graphene and 2d electronics
TRANSCRIPT
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Graphene and
2D electronicsGiuseppe Iannaccone - Universit di Pisa
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Semiconductor electronics1947 - transistor
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Semiconductor electronics1947 - transistor
1961- first chip
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Semiconductor electronics1947 - transistor
1961- first chip
2012 Intel Core i73B transistors 22 nm
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Nanotransitors are
smaller than a virus
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Why do we need all these
transistors?
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Why do we need all these
transistors?
Atari PONG (1976)3000 transistors
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Why do we need all these
transistors?
Atari PONG (1976)3000 transistors
FIFA 14(2013)
500+ milions transisors
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Not your dads transistor(neither your elder brothers one)
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Not your dads transistor(neither your elder brothers one)
2001
130 nmSilicon
SiO2poly gate
Planar [2D]
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Not your dads transistor(neither your elder brothers one)
2001
130 nmSilicon
SiO2poly gate
Planar [2D]
2011
22 nmStrained silicon/Ge
High K/Metal gate
3D
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Not your dads transistor(neither your elder brothers one)
2001
130 nmSilicon
SiO2poly gate
Planar [2D]
2011
22 nmStrained silicon/Ge
High K/Metal gate
3D
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Graphene(Manchester UK 2004)
h i j t t i l
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raphene is just one atomic laye
of graphite
Can it be a newmaterial ?
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In 2004 A. Geim and K. Novoselov
isolated and characterised graphene at
Manchester Univ.
2010 Nobel Prize for "for
groundbreaking experiments
regarding the two-dimensional
material graphene
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A material with
exceptional properties Stablein single monolayer form
A truly 2D material(as thin as physically possible)
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A material with
exceptional properties Stablein single monolayer form
A truly 2D material(as thin as physically possible)
Excellent electrical conductor (up to 1000x Si)
Excellent thermal conductor
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A material with
exceptional properties Stablein single monolayer form
A truly 2D material(as thin as physically possible)
Excellent electrical conductor (up to 1000x Si)
Excellent thermal conductor
Transparentand flexible
Exceptionally Strong (300x Steel)
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Graphene in Electronics?Problem:
Graphene
has a zero
energy gap
Transistors
cannot be
switched off
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Rules of the gameIncrease gap and fabricate transistors, butkeep high mobility and reproducibility20
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O i lt E l t f
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Our specialty: Early assessment of
device potential
NanoTCAD VIDES
3D atomistic device simulator
Released as open source as a
python moduleathttp://vides.nanotcad.com
400+ downloads, 60+ papers
A long story started from FP5NanoTCAD Project (1999)nowG. Fiori (UniPi) lead developer]
http://vides.nanotcad.com/http://vides.nanotcad.com/ -
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This wont work.
This neither.Try instead this
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Lateral heterostructure FET
G. Fiori, G. Iannaccone
International PCT ACS NANO 20122
Lateral G BN Heterostructures
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Lateral G-BN Heterostructures
2
M.P. Levendorf
Nature 2012(Cornell)
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Europes bet on graphene
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ThanksFunding:
FP7 GRADE
FP7 GONEXTS
ESF DEWINT
FP7 GRAND
FP7 NANOSILMIUR GRANFET
Coworkers:
Gianluca Fiori
Massimo Macucci
Bruno Pellegrini
Paolo Marconcini
Demetrio LogotetaQin Zhang
Ravinder Pawar
Alessandro Betti
Samantha BruzzoneMartina Cheli
Paolo Michetti