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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S3 — May. 5, 2014
  • pp: A986–A991

Post-growth CdCl2 treatment on CdTe thin films grown on graphene layers using a close-spaced sublimation method

Younghun Jung, Gwangseok Yang, Seungju Chun, Donghwan Kim, and Jihyun Kim  »View Author Affiliations


Optics Express, Vol. 22, Issue S3, pp. A986-A991 (2014)
http://dx.doi.org/10.1364/OE.22.00A986


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Abstract

We investigated the morphological, structural and optical properties of CdCl2-treated cadmium telluride (CdTe) thin films deposited on defective graphene using a close-spaced sublimation (CSS) system. Heat treatment in the presence of CdCl2 caused recrystallization of CSS-grown CdTe over the as-deposited structures. The preferential (111) orientation of as-deposited CdTe films was randomized after post-growth CdCl2 treatment. New small grains (bumps) on the surface of CdCl2-treated CdTe films were ascribed to nucleation of the CdTe grains during the CdCl2 treatment. The properties of as-deposited and CdCl2-treated CdTe films were characterized by room temperature micro-photoluminescence, micro-Raman spectroscopy, scanning electron microscopy, and X-ray diffraction analysis. Our results are useful to demonstrate a substrate configuration CdTe thin film solar cells.

© 2014 Optical Society of America

OCIS Codes
(160.6000) Materials : Semiconductor materials
(250.0250) Optoelectronics : Optoelectronics
(350.6050) Other areas of optics : Solar energy

ToC Category:
Materials

History
Original Manuscript: March 5, 2014
Revised Manuscript: April 9, 2014
Manuscript Accepted: April 12, 2014
Published: April 28, 2014

Citation
Younghun Jung, Gwangseok Yang, Seungju Chun, Donghwan Kim, and Jihyun Kim, "Post-growth CdCl2 treatment on CdTe thin films grown on graphene layers using a close-spaced sublimation method," Opt. Express 22, A986-A991 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-S3-A986


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