Review on carrier multiplication in graphene
Journal article, 2016
The remarkable gapless and linear band structure of graphene opens up new carrier relaxation channels bridging the valence and the conduction band. These Auger scattering processes change the number of charge carriers and can give rise to a significant multiplication of optically excited carriers in graphene. This is an ultrafast many-particle phenomenon that is of great interest both for fundamental many-particle physics as well as technological applications. Here, we review the research on carrier multiplication in graphene and Landau-quantized graphene including theoretical modeling and experimental demonstration. Illustration of the electronic band structure of graphene including Auger scattering channels that can lead to a carrier multiplication (CM). Figure adapted from Ref. [2].
Physics
multiple exciton generation
doping
carbon nanotube photodiodes
Landau quantization
quantization
impact excitation
solar-cells
dynamics
carrier multiplication
efficiency
graphene
Author
Ermin Malic
Chalmers, Physics, Condensed Matter Theory
T. Winzer
Technische Universitat Berlin
Florian Wendler
Technische Universitat Berlin
A. Knorr
Technische Universitat Berlin
Physica Status Solidi (B): Basic Research
0370-1972 (ISSN) 1521-3951 (eISSN)
Vol. 253 12 2303-2310Subject Categories (SSIF 2011)
Condensed Matter Physics
DOI
10.1002/pssb.201600416