Research / 2020 / Article / Fig 4

Review Article

Polarization-Dependent Optical Properties and Optoelectronic Devices of 2D Materials

Figure 4

Anisotropic PL spectra of typical anisotropic 2D materials. (a) PL spectra of 46 nm BP at various temperatures. (b) Polarization-dependent PL intensity of monolayer BP on PECVD oxide/Au substrate. (c) Measured normalized PL spectra of 60 nm 1T-ReSe2 as a function of polarization angle. Three characteristic peaks are noted as , , and . (d) Polarization-resolved PL spectra for 2D hybrid perovskite with the layer number ranging from to . (e) The PL intensities of GaTe flakes at 1.66 eV and 1.39 eV present highly anisotropic features. Panel (a) is reproduced with permission from Ref. [133], copyright 2019 Nano Letters. Panel (b) is reproduced with permission from Ref. [134], copyright 2016 Advanced Materials. Panel (c) is reproduced with permission from Ref. [136], copyright 2017 Nano Letters. Panel (d) is reproduced with permission from Ref. [138], copyright 2018 Physical Review Letters. Panel (e) is reproduced with permission from Ref. [58], copyright 2017 Advanced Materials.
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