePublished - 2002

NREL Publication Number

  • NREL/JA-520-32453


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