Effect of photonic processing of thin rutile films with cadmium sulphide quantum dots on forming the conditions for separating the nonequilibrium charge carriers

Kushchev, S.B., Latyshev, A.N., Leonova, L.Y., Ovchinnikov, O.V., Popova, E.V., Smirnov, S.M.

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For Russian citation (Opticheskii Zhurnal):

Кущев С.Б., Латышев А.Н., Леонова Л.Ю., Попова Е.В., Овчинников О.В., Смирнов С.М. Влияние фотонной обработки тонких плёнок рутила с квантовыми точками сульфида кадмия на формирование условий для разделения неравновесных носителей заряда // Оптический журнал. 2020. Т. 87. № 2. С. 69–75. http://doi.org/10.17586/1023-5086-2020-87-02-69-75

Kushchev S.B., Latyshev A.N., Leonova L.Yu., Popova E.V., Ovchinnikov O.V., Smirnov M.S. Effect of photonic processing of thin rutile films with cadmium sulphide quantum dots on forming the conditions for separating the nonequilibrium charge carriers [in Russian] // Opticheskii Zhurnal. 2020. V. 87. № 2. P. 69–75. http://doi.org/10.17586/1023-5086-2020-87-02-69-75

For citation (Journal of Optical Technology):

S. B. Kushchev, A. N. Latyshev, L. Yu. Leonova, E. V. Popova, O. V. Ovchinnikov, and M. S. Smirnov, "Effect of photonic processing of thin rutile films with cadmium sulphide quantum dots on forming the conditions for separating the nonequilibrium charge carriers," Journal of Optical Technology. 87(2), 121-126 (2020). https://doi.org/10.1364/JOT.87.000121

Abstract:

TiO₂/QDCdS heterostructure was synthesized by depositing preliminarily prepared cadmium sulphide (CdS) quantum dots onto microcrystalline rutile films and then their absorption and luminescence spectra were studied. It was observed that photon processing of the TiO₂/QDCdS heterostructure with high-power light fluxes of xenon flash lamps contributes to the generation of the conditions necessary for the separation of nonequilibrium charge carriers.

Keywords:

titanium dioxide, rutile, nanocrystal films, colloidal quantum dots, cadmium sulphide, heterosystem, optical absorption spectra, size effect, luminescence

Acknowledgements:

The authors are grateful to Academician V. M. Ievlev for participating in the discussion of the results and providing valuable comments.

OCIS codes: 300.6170, 310.6860, 160.4236, 160.6000

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