@article{
 title = {Charge photogeneration in few-layer MoS<inf>2</inf>},
 type = {article},
 year = {2015},
 identifiers = {[object Object]},
 keywords = {MoS<inf>2</inf>,charge generation,excitons,femtosecond spectroscopy,transition metal dichalcogenides},
 pages = {3351-3358},
 volume = {25},
 id = {195de586-a7bb-3638-8e15-8baa56635aa9},
 created = {2016-12-03T19:10:20.000Z},
 file_attached = {false},
 profile_id = {b91ccd2b-4d39-34e4-9362-d1940fddcf78},
 group_id = {78478fd0-4e1b-36b3-861f-d56370839b01},
 last_modified = {2016-12-03T19:10:20.000Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {false},
 hidden = {false},
 citation_key = {Borzda2015},
 abstract = {The two-dimensional semiconductor MoS2 in its mono- and few-layer form is expected to have a significant exciton binding energy of several 100 meV, leading to the consensus that excitons are the primary photoexcited species. Nevertheless, even single layers show a strong photovoltaic effect and work as the active material in high sensitivity photodetectors, thus indicating efficient charge carrier photogeneration (CPG). Here we use continuous wave photomodulation spectroscopy to identify the optical signature of long-lived charge carriers and femtosecond pump-probe spectroscopy to follow the CPG dynamics. We find that intitial photoexcitation yields a branching between excitons and charge carriers, followed by excitation energy dependent hot exciton dissociation as an additional CPG mechanism. Based on these findings, we make simple suggestions for the design of more efficient MoS2 photovoltaic and photodetector devices.},
 bibtype = {article},
 author = {Borzda, Tetiana and Gadermaier, Christoph and Vujicic, Natasa and Topolovsek, Peter and Borovsak, Milos and Mertelj, Tomaz and Viola, Daniele and Manzoni, Cristian and Pogna, Eva A A and Brida, Daniele and Antognazza, Maria Rosa and Scotognella, Francesco and Lanzani, Guglielmo and Cerullo, Giulio and Mihailovic, Dragan},
 journal = {Advanced Functional Materials},
 number = {22}
}

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