Hunting for Monolayer Black Phosphorus with Photoluminescence Microscopy

Monolayer black phosphorus (BP) holds great promise for naturally hyperbolic polaritons and correlated states in rectangular moiré superlattices. However, preparing and identifying high-quality monolayer BP are challenging due to its instability and high transparency, which limits extensive studies....

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Bibliographic Details
Published inPhotonics Vol. 11; no. 9; p. 866
Main Authors Pan, Chenghao, Ma, Yixuan, Wan, Quan, Yu, Boyang, Huang, Shenyang, Yan, Hugen
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2024
Subjects
2D materials
black phosphorus
Chemical vapor deposition
CMOS
Crystal structure
Crystals
Graphene
Industrial applications
infrared
Interferometry
Lasers
Light emitting diodes
Luminescence
Microscope and microscopy
Microscopy
Monolayers
Open source software
optical microscopy
Phosphorus
Photoluminescence
photoluminescence imaging
Photons
Polaritons
Spectrum analysis
Structure
Substrates
Superlattices
China
United States > US
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Summary:Monolayer black phosphorus (BP) holds great promise for naturally hyperbolic polaritons and correlated states in rectangular moiré superlattices. However, preparing and identifying high-quality monolayer BP are challenging due to its instability and high transparency, which limits extensive studies. In this study, we developed a method for rapidly and nondestructively identifying monolayer BP and its crystal orientation simultaneously using modified photoluminescence (PL) microscopy. The optical contrast of monolayer BP has been significantly increased by at least twenty times compared to previous reports, making it visible even on a transparent substrate. The polarization dependence of optical contrast also allows for the in situ determination of crystal orientation. Our study facilitates the identification of monolayer BP, expediting more extensive research on and potential industrial applications of this material.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics11090866