DOI: 10.1002/adfm.201500709. Charge Photogeneration in Few‐Layer MoS<sub>2</sub>

Charge Photogeneration in Few‐Layer MoS2

10.1002/adfm.201500709

Crossref journal-article

Wiley

Advanced Functional Materials (311)

Abstract

The 2D semiconductor MoS2 in its mono‐ and few‐layer form is expected to have a significant exciton binding energy of several 100 meV, suggesting excitons as 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. Here, modulation spectroscopy in the sub‐ps and ms time scales is used to study the photoexcitation dynamics in few‐layer MoS2. The results suggest that the primary photoexcitations are excitons that efficiently dissociate into charges with a characteristic time of 700 fs. Based on these findings, simple suggestions for the design of efficient MoS2 photovoltaic and photodetector devices are made.

Bibliography

Borzda, T., Gadermaier, C., Vujicic, N., Topolovsek, P., Borovsak, M., Mertelj, T., Viola, D., Manzoni, C., Pogna, E. A. A., Brida, D., Antognazza, M. R., Scotognella, F., Lanzani, G., Cerullo, G., & Mihailovic, D. (2015). Charge Photogeneration in FewâLayer MoS2. Advanced Functional Materials, 25(22), 3351â3358. Portico.

Authors 15

Tetiana Borzda (first)
Christoph Gadermaier (additional)
Natasa Vujicic (additional)
Peter Topolovsek (additional)
Milos Borovsak (additional)
Tomaz Mertelj (additional)
Daniele Viola (additional)
Cristian Manzoni (additional)
Eva A. A. Pogna (additional)
Daniele Brida (additional)
Maria Rosa Antognazza (additional)
Francesco Scotognella (additional)
Guglielmo Lanzani (additional)
Giulio Cerullo (additional)
Dragan Mihailovic (additional)

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{'key': 'e_1_2_6_51_1', 'first-page': '011056', 'volume': '4', 'author': 'Gadermaier C.', 'year': '2014', 'journal-title': 'Phys. Rev. X'} / Phys. Rev. X by Gadermaier C. (2014)
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Dates

Type	When
Created	10 years, 4 months ago (April 28, 2015, 7:45 a.m.)
Deposited	1 year, 10 months ago (Oct. 6, 2023, 5:39 a.m.)
Indexed	1 week ago (Aug. 23, 2025, 9:42 p.m.)
Issued	10 years, 4 months ago (April 28, 2015)
Published	10 years, 4 months ago (April 28, 2015)
Published Online	10 years, 4 months ago (April 28, 2015)
Published Print	10 years, 2 months ago (June 1, 2015)

Funders 0

None

BibTeX

@article{Borzda_2015, title={Charge Photogeneration in Few‐Layer MoS2}, volume={25}, ISSN={1616-3028}, url={http://dx.doi.org/10.1002/adfm.201500709}, DOI={10.1002/adfm.201500709}, number={22}, journal={Advanced Functional Materials}, publisher={Wiley}, 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}, year={2015}, month=apr, pages={3351–3358} }

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