Exciton Binding Energy of Monolayer WS2

Abstract

The optical properties of monolayer transition metal dichalcogenides (TMDC) feature prominent excitonic natures. Here we report an experimental approach to measuring the exciton binding energy of monolayer WS 2 with linear differential transmission spectroscopy and two-photon photoluminescence excitation spectroscopy (TP-PLE). TP-PLE measurements show the exciton binding energy of 0.71 ± 0.01 eV around K valley in the Brillouin zone.

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References 35

1. 1.

   Brus L. E. Electron-electron and electron-hole interactions in small semiconductor crystallites: The size dependence of the lowest excited electronic state. J. Chem. Phys 80, 4403–4409 (1984 ).

   Not in our library

2. 2.

   Wang F., Dukovic G., Brus L. E. & Heinz T. F. The optical resonances in carbon nanotubes arise from excitons. Science 308, 838–841 (2005 ).

   Not in our library10.1126/science.1110265

3. 3.

   Maultzsch J. et al. Exciton binding energies in carbon nanotubes from two-photon photoluminescence. Phys. Rev. B 72, 241402(R) (2005 ).

   Not in our library

4. 4.

   Cheiwchanchamnangij T. & Lambrecht W. R. L. Quasiparticle band structure calculation of monolayer, bilayer, and bulk MoS2. Phys. Rev. B 85, 205302 (2012 ).

   Not in our library

5. 5.

   Qiu D. Y., da Jornada F. H. & Louie S. G. Optical Spectrum of MoS2: Many-Body Effects and Diversity of Exciton States. Phys. Rev. Lett. 111, 216805 (2013 ).

   Not in our library10.1103/physrevlett.111.216805

6. 6.

   Komsa H.-P. & Krasheninnikov A. Effects of confinement and environment on the electronic structure and exciton binding energy of MoS2 from first principles. Phys. Rev. B 86, 241201(R) (2012 ).

   Not in our library

7. 7.

   Shi H. L., Pan H., Zhang Y. W. & Yakobson B. I. Quasiparticle band structures and optical properties of strained monolayer MoS2 and WS2. Phys. Rev. B 87, 155304 (2013 ).

   Not in our library

8. 8.

   Ramasubramaniam A. Large excitonic effects in monolayers of molybdenum and tungsten dichalcogenides. Phys. Rev. B 86, 115409 (2012 ).

   Not in our library

9. 9.

   Mak K. F., Lee C., Hone J., Shan J. & Heinz T. F. Atomically Thin MoS2: A New Direct-Gap Semiconductor. Phys. Rev. Lett. 105, 136805 (2010 ).

   Not in our library10.1103/physrevlett.105.136805

10. 10.

    Splendiani A. et al. Emerging Photoluminescence in Monolayer MoS2. Nano Lett. 10, 1271–1275 (2010 ).

    Not in our library10.1021/nl903868w

11. 11.

    Zeng H. et al. Optical signature of symmetry variations and spin-valley coupling in atomically thin tungsten dichalcogenides. Sci. Rep. 3, 1608; (2013 ).

    Not in our library10.1038/srep01608

12. 12.

    Zhao W. et al. Evolution of Electronic Structure in Atomically Thin Sheets of WS2 and WSe2. ACS Nano 7, 791–797 (2012 ).

    Not in our library10.1021/nn305275h

13. 13.

    Bordas J. [Some Aspects of Modulation Spectroscop in Optical and electrical properties.] Optical and Electrical Properties, [Lee, P. (ed)][145–229] (Springer Netherlands, 1976 ).

    Not in our library

14. 14.

    Mak K. F. et al. Tightly bound trions in monolayer MoS2. Nat. Mater. 12, 207–211 (2013 ).

    Not in our library10.1038/nmat3505

15. 15.

    Ross J. S. et al. Electrical control of neutral and charged excitons in a monolayer semiconductor. Nat. Commun. 4, 1474 (2013 ).

    Not in our library10.1038/ncomms2498

16. 16.

    Mitioglu A. et al. Optical manipulation of the exciton charge state in single-layer tungsten disulfide. Phys. Rev. B 88, 245403 (2013 ).

    Not in our library

17. 17.

    Thilagam A. Two-dimensional charged-exciton complexes. Phys. Rev. B 55, 7804–7808 (1997 ).

    Not in our library

18. 18.

    Ye Z. et al. Probing excitonic dark states in single-layer tungsten disulphide. Nature 513, 214–218 (2014 ).

