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Assembly of CdSe/CdS Quantum Dots on Au Surfaces for Photoreception

Published online by Cambridge University Press:  01 February 2011

Jing Tang ,
Henrik Birkedal ,
Eric W. McFarland  and
Galen D. Stucky
Jing Tang
Affiliation:
Materials Department, University of California, Santa Barbara, CA, 93106, USA.
Henrik Birkedal
Affiliation:
Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA.
Eric W. McFarland
Affiliation:
Department of Chemical Engineering, University of California, Santa Barbara, CA, 93106, USA.
Galen D. Stucky
Affiliation:
Materials Department, University of California, Santa Barbara, CA, 93106, USA. Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA.
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Abstract

CdSe/CdS core/shell quantum dots have been synthesized and assembled onto pre-functionalized gold surfaces by either hydrogen bonding or covalent bonds through different functional groups. Control of the conditions during the deposition process allows producing a high coverage of quantum dots via molecular linkages. The quantum-dot surface is highly photoactive and is used in a surface sensitized Schottky barrier photovoltaic structure as the photoreception component. Atomic force microscopy (AFM) and X-ray photoelectron Spectroscopy (XPS) are used to characterize and confirm the morphology and linkage of the assemblies on Au surfaces. The electron transfer from the quantum-dot layer to the Schottky barrier device is examined by measuring the current-voltage (IV) curve of such photovoltaic devices under simulated sun light.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 796: Symposium V – Critical Interfacial Issues in Thin Film Optoelectronic and Energy Conversion Devices , 2003 , V3.2
Copyright
Copyright © Materials Research Society 2004

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