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Synthesis, structural, optical and Raman studies of pure and lanthanum doped ZnSe nanoparticles
Kumar P.6; Singh J.6; Pandey M.K.2; Jeyanthi C.E.4; Siddheswaran R.1; Paulraj M.1; Hui K.N.5; Hui K.S.3
2014
Source PublicationMaterials Research Bulletin
ISSN00255408
Volume49Issue:1Pages:144-150
AbstractIn this work, a simple, effective and reproducible chemical synthetic route for the production of high-quality, pure ZnSe nanoparticles (NPs), and lanthanum-doped ZnSe (ZnSe:La) NPs is presented. The wide bandgap, luminescent pure ZnSe and ZnSe:La NPs has been synthesized at a low temperature (100 C) in a single template-free step. The size and optical bandgap of the NPs was analyzed from powder X-ray diffraction (XRD), UV-visible (UV-vis) spectroscopy, transmission electron microscopy (TEM), and high resolution transmission electron microscopy (HRTEM). A broad photoluminescence (PL) emission across the visible spectrum has been demonstrated by a systematic blue-shift in emission due to the formation of small nanoparticles. Here, contribution to emission intensity from surface states of NPs increases with La doping. TEM data revealed that the average size of ZnSe and ZnSe:La NPs is 14 and 8 nm, respectively. On the other hand, band gap energy E of ZnSe and ZnSe:La NPs were found to be 3.59 eV and 3.65 eV, respectively. Results showed that hydrazine hydrate played multiple roles in the formation of ZnSe and ZnSe:La NPs. A possible reaction mechanism for the growth of NPs is also discussed. © 2013 Elsevier Ltd. All rights reserved.
KeywordA. Inorganic compounds A. Semiconductors B. Chemical synthesis B. Optical properties C. X-ray diffraction D. Crystal structure
DOI10.1016/j.materresbull.2013.08.060
URLView the original
Language英語
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Cited Times [WOS]:14   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.University of Concepcion
2.Academia Sinica, Institute of Atomic and Molecular Sciences
3.Hanyang University
4.Bharathiar University
5.Pusan National University
6.Banaras Hindu University
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GB/T 7714
Kumar P.,Singh J.,Pandey M.K.,et al. Synthesis, structural, optical and Raman studies of pure and lanthanum doped ZnSe nanoparticles[J]. Materials Research Bulletin,2014,49(1):144-150.
APA Kumar P..,Singh J..,Pandey M.K..,Jeyanthi C.E..,Siddheswaran R..,...&Hui K.S..(2014).Synthesis, structural, optical and Raman studies of pure and lanthanum doped ZnSe nanoparticles.Materials Research Bulletin,49(1),144-150.
MLA Kumar P.,et al."Synthesis, structural, optical and Raman studies of pure and lanthanum doped ZnSe nanoparticles".Materials Research Bulletin 49.1(2014):144-150.
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