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Separation of Nucleation and Crystallization in the Solution-Phase Synthesis of Group IV Quantum Structures

Published online by Cambridge University Press:  25 February 2011

James R. Heath  and
Paul F. Seidler
James R. Heath
Affiliation:
IBM Research Division, T. J. Watson Research Center, Yorktown Heights, NY 10598
Paul F. Seidler
Affiliation:
IBM Research Division, T. J. Watson Research Center, Yorktown Heights, NY 10598
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Abstract

Solution-phase chemical syntheses are presented for the fabrication of Ge quantum structures, including 0-dimensional dots, 1-dimensional wires, and 2-dimensional platelets. The syntheses, which are based on the reduction of chlorogermanes and organochlorogermanes, are carried out in two steps. Step I, the nucleation step, is done at ambient temperature with a liquid metal reducing agent (NaK) and under the influence of sonication. Step 2, crystallization, is carried out at elevated temperatures and pressures in a sealed bomb. Separation of these two steps is shown to be critical for obtaining size and shape control over the product crystallite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 298: Symposium B – Silicon-Based Optoelectronic Materials , 1993 , 91
Copyright
Copyright © Materials Research Society 1993

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