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| Content Provider | PubMed Central |
|---|---|
| Author | Wang, Gang Robert, Cedric Suslu, Aslihan Chen, Bin Yang, Sijie Sarah, Alamdari Gerber, Iann C. Amand, Thierry Marie, Xavier Tongay, Sefaattin Bernhard, Urbaszek |
| Copyright Year | 2015 |
| Abstract | Binary transition metal dichalcogenide monolayers share common properties such as a direct optical bandgap, spin-orbit splittings of hundreds of meV, light–matter interaction dominated by robust excitons and coupled spin-valley states. Here we demonstrate spin-orbit-engineering in Mo(1−x)W x Se2 alloy monolayers for optoelectronics and applications based on spin- and valley-control. We probe the impact of the tuning of the conduction band spin-orbit spin-splitting on the bright versus dark exciton population. For MoSe2 monolayers, the photoluminescence intensity decreases as a function of temperature by an order of magnitude (4–300 K), whereas for WSe2 we measure surprisingly an order of magnitude increase. The ternary material shows a trend between these two extreme behaviours. We also show a non-linear increase of the valley polarization as a function of tungsten concentration, where 40% tungsten incorporation is sufficient to achieve valley polarization as high as in binary WSe2. |
| Related Links | http://dx.doi.org/10.1038/ncomms10110 |
| Starting Page | 10110 |
| File Format | |
| ISSN | 20411723 |
| e-ISSN | 20411723 |
| Journal | Nature Communications |
| Volume Number | 6 |
| Language | English |
| Publisher | Nature Publishing Group |
| Publisher Date | 2015-12-01 |
| Access Restriction | Open |
| Rights Holder | Nature Publishing Group |
| Subject Keyword | Biochemistry, Genetics and Molecular Biology(all) Physics and Astronomy(all) Chemistry(all) Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Physics and Astronomy Biochemistry, Genetics and Molecular Biology |
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