Characteristics of nanocrystalline CdSe films

CdSe films have been pulse electrodeposited on evaporated gold substrates with different duty cycles. The deposition of nanocrystalline films was carried out at 100°C for 10 min with precursors of CdSO 4, SeO 2 and H 2SO 4. TEM studies indicated a crystal size in the range 10–50 nm depending upon th...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2004-01, Vol.81 (1), p.113-118
Main Authors: Murali, K.R, Swaminathan, V, Trivedi, D.C
Format: Article
Language:English
Subjects:
CdSe
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Electrodeposition, electroplating
Exact sciences and technology
Ii-vi semiconductors
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Nanocrystals
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of specific thin films
Physics
Pulse plating
Thin films
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Description
Summary:CdSe films have been pulse electrodeposited on evaporated gold substrates with different duty cycles. The deposition of nanocrystalline films was carried out at 100°C for 10 min with precursors of CdSO 4, SeO 2 and H 2SO 4. TEM studies indicated a crystal size in the range 10–50 nm depending upon the duty cycle. The size of the nanoparticle could be controlled by the pulse parameters. Variation of grain size and band gap with duty cycle are in close agreement with the results reported earlier for the films prepared by electrodeposition and chemical bath deposition. Luminescence studies indicated room temperature emission in the wavelength range 520–410 nm depending on the duty cycle, the excitation wavelength was 570 nm.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2003.08.019