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Pressure Tuning Spectroscopy of Mn2+ in Bulk and Nanocrystalline Sulfide Semiconductors

Published online by Cambridge University Press:  21 March 2011

Randy J. Smith ,
Yongrong Shen  and
Kevin L. Bray
Randy J. Smith
Affiliation:
Department of Chemistry, Washington State University, Pullman, WA 99164
Yongrong Shen
Affiliation:
Department of Chemistry, Washington State University, Pullman, WA 99164
Kevin L. Bray
Affiliation:
Department of Chemistry, Washington State University, Pullman, WA 99164
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Abstract

We report the results of high pressure luminescence studies of the emission of Mn2+ in bulk Zn0.55Ga0.30S up to ∼214 kbar, bulk ZnS up to ∼184 kbar, and nanocrystalline ZnS (∼8 nm particle sizes) up to ∼300 kbar. We observed a strong redshift with pressure (-30(3) cm−1/kbar) for the 4T1→6A1 emission transition of Mn2+ in all three systems. We also observed emission quenching at high pressure in all three systems and attribute the quenching to a pressure induced phase change of the ZnS host lattice to a rocksalt (NaCl) phase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 667: Symposium G – Luminescence and Luminescent Materials , 2001 , G4.9
Copyright
Copyright © Materials Research Society 2001

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References

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