Improved carrier-transport properties of passivated CdMnTe crystals

K. H. Kim, G. S. Camarda, A. E. Bolotnikov, R. B. James, Jinki Hong, Sunung Kim

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


By analyzing photoconductive decay curves, we compared the surface recombination velocities of semi-insulating CdMnTe:In crystals grown by the vertical Bridgman method with or without surface passivation. Sulfur passivation effectively prevents the formation of a conductive Te oxide layer on the CdMnTe surface and reduces the surface recombination velocities by about one third. We demonstrated, from IR observations of the distribution maps of Te precipitates, that their configuration affects the anomalous photoconductive decay curves and the gamma-ray spectrum in some areas of the CdMnTe crystal. Notably, not only the size but also the spatial configuration of the Te precipitates modulates the carrier-transport properties.

Original languageEnglish
Article number093705
JournalJournal of Applied Physics
Issue number9
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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