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Excitonic luminescence of the tungsten disulfide crystals intercalated with halogen molecules

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dc.contributor.author DUMCHENKO, Dmitry
dc.date.accessioned 2019-10-21T08:05:50Z
dc.date.available 2019-10-21T08:05:50Z
dc.date.issued 2005
dc.identifier.citation DUMCHENKO, Dmitry. Excitonic luminescence of the tungsten disulfide crystals intercalated with halogen molecules. In: Microelectronics and Computer Science: proc. of the 4th intern. conf., September 15-17, 2005. Chişinău, 2005, vol. 1, pp. 172-175. ISBN 9975-66-038-X. en_US
dc.identifier.isbn 9975-66-038-X
dc.identifier.uri http://repository.utm.md/handle/5014/4894
dc.description.abstract The radiative recombination in the layered disulfide transition metal dichalcogenide compounds 2H-WS2:I2 and 2H-WS2:Br2 has been investigated. It is shown that the strong photoluminescence (PL) of these indirect band gap semiconductors is caused by recombination of excitons bound to neutral centres formed due to the intercalation of halogen molecules Br2 and I2 in the well defined sites of the van der Waals gap. These centres, located at energy ET≈0.1 eV below the conduction band, display the same properties as the isoelectronic traps in GaP, providing the efficient radiative recombination. The temperature dependences of the quenching zero-phonon spectral line intensities are described by a simple expression for both types of crystals. en_US
dc.language.iso en en_US
dc.publisher Technical University of Moldova en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject luminescence en_US
dc.subject excitons en_US
dc.subject disulfide crystals en_US
dc.subject crystals en_US
dc.subject halogen molecules en_US
dc.title Excitonic luminescence of the tungsten disulfide crystals intercalated with halogen molecules en_US
dc.type Article en_US


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