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Continuous flow supercritical chemical fluid deposition of optoelectronic quality CdS

Yang, Jixin, Hyde, Jason R., Wilson, James W., Mallik, Kanad, Sazio, Pier J.A., O'Brien, Paul, Malik, Mohamed A., Afzaal, Mohammad, Nguyen, Chinh Q., George, Michael W., Howdle, Steven M. and Smith, David C. (2009) Continuous flow supercritical chemical fluid deposition of optoelectronic quality CdS Advanced Materials, 21, (41), pp. 4115-4119. (doi:10.1002/adma.200803751).

Record type: Article


Supercritical chemical fluid deposition (SCFD) has attracted considerable attention recently due to its ability to fill high aspect ratio templates. One technologically relevant example is the damascene process deposition of conformal low-resistivity copper interconnects within the latest generation 32nm node integrated circuits. Furthermore, SCFD technology can be extended to a wide range of metals, including Cu, Ni,[6] Au, Ru, Co, Rh, and Ir into macro- and meso-structured environments for a variety of applications, particularly micro-electronics. More recently SCFD has been demonstrated as uniquely suitable for the deposition of metals, polymers, and elemental semiconductors into "micro-structured" optical fibers enabling a new generation of photonic devices including chemical sensors and optical modulators. The ability to deposit a conformal coating of metals, oxides, and indirect bandgap, elemental semiconductor materials via SCFD inside meso- and micro-scale template structures has been clearly demonstrated, with the depositions yielding continuous tubes, or wires without detectable central voids, ca. 3 nm diam. It is clear that the extension of SCFD to the deposition of optoelectronic quality direct bandgap semiconductors would be a valuable technological advance, with important niche applications.

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e-pub ahead of print date: 24 June 2009
Published date: November 2009
Keywords: CdS chalcogenide, continuous flow, semiconductors, supercritical fluids
Organisations: Optoelectronics Research Centre


Local EPrints ID: 78859
ISSN: 1521-4095
PURE UUID: 9ccaf4f9-8f52-4e12-af3c-9821e3274eae
ORCID for Pier J.A. Sazio: ORCID iD

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Date deposited: 15 Mar 2010
Last modified: 18 Jul 2017 23:21

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Author: Jixin Yang
Author: Jason R. Hyde
Author: James W. Wilson
Author: Kanad Mallik
Author: Pier J.A. Sazio ORCID iD
Author: Paul O'Brien
Author: Mohamed A. Malik
Author: Mohammad Afzaal
Author: Chinh Q. Nguyen
Author: Michael W. George
Author: Steven M. Howdle
Author: David C. Smith

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