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Highly in-plane anisotropic 2D ReSe2 for polarization-sensitive photodetectors.
- Source :
-
Physica B . Aug2023, Vol. 663, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Here we report a new member of in-plane anisotropic 2D materials Rhenium Diselenide (ReSe 2) which holds a stable distorted 1 T' phase with its relatively narrow bandgap to explore the in-plane anisotropic structural, electrical, and optical properties. The proposed polarization-sensitive photodetectors based on few-layer ReSe 2 provides highly anisotropic photodetection behavior with linearly dichroic ratio up to ≈2.62 under 808 nm illumination. We measured carrier transport in space and time by mapping carrier density in a ReSe 2 plate using transient absorption microscopy. These results directly determined the carrier diffusion coefficients of about 4100 cm2 s-1 and 2900 cm2 s-1 along the armchair and zigzag directions, respectively, providing fundamental parameters to better understand the anisotropy of ReSe 2 and promote future 2D optoelectronic applications in polarization-sensitive detection. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHOTODETECTORS
*CARRIER density
*DIFFUSION coefficients
*OPTICAL properties
Subjects
Details
- Language :
- English
- ISSN :
- 09214526
- Volume :
- 663
- Database :
- Academic Search Index
- Journal :
- Physica B
- Publication Type :
- Academic Journal
- Accession number :
- 164133977
- Full Text :
- https://doi.org/10.1016/j.physb.2023.415000