6 papers
Dielectric control of ultrafast carrier dynamics and transport in graphene
Hai I. Wang, Xiaoyu Jia, Anand Nivedan +4
Understanding the ultrafast dynamics of photoexcited charges in graphene is essential, as the microscopic mechanisms underlying these dynamics determine many of graphene's optical,…
Quantum Coherence Governs Macroscopic Polymorphism in Organic Semiconductors
Hai Wang, Tianhong Huang, Jiawei Chang +1
Polymorphism in organic semiconductors is conventionally framed as equilibrium thermodynamic selection, yet atmospheric-pressure vapor deposition routinely produces metastable phas…
Itinerant Orbital Hall Effect Mechanism Leading to Large Negative Orbital Torques from Light Metal Vanadium
Nikhil Vijayan, Durgesh Kumar, Ao Du +13
The orbital Hall effect (OHE) has attracted significant attention for developing energy-efficient electronic devices. However, utilizing it in fast, low-power devices requires an e…
Temperature- and charge carrier density-dependent electronic response in methylammonium lead iodide
Jiacheng Wang Jungmin Park, Lei Gao, Lucia Di Virgilio +8
Understanding carrier dynamics in photoexcited metal-halide perovskites is key for optoelectronic devices such as solar cells (low carrier densities) and lasers (high carrier densi…
Beyond the band edge: Unveiling high-mobility hot carriers in a two-dimensional conjugated coordination polymer
Shuai Fu, Xing Huang, Guoquan Gao +19
Hot carriers, inheriting excess kinetic energy from high-energy photons, underpin numerous optoelectronic applications involving non-equilibrium transport processes. Current resear…
The Effect of Charge Carrier Cooling on the Ultrafast Carrier Dynamics in CsAgBiBr Thin Films
Huygen J. Jobsis, Lei Gao, Antti-Pekka M. Reponen +5
CsAgBiBr shows promise for solution-processable optoelectronics, such as photovoltaics, photocatalysis and X-ray detection. However, various spectroscopic studies report ra…