Electrophysical properties of titanium dioxide microscrolls doped with linear carbon chains stabilized by gold nanoparticles
Bukharov D.N.1, Lelekova A.F.1, Samyshkin V.D. 1, Khalimov N.A.1, Eyum Ssaka S.P.1, Kuznetsov A.A.1, Bodunov D.A.1, Abramov A. A. 1, Kucherik A. O. 1
1Stoletovs Vladimir state university, Vladimir, Russia
Email: buharovdn@gmail.com, lelekowa.a@yandex.ru, simplevladius@mail.ru, nazrullonazar2000@gmail.com, nazutojake99@gmail.com, kuznetsovaabus@vk.com, bodunov-2002@mail.ru
A three-stage method for the synthesis of a system of titanium dioxide microswitches witha periodic structure is proposed: deposition of a porous film by laser ablation, alloying it with linear carbon chains stabilized with gold nanoparticles by Spraying-Jet, and formation of microswitches by the blading method. The structure of the obtained samples was studied, the sizes of the forming elements were estimated, their dendritic structure and periodic character were shown. The study of the electrophysical properties of a system of dioxide micro-coils has been carried out titanium doped with carbon chains fixed between gold nanoparticles during the excitation of a photocurrent in them, which demonstrated the photovoltaic properties of the obtained samples. Varying the excitation parameters of the photocurrent (radiation power and irradiation time) made it possible to achieve quantum efficiency up to values of the order of 29% and 46%, respectively. A model in the Schottky diode approximation is proposed to describe the volt-ampere characteristics of the studied microswitch systems and the photocurrent in them with a relative error of no more than 10%. A comparison with similar systems has been carried out, alloyed metal-carbon complexes based on copper and iron nanoparticles, which demonstrated that they can act as an alternative to complexes with gold nanoparticles. Keywords: titanium dioxide microgrids, optical excitation, photocurrent, Schottky diode model.
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