Investor Presentaiton
-6
20x10
Quantum efficiency
10
15
☐
Copper (110)
Graphene
Copper (110)
Experimental demonstration of our concept
on metal photocathodes
Cu (110)
Annealed Cu (110)
Graphene (Cu)
Annealed Graphene (Cu)
Copper (110)
Annealing
Graphene
Copper (110)
0-
3.5
4.0
4.5
Photon energy (eV)
Raman
الممد
5.0
AFM
Intensity (Arb. units)
1500
2000
2500
3000
Raman shift (cm³)
Normalized QE
0.8
10-6 Torr
200 torr
1.0-
0.6
0.4
-0- Cu (110)
-Graphene (Cu)
• Successful electron
transmission through
graphene
• 8 orders of magnitude
improvement in
operating pressure
0
5
10
15
20
F.Liu et al. Appl. Phys. Lett. (2017)
Time (h)
1 μm
7
Height (nm)
1.2.
0.8
0.4-
Height profile
0.0
0.0
0.2
0.5 nm
тил
0.4
Distance (μm)
0.6
.
High crystal quality
graphene
Uniform & atomically
thin graphene
11/8/2021
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