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Polychalcogenide Complexes as Low Temperature Precursors for Quantum Size and Bulk Binary and Ternary Semiconductors

Published online by Cambridge University Press:  25 February 2011

Sandeep Dhingra,
Kang-Woo Kim and
Mercouri G. Kanatzidis
Sandeep Dhingra
Affiliation:
Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, East Lansing MI 48824
Kang-Woo Kim
Affiliation:
Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, East Lansing MI 48824
Mercouri G. Kanatzidis
Affiliation:
Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, East Lansing MI 48824
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Abstract

We report the utility of \Cd(Se4)2]2-, \Cu4Se12]2- and \In3Se15]3- as convenient low temperature precursors to semiconducting CdSe and CuInSe2. DMF and DMSO solutions of these complexes react with Se-abstracting reagents such as CN- and n-(Bu3)P to yield the corresponding binary solids at 155 °C or less. Appropriate stoichiometric mixtures of \Cu4Se12]2- and \In3Se15]3- react to give CuInSe2. The semiconducting solids were characterized with UV/vis spectroscopic, X-ray crystallographic and electron (scanning and transmission) microscopic techniques. The particle size of these materials can range from the quantum-size regime to the bulk regime, depending on the reaction conditions, metal precursor complex and Se-abstracting reagent used.

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References

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