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Surface Morphology Investigation of Au and Pt Electroless Contact on ZnCdTe Crystal by Atomic Force Microscopy

Published online by Cambridge University Press:  26 February 2011

Zhiyu Hu ,
Zhihua Hu ,
K. T. Chen ,
M. A. George ,
A. Burger  and
W. E. Collins
Zhiyu Hu
Affiliation:
Center for Photonic Materials and Devices,Department of Physics, Fisk University, Nashville, Tennessee 37208, U.S.A.
Zhihua Hu
Affiliation:
Center for Photonic Materials and Devices,Department of Physics, Fisk University, Nashville, Tennessee 37208, U.S.A.
K. T. Chen
Affiliation:
Center for Photonic Materials and Devices,Department of Physics, Fisk University, Nashville, Tennessee 37208, U.S.A.
M. A. George
Affiliation:
Center for Photonic Materials and Devices,Department of Physics, Fisk University, Nashville, Tennessee 37208, U.S.A.
A. Burger
Affiliation:
Center for Photonic Materials and Devices,Department of Physics, Fisk University, Nashville, Tennessee 37208, U.S.A.
W. E. Collins
Affiliation:
Center for Photonic Materials and Devices,Department of Physics, Fisk University, Nashville, Tennessee 37208, U.S.A.
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Abstract

Gold and platinum metal contacts have been deposited on the cleaved and etched surfaces of ZnCdTe single crystals by “electroless” method from AuCl3, PtCl2 and PtCl4 aqueous solutions with different concentrations and deposition times. Atomic Force Microscopy (AFM) has been employed to reveal the surface morphology of metal contacts and it was found that for AuCl3 and PtCl2 solutions, the surface morphology and grain size are similar, and uniformly distributed. The surface morphology on contact made from PtCl4 shows a larger grain size, higher roughness and non-uniformity. The effect of different heat treatments to the surface morphology will be discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 378: Symposium B – Defect and Impurity-Engineered Semiconductors and Devices , 1995 , 841
Copyright
Copyright © Materials Research Society 1995

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