Research / 2020 / Article / Fig 5

Review Article

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

Figure 5

Valley physics and valley polarization PL. (a) Atom structure and valley selection rule of MoS2 monolayer. (b) Valley pseudospin and Berry curvature in honeycomb BN monolayer. (c) Valley polarization PL tailored by molecule charge doping. (d) Valley Zeeman effect of monolayer MoTe2 at low temperature. (e) The energy of Zeeman splitting of various excitons as a function of the magnetic field. (f) Ultrafast laser-induced pseudomagnetic field for the manipulation of valley exciton in WSe2. (g) Spatial PL intensity maps of the σ+ (left) and σ− (right) interlayer exciton under 20 μW excitation. Panel (a) is reproduced with permission from Ref. [151], copyright 2014 Physical Review B. Panel (b) is reproduced with permission from Ref. [152], copyright 2017 Nano Letters. Panel (c) is reproduced with permission from Ref. [156], copyright 2015 Advanced Materials. Panel (d) is reproduced with permission from Ref. [159], copyright 2016 Nano Letters. Panel (e) is reproduced with permission from Ref. [163], copyright 2016 Nano Letters. Panel (f) is reproduced with permission from Ref. [164], copyright 2014 Science. Panel (g) is reproduced with permission from Ref. [167], copyright 2016 Science.
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