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Proceedings Paper

Continuous-wave Nd:YAG laser deposition of CdS thin films with cubic phase
Author(s): Xing Wu Wang; D. J. Finnigan
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Paper Abstract

A continuous wave (CW) Nd:YAG laser operating at the fundamental mode of 1.064 micrometers was used to deposit CdS thin films with cubic phase on glass, quartz, NaCl (100), and carbon coated formvar substrates. At substrate temperatures near 200 degree(s)C, the films consisted of a combination of the zincblende (cubic) and wurtzite (hexagonal) phases of CdS. X-ray diffraction patterns of films deposited on each substrate indicate a predominantly cubic structure. Transmission electron microscope further confirmed the presence of the cubic phase. The films had a stoichiometric ratio of 1:1 for Cd:S. The surface of the films were optically smooth. Optical transmission measurements reveal a room temperature absorption edge of 515 nm for the films deposited on glass and quartz substrates. Raman spectra show longitudinal optical (LO) modes at 300 cm-1 (1LO) and 605 cm-1 (2LO), similar to that of the hexagonal film. The transition from predominantly cubic to hexagonal films was estimated to occur near 275 degree(s)C for glass substrates, and 350 degree(s)C for quartz substrates.

Paper Details

Date Published: 24 June 1993
PDF: 12 pages
Proc. SPIE 1856, Laser Radiation Photophysics, (24 June 1993); doi: 10.1117/12.147627
Show Author Affiliations
Xing Wu Wang, Alfred Univ. (United States)
D. J. Finnigan, Alfred Univ. (United States)

Published in SPIE Proceedings Vol. 1856:
Laser Radiation Photophysics
Bodil Braren; Mikhail N. Libenson, Editor(s)

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