Effect of Electron-Acceptor Compounds on the Laser Burning of Photoluminescence of Hybrid Si/SiOx Silicon Nanoparticles


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The role of the environment on the dynamics of the photoburning processes of the red–infrared photoluminescence (PL) of hybrid silicon nanoparticles (npSi/SiOx) under the influence of continuous laser radiation (410 and 635 nm) in different media (in a helium or oxygen atmosphere at low pressures, in carbon tetrachloride solutions, in polymer matrices, and in vacuum) is studied. It is established that the presence of electron-acceptor molecules or compounds in the components of the medium increases the rate of luminescence photoburning (photosensitivity) of npSi/SiOx. The lowest photosensitivity is observed when the nanoparticles are in vacuum or in a helium atmosphere. It is shown that the photoburning rate depends on the wavelength of the exciting radiation. A mechanism of photosensitivity of npSi/SiOx is proposed which is based on recharging the centers involved in the photoluminescence process and located in the oxide shell or at the core–shell interface.

作者简介

A. Rybaltovskii

Skobel’tsyn Research Institute of Nuclear Physics

编辑信件的主要联系方式.
Email: alex19422008@rambler.ru
俄罗斯联邦, Moscow, 119991

Yu. Zavorotnyi

Skobel’tsyn Research Institute of Nuclear Physics

Email: alex19422008@rambler.ru
俄罗斯联邦, Moscow, 119991

A. Ishchenko

Lomonosov Institute of Fine Chemical Technologies

Email: alex19422008@rambler.ru
俄罗斯联邦, Moscow, 119571

A. Parshutkin

Lomonosov Institute of Fine Chemical Technologies

Email: alex19422008@rambler.ru
俄罗斯联邦, Moscow, 119571

V. Radtsig

Semenov Institute of Chemical Physics

Email: alex19422008@rambler.ru
俄罗斯联邦, Moscow, 119991

A. Sviridov

Federal Research Center “Crystallography and Photonics”

Email: alex19422008@rambler.ru
俄罗斯联邦, Moscow, 119333

E. Feklichev

Chemistry Faculty

Email: alex19422008@rambler.ru
俄罗斯联邦, Moscow, 119991

V. Bagratashvili

Federal Research Center “Crystallography and Photonics”; Chemistry Faculty

Email: alex19422008@rambler.ru
俄罗斯联邦, Moscow, 119333; Moscow, 119991

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