Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 588, Issue -, Pages 127-132Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.11.015
Keywords
Nanostructured materials; Transition metal; Chemical synthesis; Optical properties
Categories
Funding
- Basic Science Research Program [NRF 2011-0010155]
- Priority Research Centers Program [NRF 2010-0029634]
- SRC Research Center for Women's Diseases of Sookmyung Women's University (2006) through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology
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We developed a facile strategy to synthesize transition metal (TM; Ni, Cr, Co, and Ti)-doped ZnSe nano-particles (NPs) in aqueous media using a chemical co-precipitation method. Co-precipitation was performed in the presence of one of four different surfactants, namely mercaptoacetic acid (MAA), 3-mercaptopropionic acid (MPA), thioglycerol (TGC), or (3-mercaptopropyl) trimethoxysilane (MPTMS). Surface morphology, chemical, and crystalline properties of the TM-doped ZnSe NPs were studied by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Optical features were characterized by UV-visible and photoluminescence spectroscopies. The influence of various experimental parameters, including the amount of TM and the ratio of precursors, as well as different types of surfactants on the photoluminescence properties of TM-doped ZnSe NPs was investigated systematically. TM-doped ZnSe NPs were excited in the UV region and exhibited photoluminescence in the visible region. Intensity was affected by the concentration of the TM. The results showed that MPA had a stronger influence on photoluminescence than MAA, TGC, and MPTMS. The photoluminescence intensity of TM-doped ZnSe NPs was 30% higher than that of undoped ZnSe NPs. (C) 2013 Elsevier B. V. All rights reserved.
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