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In-situ Manipulating 2-D Semiconductor Valley-polarizied…
In-situ Manipulating 2-D Semiconductor Valley-polarizied Electroluminescence in Room Temperature
Introduction
TMDC Light Source
Compact
LED
w/o dangling bond
easy for integration
High tunability
Polarization tuning
Voltage tuning
Valley polarization lever
Chiral Structure
High polarization degree
In this study
Electrical-tuning
Valleytronic manipulating
In-situ polarization degree control
High polarization degree in RT
Compact LED
Results & Discussion 2
Luminescence
Linear
PL
Spectra (0 v.s. 90)
DOLP (degree)
Off-resonance spectra
EL
Spectra (0 v.s. 90)
DOLP (degree)
Off-resonance spectra
Circular
PL
Spectra (RH v.s. LH) & DOCP
Off-resonance spectra
EL
Spectra (RH v.s. LH) & DOCP
Off-resonance spectra
Schematic Diagram (explaning PL v.s. EL)
Results & Discussion 3
Lasing Intensity Modulation
V-dependent Modulation
Fig. 3
High speed Modulation
Setup
Supple.
80 MHz Modulation
Fig. 3
120 MHz Modulation
Fig. 3
Continuous Modulation (Stability)
Fig. 3
References Comparison (FOM or Table)
Fig. 5
Eye Diagram
Different frequenct's Diagram
Fig. 4
V-dependent Diagram
Fig. 4
Eye Diagram analysis (BER...)
Fig. 4
Gain-tuning modulation principle schematic
Fig. 3
V-control Intensity Rise/Fall time
Supple.
Results & Discussion 1
LED Device
Device structure introduction
Device Schematic
Fig. 1
LED Structure
SEM image
Fig. 1
OM image
Fig. 1
Monolayer WSe2 Identification
Raman
Supple.
PL
Supple.
Absorption
Supple.
I-V curve
Supple.
Fabrication
Method
Plasmonic structure indentification
Linear structure
SEM image
Fig. 1
Extinction spectrum
Diameter tuning
Exp.
Sim.
Linear-polarized
horizontal v.s. vertical
Extinc.% v.s. degree
Chiral structure
SEM image
Fig. 1
Extinction spectrum
Diameter tuning
Exp.
Sim.
Circular-polarized
RHCP v.s. LHCP
Simulation mode profile
RHCP v.s. LHCP