STS observations of deep defects within laser-illuminated graphene/MOVPE-h-BN heterostructures

I. Wlasny , K. Pakula , R. Stępniewski , Włodzimierz Strupiński , Iwona Pasternak , J. M. Baranowski , Andrzej Wysmołek

Abstract

We present the study of metalorganic vapor phase epitaxy hexagonal boron nitride (MOVPE-h-BN) and graphene/MOVPE-h-BN heterostructures under the illumination with monochromatic light. The process of illumination makes the modification visible by both the shifting of Raman lines and the emergence of local electric fields. These changes are related to the modification of the charge state of the deep defect centers and can be used to control other 2D materials within heterostructures. The scanning tunneling spectroscopy study of the graphene/MOVPE-h-BN heterostructure allowed us to observe the defect states associated with the h-BN and evaluate the effect of illumination on them as well as the electronic structure of graphene.

Author I. Wlasny - [University of Warsaw (UW), MNiSW [80]]
I. Wlasny,,
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- Uniwersytet Warszawski
, K. Pakula - [University of Warsaw (UW), MNiSW [80]]
K. Pakula,,
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- Uniwersytet Warszawski
, R. Stępniewski - [University of Warsaw (UW), MNiSW [80]]
R. Stępniewski,,
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- Uniwersytet Warszawski
, Włodzimierz Strupiński (FP / SRD)
Włodzimierz Strupiński,,
- Structural Research Division
, Iwona Pasternak (FP / SRD)
Iwona Pasternak,,
- Structural Research Division
, J. M. Baranowski - [Instytutu Technologii Materialow Elektronicznych w Warszawie]
J. M. Baranowski,,
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, Andrzej Wysmołek - Faculty of Physics [University of Warsaw (UW)] [University of Warsaw (UW), MNiSW [80]]
Andrzej Wysmołek,,
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- Uniwersytet Warszawski
Journal seriesApplied Physics Letters, ISSN 0003-6951, e-ISSN 1077-3118, (N/A 100 pkt)
Issue year2019
Vol114
ASJC Classification3101 Physics and Astronomy (miscellaneous)
DOIDOI:10.1063/1.5081487
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 02-03-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.212; WoS Impact Factor: 2018 = 3.521 (2) - 2018=3.352 (5)
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