PACS: 81.15.G, 68.55.J, 61.66

Composite film structures containg ZnS, CdS nanoparticles prepared by MOC pyrolysis at low temperatures
G.S. Svechnikov, L.V. Zavyalova, N.N. Roshchina, I.V. Prokopenko, L.I. Berezhinsky, V.S. Khomchenko, O.S. Litvin

V. Lashkaryov Institute of Semiconductors Physics of National Academy of Sciences of Ukraine
41, pr. Nauki, 03028 Kyiv, Ukraine, Phone: +380 (44)265 64 77, (44)265 73 51, (44)265 62 66,
fax: +380 (44)265 83 42, E-mail: vsk@isp.kiev.ua

Abstract. New composite structures containing ZnS, CdS nanoparticles were prepared with bright light-blue colour of a luminescence. The structures were formed by spraying organic solution of zinc or cadmium ditiocarbamate onto substrates at temperatures within the range 40…120°C. It was established that the film emission maximum monotonously shifts into short-wave spectral region at the decreasing substrate temperature: from 590 nm (Ts = 120°C) to 500 nm (Ts = 50°C) for ZnS and from 510 nm (Ts = 120°C) to 450 nm (Ts = 40°C) for CdS. This fact can be explained by the quantum size effect: X-ray analysis has shown that researched films contain crystalline particles of 1…5 nm size.
Keywords: Nanocrystalline, ZnS, CdS, polymeric matrix, MOC pyrolysis, luminescence.
Paper received 12.03.04; accepted for publication 00.00.00.

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