Preparation and characterization of ZnxCd1−xS ternary alloys micro nanostructures grown by thermal evaporation

Ternary alloy zinc cadmium sulfide (ZnxCd1−xS) micro nanostructures were prepared onto various substrates using a thermal evaporation method. Morphological, structural, and optical properties were found to depend on growth temperature and substrate type. ZnxCd1−xS microparticles and flower-like stru...

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Bibliographic Details
Published in:Materials research express 2015-01, Vol.2 (1)
Main Authors: Mahdi, M A, Hassan, Z, Hassan, J J, Ng, S S, Kasim, S J
Format: Article
Language:English
Subjects:
nanostructures
ternary alloys
thermal evaporation
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Summary:Ternary alloy zinc cadmium sulfide (ZnxCd1−xS) micro nanostructures were prepared onto various substrates using a thermal evaporation method. Morphological, structural, and optical properties were found to depend on growth temperature and substrate type. ZnxCd1−xS microparticles and flower-like structures were grown onto ITO-glass and Si(100) substrates at 520 °C. Microrods and nanosheets were formed on alumina and Si(100) substrates at 900 °C, as shown in scanning electron microscopy images. X-ray diffraction patterns confirmed that all prepared samples had a high-quality wurtzite (hexagonal) structure. The prepared samples emitted two bands, namely, a sharp one located in the green region corresponding to the near band edge and a broad band in the yellow region resulting from deep-level transition. The green photoluminescence peak location of the prepared samples blue shifted compared with the optical bandgap of bulk CdS, indicating that the prepared ZnxCd1−xS possessed a greater optical bandgap than that of CdS because of the Zn ratio.
ISSN:2053-1591
DOI:10.1088/2053-1591/2/1/016501