642 citations · 1.9k across the 26 of their papers we have counts for
8 papers · 1 filter
Electrical tunability of terahertz nonlinearity in graphene
Sergey Kovalev, Hassan A. Hafez, Klaas-Jan Tielrooij +15
Graphene is conceivably the most nonlinear optoelectronic material. Its nonlinear optical coefficients in the terahertz (THz) frequency range surpass those of other materials by ma…
Spontaneous Exciton Dissociation in Transition Metal Dichalcogenide Monolayers
Taketo Handa, Madisen A. Holbrook, Nicholas Olsen +8
Since the seminal work on MoS2 monolayers, photoexcitation in atomically-thin transition metal dichalcogenides (TMDCs) has been assumed to result in excitons with large binding ene…
Electron cooling in graphene enhanced by plasmon-hydron resonance
Xiaoqing Yu, Alessandro Principi, Klaas-Jan Tielrooij +2
Evidence is accumulating for the crucial role of a solid's free electrons in the dynamics of solid-liquid interfaces. Liquids induce electronic polarization and drive electric curr…
Hot-Carrier Cooling in High-Quality Graphene is Intrinsically Limited by Optical Phonons
Eva A. A. Pogna, Xiaoyu Jia, Alessandro Principi +20
Many promising optoelectronic devices, such as broadband photodetectors, nonlinear frequency converters, and building blocks for data communication systems, exploit photoexcited ch…
Charge transport mechanism in networks of armchair graphene nanoribbons
Nils Richter, Zongping Chen, Alexander Tries +6
In graphene nanoribbons (GNRs), the lateral confinement of charge carriers opens a band gap, the key feature to enable novel graphene-based electronics. Successful synthesis of GNR…
The ultrafast dynamics and conductivity of photoexcited graphene at different Fermi energies
A. Tomadin, S. M. Hornett, H. I. Wang +10
For many of the envisioned optoelectronic applications of graphene it is crucial to understand the sub-picosecond carrier dynamics immediately following photoexcitation, as well as…
Competing Ultrafast Energy Relaxation Pathways in Photoexcited Graphene
Soeren A. Jensen, Zoltan Mics, Ivan Ivanov +5
For most optoelectronic applications of graphene a thorough understanding of the processes that govern energy relaxation of photoexcited carriers is essential. The ultrafast energy…
Photo-excitation Cascade and Multiple Carrier Generation in Graphene
K. J. Tielrooij, J. C. W. Song, S. A. Jensen +6
The conversion of light into free electron-hole pairs constitutes the key process in the fields of photodetection and photovoltaics. The efficiency of this process depends on the c…