Synthesis and Photoluminescence Spectra of the Composite Films with Cadmium Sulfide Nanocrystals

Authors D.V. Korbutyak1, S.V. Tokarev2 , O.M. Shevchuk2 , H.A. Ilchuk2 , V.S. Tokarev2, S.I. Budzulyak1, A.O. Kuryk1

1 V.E. Lashkaryov Institute of semiconductor physics, 41, Nauki Ave., 03028 Kyiv, Ukraine

2 Lviv Polytechnic National University, 12, S. Bandery Str., 79013 Lviv, Ukraine

Issue Volume 5, Year 2013, Number 4
Dates Received 21 June 2013; published online 31 January 2014
Citation D.V. Korbutyak, S.V. Tokarev, O.M. Shevchuk, et al., J. Nano- Electron. Phys. 5 No 4, 04066 (2013)
PACS Number(s) 81.07. ± b, 78.55. ± m, 78.67. ± n
Keywords CdS nanocrystals, Composite film, Photoluminescence spectrum.
Annotation The paper describes the features of the optical properties of the composite films with embedded cadmium sulfide nanocrystals (NC CdS) which have been obtained in situ via sol-gel method. Photoluminescence spectra comprise two areas: the doped due to surface defects at E  1.6-2.3 eV and exciton at E  2.3-3.0 eV. An increase of the precursor Cd(Ас)2∙2H2O concentration in polymer matrix does not bring about automatic increase in the light absorption at max and photoluminescence intensity of the composite film; perhaps this is caused by the formation of less perfect CdS structures in this case.

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