Upload
giuseppe-iannaccone
View
9.576
Download
1
Tags:
Embed Size (px)
DESCRIPTION
My Presentation at the Marie-Curie Conference in Florence, 25-26 Novembre 2013. It was a short presentation given to a general audience of researchers and Marie-Curie fellows in all disciplines (from Scholars in Humanities to Medical Doctors). From blog post on http://www.iannaccone.org/?p=2287
Citation preview
Graphene and 2D electronicsGiuseppe Iannaccone - Università di
Pisa
Semiconductor electronics1947 - transistor
Semiconductor electronics1947 - transistor
1961- first chip
Semiconductor electronics1947 - transistor
1961- first chip
2012 Intel Core i73B transistors – 22 nm
Nanotransitors are smaller than
a virus
Why do we need all these transistors?
Why do we need all these transistors?
Atari PONG (1976)
3000 transistors
Why do we need all these transistors?
Atari PONG (1976)
3000 transistors
FIFA 14(2013)
500+ milions transisors
Not your dad’s transistor(neither your elder brother’s one)
Not your dad’s transistor(neither your elder brother’s one)
2001130 nmSilicon
SiO2 – poly gatePlanar [2D]
Not your dad’s transistor(neither your elder brother’s one)
2001130 nmSilicon
SiO2 – poly gatePlanar [2D]
201122 nm
Strained silicon/GeHigh K/Metal gate
3D
Not your dad’s transistor(neither your elder brother’s one)
2001130 nmSilicon
SiO2 – poly gatePlanar [2D]
201122 nm
Strained silicon/GeHigh K/Metal gate
3D
Graphene(Manchester UK 2004)
Graphene is just one atomic layer of graphite
Can it be a “new” material ?
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”
A material with exceptional properties
•Stable in single monolayer form
•A truly 2D material (as thin as physically possible)
A material with exceptional properties
•Stable in single monolayer form
•A truly 2D material (as thin as physically possible)
•Excellent electrical conductor (up to 1000x Si)
•Excellent thermal conductor
A material with exceptional properties
•Stable in single monolayer form
•A truly 2D material (as thin as physically possible)
•Excellent electrical conductor (up to 1000x Si)
•Excellent thermal conductor
•Transparent and flexible
•Exceptionally Strong (300x Steel)
Graphene in Electronics?Problem:
Graphene has a zero energy gap
Transistors cannot be switched off
Rules of the gameIncrease gap and fabricate transistors, butkeep high mobility and reproducibility
20
Other 2D Materials
Boron NidrideMolybdenum disulfide
Et cetera …
Our specialty: Early assessment of device
potentialNanoTCAD VIDES
3D atomistic device simulator
Released as open source as a python module at http://vides.nanotcad.com
400+ downloads, 60+ papers
A long story started from FP5 NanoTCAD Project (1999)– now G. Fiori (UniPi) lead developer]
“This won’t work. This neither.
Try instead this”
Lateral heterostructure FETG. Fiori, G. IannacconeInternational PCT – ACS NANO 2012 2
4
Lateral G-BN Heterostructures
25
M.P. Levendorf Nature 2012(Cornell)
Europe’s bet on graphene
Thanks
Funding:
FP7 GRADE
FP7 GONEXTS
ESF DEWINT
FP7 GRAND
FP7 NANOSIL
MIUR GRANFET
…
Coworkers:Gianluca FioriMassimo MacucciBruno PellegriniPaolo MarconciniDemetrio LogotetaQin ZhangRavinder PawarAlessandro BettiSamantha BruzzoneMartina CheliPaolo Michetti