Semiconductor Physics, Quantum Electronics & Optoelectronics. 2014. V. 17, N 3. P. 222-226.
https://doi.org/10.15407/spqeo17.03.222

                                                                 

Nucleation and growth kinetics of colloidal nanoparticles CdS:Mn in aqueous solution of polyvinyl alcohol
G.Yu. Rudko1 , V.I. Fediv2 , A.I. Savchuk3 , E.G. Gule1 , I.P. Vorona1 , V.V. Nosenko1

1V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine,
45, prospect Nauky, 03028 Kyiv, Ukraine, e-mail: g.yu.rudko@gmail.com
2Bukovinian State Medical University, Department of Biophysics and Medical Informatics, 42, Kobylianska str., 58000 Chernivtsi, Ukraine,
3Chernivtsi National University, 2, Kotsyubynsky str., 58012 Chernivtsi, Ukraine

Abstract. Colloidal undoped CdS and doped CdS:Mn nanoparticles were synthesized in the solution of polyvinyl alcohol polymer, and the process of nanoparticles growth was monitored by optical absorption measurements. The inclusion of Mn2+ impurity was checked by electron paramagnetic resonance measurements. It is shown that the core of CdS:Mn nanoparticle is undoped. The results obtained demonstrated that the rate of the band gap value decrease during nanoparticles growth is slower for the Mn-doped nanoparticles as compared to the undoped ones. This effect was ascribed to the inhibition of nanoparticles growth in the solution containing manganese salt. The model of the adsorptive doping of CdS NPs with manganese was proposed.

Keywords:colloidal synthesis, nanoparticles, doping, CdS:Mn.

Manuscript received 28.03.14; revised version received 09.07.14; accepted for publication 16.09.14; published online 30.09.14.

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