01940nas a2200229   4500008004100000022001400041245011800055210006900173260007300242300001200315490000800327520106900335653002201404653002401426653001701450653002301467653002401490100002401514700001801538700002301556856013101579       2013                        eng d  a0022-231300aOne pot synthesis, growth mechanism and optical properties of Zn1-xCdxSe graded core/shell and alloy nanocrystals0 aOne pot synthesis growth mechanism and optical properties of Zn1  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a154-1590 v1353 a<p>Comparatively higher photoluminescence yield along with robustness of core/shell semiconductor nanocrystals make them attractive candidates for studying intricate quantum size effects. Here, we report, one pot synthesis of Zn1-xCdxSe graded core/shell structures by exploiting change in the reactivity of precursors. Optical and structural measurements indicate formation of graded structure. Growth mechanism probed by inductively coupled plasma atomic emission spectroscopy shows formation of graded core/shell structure, with CdSe rich core and ZnSe rich shell. Annealing these nanocrystals, in chemical bath, leads to diffusion of Cd from core to shell region. Formation of Zn1-xCdxSe alloy is also observed in X-ray photoelectron spectroscopic measurements, confirming the diffusion of Cd from core to shell region. Substantially high photoluminescence quantum efficiency of 60% with narrow line width of about 27 nm, was observed and is attributable to the reduced strain due to graded core/shell structure. (C) 2012 Elsevier B.V. All rights reserved.</p>10aGraded core/shell10aII-VI Semiconductor10aLuminescence10aOptical properties10aSemiconductor alloy1 aSonawane, Kiran, G.1 aPatil, K., R.1 aMahamuni, Shailaja  uhttps://library.ncl.res.in/content/one-pot-synthesis-growth-mechanism-and-optical-properties-zn1-xcdxse-graded-coreshell-and-0