Charge carrier photogeneration in few-layers of MoS2 (CROSBI ID 609375)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa
Podaci o odgovornosti
Borzda, Tetiana ; Gadermeier, Christoph ; Vujičić, Nataša ; Topolovšek, Peter ; Mertelj, Tomaž ; Viola, Danielle ; Cerullo, Giulio ; Mihailović, Dragan
engleski
Charge carrier photogeneration in few-layers of MoS2
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 eff ect suggests that photoexcitation of MoS2 also generate charge carriers. Using method of ultrafast spectroscopy we show the photogeneration of long-lived charge carriers few-layers 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.
MoS2; charge transfer; photoexcitation; ultrafast spectroscopy
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Podaci o prilogu
64-64.
2013.
objavljeno
Podaci o matičnoj publikaciji
Non-equilibrium Dynamics of Correlated Electron Systems: latest theoretical and experimental advances/Book of Abstracts
Jan Kogoj
Ljubljana:
Podaci o skupu
Non-equilibrium Dynamics of Correlated Electron Systems: latest theoretical and experimental advances
predavanje
18.12.2013-20.12.2013
Krvavec, Slovenija