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ISSN: 1023-5086

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ISSN: 1023-5086

Scientific and technical

Opticheskii Zhurnal

A full-text English translation of the journal is published by Optica Publishing Group under the title “Journal of Optical Technology”

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DOI: 10.17586/1023-5086-2023-90-04-57-67

УДК: 621.315.592

Laser-induced improvement of the photoelectric characteristics of ZnO:Ag thin films

Gresko, V.R., Smirnova, V.V., Sergeev, M.M., Pushkareva, A.E., Dolgopolov, A.G., Sokura, L.A., Bryukhanova, V.V.

Full text on elibrary.ru

For Russian citation (Opticheskii Zhurnal):

Гресько В.Р., Смирнова В.В., Сергеев М.М., Пушкарева А.Е., Долгополов А.Д., Сокура Л.А., Брюханова В.В. Лазерно-индуцированное улучшение фотоэлектрических характеристик тонких плёнок оксида цинка ZnO с наночастицами серебра Ag // Оптический журнал. 2023. Т. 90. № 4. С. 57–67. http://doi.org/10.17586/1023-5086-2023-90-04-57-67

 

Gresko V.R., Smirnova V.V., Sergeev M.M., Pushkareva A.E., Dolgopolov A.D., Sokura L.A., Bryukhanov V.V. Laser-induced improvement of the photoelectric characteristics of ZnO:Ag thin films [ In Russian] // Opticheskii Zhurnal. 2023. V. 90. № 4. P. 57–67. http://doi.org/10.17586/1023-5086-2023-90-04-57-67

For citation (Journal of Optical Technology):

Test

Abstract:

Subject of study. The paper considers the results of studies of the influence of the power density of continuous wave laser radiation on the optical and electrical characteristics of ZnO thin films with silver nanoparticles. Aim of study. Improving the photoelectric characteristics of ZnO:Ag films by laser treatment to increase the efficiency of ultraviolet radiation’s photodetection. Method. Modification of the properties of ZnO:Ag films was carried out using focused radiation with a wavelength of 405 nm in the scanning mode. The films were examined using optical and electron microscopy. Electrical resistance, dark current, and photocurrent arising from exposure to radiation with a wavelength of 343 nm were measured using a multimeter. Main results. It was found that the ratio of photocurrent to dark current after exposure to radiation with a power density of 16 W/cm2 increased from 4.8 to 7.4. The plasmon characteristics of the composite film changed, the plasmon resonance peak shifted between 580 nm and 480 nm with increasing power density. The chemical composition of the film changed insignificantly as a result of laser exposure. In this case, as the power density increased, the film acquired a porous structure. Practical significance. The results obtained can be used to improve the efficiency of ultraviolet laser or solar radiation photodetectors based on ZnO:Ag films.

 

Acknowledgment: the work was carried out at the expense of a grant from the Russian Science Foundation (Project № 19­79­10208).

Keywords:

ZnO thin films, silver nanoparticles, photosensitivity, laser action, photodetection

OCIS codes: 160.5140.

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