Journal article
Optical polarization in mono and bilayer MoS 2
- Abstract:
- Optical anisotropy in monolayer- and bilayer-MoS 2 was investigated by polarization resolved photoluminescence measurements. The photoluminescence of monolayer-MoS 2 is found to be partially polarized at 4.2 K and maintains this polarization characteristic up to room temperature, while the photoluminescence of bilayer-MoS 2 shows no obvious polarization. This polarization anisotropy is due to strain effects at the interface between the MoS 2 layer and the SiO 2 substrate, causing symmetry breaking of the MoS 2 charge distribution. Calculations using density functional theory of the electron density distribution of the monolayer- and bilayer-MoS 2 in the in-plane direction are also presented, giving support to our qualitative analysis.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, pdf, 1.6MB, Terms of use)
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- Publisher copy:
- 10.1016/j.cap.2017.05.009
Authors
- Publisher:
- Elsevier
- Journal:
- Current Applied Physics More from this journal
- Volume:
- 17
- Issue:
- 9
- Pages:
- 1153-1157
- Publication date:
- 2017-05-19
- Acceptance date:
- 2017-05-18
- DOI:
- EISSN:
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1878-1675
- ISSN:
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1567-1739
- Keywords:
- Pubs id:
-
pubs:700666
- UUID:
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uuid:76cd7b4f-f02d-421c-b5f7-74637c6980a3
- Local pid:
-
pubs:700666
- Source identifiers:
-
700666
- Deposit date:
-
2017-09-04
Terms of use
- Copyright holder:
- Elsevier BV
- Copyright date:
- 2017
- Notes:
- © 2017 Elsevier B.V. All rights reserved. This is the accepted manuscript version of the article. The final version is available online from Elsevier at: http://dx.doi.org/10.1016/j.cap.2017.05.009
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