    Not in our library10.1038/nature13734

19. 19.

    He K. et al. Tightly Bound Excitons in Monolayer WSe2. Phys. Rev. Lett. 113, 026803 (2014 ).

    Not in our library10.1103/physrevlett.113.026803

20. 20.

    Chernikov A. et al. Exciton Binding Energy and Nonhydrogenic Rydberg Series in Monolayer WS2. Phys. Rev. Lett. 113, 076802 (2014 ).

    Not in our library10.1103/physrevlett.113.076802

21. 21.

    Wang G. et al. Non-linear Optical Spectroscopy of Excited Exciton States for Efficient Valley Coherence Generation in WSe2 Monolayers. arXiv: 1404.0056 (2014 ).

    Not in our library

22. 22.

    Zhang C., Johnson A., Hsu C.-L., Li L.-J. & Shih C.-K. Direct Imaging of the Band Profile in Single Layer MoS2 on Graphite: Quasiparticle Energy Gap, Metallic Edge States and Edge Band Bending. Nano Lett. 14, 2443–2447 (2014 ).

    Not in our library10.1021/nl501133c

23. 23.

    Ugeda M. M. et al. Giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor. Nat. Mater. 13, 1091–1095 (2014 ).

    Not in our library10.1038/nmat4061

24. 24.

    Hanbicki A. T., Currie M., Kioseoglou G., Friedman A. L. & Jonker B. T. Measurement of high exciton binding energy in the monolayer transition-metal dichalcogenides WS2 and WSe2. Solid State Commun. 203, 16–20 (2015 ).

    Not in our library

25. 25.

    Reina A. et al. Transferring and Identification of Single- and Few-Layer Graphene on Arbitrary Substrates. J. Phys. Chem. C 112, 17741–17744 (2008 ).

    Not in our library

26. 26.

    Perebeinos V., Tersoff J. & Avouris P. Electron-Phonon Interaction and Transport in Semiconducting Carbon Nanotubes. Phys. Rev. Lett. 94, 086802 (2005 ).

    Not in our library10.1103/physrevlett.94.086802

27. 27.

    Gong Z. et al. Magnetoelectric effects and valley-controlled spin quantum gates in transition metal dichalcogenide bilayers. Nat. Commun. 4, 2053 (2013 ).

    Not in our library10.1038/ncomms3053

28. 28.

    Tongay S. et al. Broad-Range Modulation of Light Emission in Two-Dimensional Semiconductors by Molecular Physisorption Gating. Nano Lett. 13, 2831–2836 (2013 ).

    Not in our library10.1021/nl4011172

29. 29.

    Xiao D., Liu G.-B., Feng W., Xu X. & Yao W. Coupled Spin and Valley Physics in Monolayers of MoS2 and Other Group-VI Dichalcogenides. Phys. Rev. Lett. 108, 196802 (2012 ).

    Not in our library10.1103/physrevlett.108.196802

30. 30.

    Shimizu A., Ogawa T. & Sakaki H. Two-photon absorption spectra of quasi-low-dimensional exciton systems. Phys. Rev. B 45, 11338 (1992 ).

    Not in our library10.1103/physrevb.45.11338

31. 31.

    Tai K., Mysyrowicz A., Fischer R. J., Slusher R. E. & Cho A. Y. Two-photon absorption spectroscopy in GaAs quantum wells. Phys. Rev. Lett. 62, 1784 (1989 ).

    Not in our library10.1103/physrevlett.62.1784

32. 32.

    Zhang Y. et al. Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2. Nat. Nanotechnol. 9, 111–115 (2013 ).

    Not in our library10.1038/nnano.2013.277

33. 33.

    Zhang C., Wang H., Chan W., Manolatou C. & Rana F. Absorption of light by excitons and trions in monolayers of metal dichalcogenide MoS2:Experiments and theory. Phys. Rev. B 89, 205436 (2014 ).

    Not in our library

34. 34.

    Zhu B., Zeng H., Dai J., Gong Z. & Cui X. Anomalously robust valley polarization and valley coherence in bilayer WS2. Proc. Natl. Acad. Sci. U.S.A. 111, 11606–11611 (2014 ).

    Not in our library10.1073/pnas.1406960111

35. 35.

    Kumar N., Cui Q., Ceballos F., He D., Wang Y. & Zhao H. Exciton-exciton annihilation in MoSe2 monolayers. Phys. Rev. B 89, 125427 (2014 ).

    Not in our library

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