Structural and optical studies of Zn1−xCdxS quantum dots synthesized by in situ technique in PVA matrix

Vineeshkumar, T.V.; Raj, Rithesh D.; Prasanth, S.; Unnikrishnan, N.V.; Philip, Reji; Sudarsanakumar, C.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6179

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DC Field	Value	Language
dc.contributor.author	Vineeshkumar, T.V.	-
dc.contributor.author	Raj, Rithesh D.	-
dc.contributor.author	Prasanth, S.	-
dc.contributor.author	Unnikrishnan, N.V.	-
dc.contributor.author	Philip, Reji	-
dc.contributor.author	Sudarsanakumar, C.	-
dc.date.accessioned	2015-02-22T13:37:35Z	-
dc.date.available	2015-02-22T13:37:35Z	-
dc.date.issued	2014-11	-
dc.identifier.citation	Optical Materials, 2014, Vol. 37, p 439-445	en
dc.identifier.issn	0925-3467	-
dc.identifier.uri	http://hdl.handle.net/2289/6179	-
dc.description	Restricted Access.	en
dc.description.abstract	Zn1−xCdxS (x = 0.1, 0.2, 0.3, 0.4, 0.5 … 0.9) quantum dots were synthesized successfully using novel in situ technique in polyvinyl alcohol (PVA) matrix. The PVA acted as a capping agent as well as a reducing agent. The structural and optical properties of the samples were studied by X-ray diffraction (XRD), TEM analysis, UV–Visible absorption and photoluminescence spectroscopy (PL). X-ray diffraction patterns revealed cubic zinc blende phase of the samples with lattice parameter in the range 5.47–5.75 Å. Optical band gap values were calculated from the absorption spectra and observed a decreasing band gap with increasing Cd:Zn ratio. The Raman spectra were recorded using conventional Micro Raman technique. Photoluminescence spectra showed asymmetric broad emission with multiple maxima. The concentration dependent quenching of PL intensity with increasing Cd:Zn ratio was observed along with a red shift. The nonlinear optical (NLO) and limiting properties were studied using Z-scan technique.	en
dc.language.iso	en	en
dc.publisher	2013 Elsevier B. V.	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2014OptMa..37..439V	en
dc.relation.uri	http://dx.doi.org/10.1016/j.optmat.2014.06.037	en
dc.rights	2014 Elsevier B. V.	en
dc.title	Structural and optical studies of Zn1−xCdxS quantum dots synthesized by in situ technique in PVA matrix	en
dc.type	Article	en
Appears in Collections:	Research Papers (LAMP)

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