Pregled bibliografske jedinice broj: 658736
Charge carrier photogeneration in single- and few-layer MoS2
Charge carrier photogeneration in single- and few-layer MoS2 // SLONANO Book of Abstracts / Mihailović, Dragan ; Pintar, Albin ; Arčon, Denis ; Hassanien, Abdou (ur.).
Ljubljana, 2013. str. 69-69 (poster, nije recenziran, sažetak, znanstveni)
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Naslov
Charge carrier photogeneration in single- and few-layer MoS2
Autori
Gadermaier, Christoph ; Borzda, Tetiana ; Vujičić, Nataša ; Topolovšek, Peter ; Mertelj, Tomaž ; Viola, Danielle ; Cerullo, Giulio ; Mihailović, Dragan
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
SLONANO Book of Abstracts
/ Mihailović, Dragan ; Pintar, Albin ; Arčon, Denis ; Hassanien, Abdou - Ljubljana, 2013, 69-69
Skup
SLONANO
Mjesto i datum
Ljubljana, Slovenija, 23.10.2013. - 25.10.2013
Vrsta sudjelovanja
Poster
Vrsta recenzije
Nije recenziran
Ključne riječi
MoS2; charge transfer; photoexcitation; ultrafast spectroscopy
Sažetak
The primary photoexcitations in MoS2 are excitons with a binding energy close to 0.5 eV or even higher in single flakes. Their relaxation behavior has been described as the interplay of trapping, phonon-assisted interband transitions and radiative recombination. On the other hand, the observation of photocurrents and a photovoltaic effect suggests that photoexcitation of MoS2 also generate charge carriers. Using method of ultrafast spectroscopy we show the photogeneration of long-lived charge carriers in single- and few-layer flakes of MoS2 dispersed in an inert PMMA matrix. Charges are formed from both the A and B excitons with a time constant of approximately 1 ps during the fastest observed exciton relaxation process.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
