Ammonia-free chemical bath deposition of CdS films: tailoring the nanocrystal sizes

We report on the control of nanocrystal sizes in CdS nanocrystalline films prepared by ammonia-free chemical bath deposition technique. We studied the effect of deposition duration, bath temperature during deposition, and post-preparation heat treatment. Nanocrystals (NCs) with radii from 2.6 nm to...

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Bibliographic Details
Published in:Journal of crystal growth 2002-05, Vol.240 (3), p.484-488
Main Authors: NEMEC, P, NEMEC, I, NAHALKOVA, P, KNIZEK, K, MALY, P
Format: Article
Language:English
Subjects:
A1. Crystal structure
A3. Chemical bath deposition
B2. Semiconductor nanocrystals
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Liquid phase epitaxy
deposition from liquid phases (melts, solutions, and surface layers on liquids)
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Nanoscale materials and structures: fabrication and characterization
Physics
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Summary:We report on the control of nanocrystal sizes in CdS nanocrystalline films prepared by ammonia-free chemical bath deposition technique. We studied the effect of deposition duration, bath temperature during deposition, and post-preparation heat treatment. Nanocrystals (NCs) with radii from 2.6 nm to more than 10 nm were prepared and characterised by transmission electron microscopy, X-ray diffraction, and optical photoluminescence and absorption spectroscopy. We observed cubic to hexagonal phase transition for large NCs prepared by the heat treatment.
ISSN:0022-0248
1873-5002
DOI:10.1016/S0022-0248(02)00930-2