УДК: 661.143, 544.22

Luminescence of ZnS:Cu particles modified by shungite nanocarbon

Sychev, M.M., Myakin, S.V., Ogurtsov, K.A., Rozhkova, N.N., Vasina, E.S., Matveychikova, P.V., Belyaev, V.V.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Сычев М.М., Мякин С.В., Огурцов К.А., Рожкова Н.Н., Васина Е.С., Матвейчикова П.В., Беляев В.В. Люминесценция частиц ZnS:Cu, модифицированных шунгитовым наноуглеродом // Оптический журнал. 2017. Т. 84. № 1. С. 69–73.

Sychev M.M., Myakin S.V., Ogurtsov K.A., Rozhkova N.N., Vasina E.S., Matveychikova P.V., Belyaev V.V. Luminescence of ZnS:Cu particles modified by shungite nanocarbon [in Russian] // Opticheskii Zhurnal. 2017. V. 84. № 1. P. 69–73.

For citation (Journal of Optical Technology):

M. M. Sychev, S. V. Myakin, K. A. Ogurtsov, N. N. Rozhkova, E. S. Vasina, P. V. Matveĭchikova, and V. V. Belyaev, "Luminescence of ZnS:Cu particles modified by shungite nanocarbon," Journal of Optical Technology. 84(1), 49-52 (2017). https://doi.org/10.1364/JOT.84.000049

Abstract:

This paper presents a study of the luminescence properties of the commercial phosphor ZnS:Cu modified with nanoparticles of shungite carbon. It shows that even a small amount of the modifying additive causes substantial surface darkening of the phosphor and reduces the reflectance at a wavelength of 490 nm. A number of competing processes are observed: a reduction of the luminance of the electroluminescence because part of the emitted light is absorbed, and an increase of the luminance, probably because the electric field is concentrated on the phosphor particles. Besides altering the luminance, such modification alters the electroluminescence spectra. Modification by shungite-carbon nanoparticles is thus promising from the viewpoint of directed adjustment of the characteristics of commercial phosphors, and optimizing the modification conditions makes it possible to obtain luminescence whose luminance exceeds that in unmodified samples.

Keywords:

zinc sulfide, phosphor, shungite carbon nanoparticles, luminance, luminescence spectra

Acknowledgements:

This work was carried out with the support of the RFBR (14-07-00277) and Program No. 7 of the Chemistry and Materials Science Section of the RAS.

OCIS codes: 160.2540, 160.2100, 160.6000

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