Effect of interface quality on photoluminescence of encapsulated MoSe2 monolayers
- 作者: Chernenko A.1, Brichkin A.1, Golyshkov G.1, Shevchun A.1
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隶属关系:
- Institute of Solid State Physics of the Russian Academy of Sciences
- 期: 卷 87, 编号 2 (2023)
- 页面: 189-193
- 栏目: Articles
- URL: https://journals.rcsi.science/0367-6765/article/view/135271
- DOI: https://doi.org/10.31857/S0367676522700351
- EDN: https://elibrary.ru/AEIHOG
- ID: 135271
如何引用文章
详细
Photoluminescence spectra of excitons and trions in MoSe2 monolayers encapsulated with hexagonal boron nitride under nonresonant laser excitation were studied. When the size of the laser excitation spot decreases from 8 to 3 nm, individual peaks with a line width of ~2 meV emerge in the photoluminescence spectra, which were unresolved with a larger spot. Studies of the sample surface using a scanning electron microscope revealed the existence of a large number of features at the interfaces of structures with characteristic sizes ranging from submicron to micron and more. It was expected that the lines appearing in the spectrum at small excitation spot sizes were associated with similar submicron inhomogeneities. A study of a specially made heterostructure covered by a metal mask with holes of 1.6 microns in diameter confirmed this assumption.
作者简介
A. Chernenko
Institute of Solid State Physics of the Russian Academy of Sciences
编辑信件的主要联系方式.
Email: chernen@issp.ac.ru
Russia, 142432, Chernogolovka
A. Brichkin
Institute of Solid State Physics of the Russian Academy of Sciences
Email: chernen@issp.ac.ru
Russia, 142432, Chernogolovka
G. Golyshkov
Institute of Solid State Physics of the Russian Academy of Sciences
Email: chernen@issp.ac.ru
Russia, 142432, Chernogolovka
A. Shevchun
Institute of Solid State Physics of the Russian Academy of Sciences
Email: chernen@issp.ac.ru
Russia, 142432, Chernogolovka
参考
- Ivchenko E.L. Optical spectroscopy of semiconductor nanostructures. Harrow: Alpha Science International Ltd, 2005. 350 p.
- Kolobov A.V., Tominaga J. Two-dimensional transition-metal dichalcogenides. SSMaterials. V. 239. Berlin: Springer, 2016.
- Khestanova E., Guinea F., Fumagalli L. et al. // Nature Commun. 2016. V. 7. Art. No. 12587.
- Geim A.K., Grigorieva I.V. // Nature. 2013. V. 499. P. 419.
- Черненко А.В., Бричкин А.С. // Изв. РАН. Сер. физ. 2021. Т. 85. № 2. С. 245.
- Tyrnina A.V., Bandurin D.A., Khestanova E. et al. // ACS Photonics. 2019. V. 6. No. 2. P. 516.
- Schneider L., Esdaille S., Rhodes D. et al. // Opt. Express. 2019. V. 27. No. 26. Art. No. 37131.
- Dufferwiel S., Schwarz S., Withers F. et al. // Nature Commun. 2015. V. 6. Art. No. 8579.