UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2022-07-01 17:05

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Conference: Bucharest University Faculty of Physics 2019 Meeting


Section: Physics and Technology of Renewable and Alternative Energy Sources


Title:
Nanostructured thin films based on tungsten oxides for enviromental applications


Authors:
Eduard SIRJITA(1,2), Florin ANDREI (1), Valentin ION(1), Iulian BOERASU(1), Alina CALUGAR(1,2), Nicu SCARISOREANU(1), Maria DINESCU(1)


*
Affiliation:
1)The National Institute for Lasers, Plasma & Radiation Physics, 409 Atomistilor Street, Magurele, Romanian

2)University of Bucharest, Faculty of Physics, 405 Atomistilor, P.O. BOX MG-11, 077125, Magurele, Romania


E-mail
sirjitaeduard@gmail.com


Keywords:
tungsten oxide, nanostructures, PLD, PEC


Abstract:
The low cost, high efficiency production of hydrogen for energy storage has been a big concern in recent times. Photovoltaic devices can be used in the photovoltaic-electrolysis process to produce hydrogen. In this work, nanostructured metal oxides based on tungsten have been produced as thin films by the pulsed laser deposition method and subsequently studied. Their properties have been tuned by the embedding of nitrogen ions. Parameters such as laser wavelength, gas composition and laser fluence is shown to influence the chemical and physical properties of the film. The photolytic activity of WO3 and WOxNy thin layers in the photochemical composition reaction of the water molecule was pursued.


Acknowledgement:
This work was supported by UEFUSCDI in the frame of the projects: 46PCCDI, 33PCCDI and 15PCCDI