Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 509, Issue 24, Pages 6880-6883Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2011.03.171
Keywords
CdS; Nanoparticles; Microwave-assisted Solvothermal; Optical properties
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Funding
- Brazilian agency FAPESP
- Brazilian agency CAPES
- Brazilian agency CNPq
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CdS is one of the most important II-VI semiconductors, with applications in solar cells, optoelectronics and electronic devices. CdS nanoparticles were synthesized via microwave-assisted solvothermal technique. Structural and morphological characterization revealed the presence of crystalline structures presenting single phase with different morphologies such as nanoflowers and nanoplates depending on the solvent used. Optical characterization was made by diffuse reflectance and photoluminescence spectroscopy, revealing the influence of the different solvents on the optical properties due to structural defects generated during synthesis. It is proposed that these defects are related to sulfur vacancies, with higher concentration of defects for the sample synthesized in ethylene glycol in comparison with the one synthesized in ethylene diamine. (C) 2011 Elsevier B.V. All rights reserved.
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