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SUMMARY:EE Distinguished Speakers Seminar: Exciton Manipulation in 2D TMDC
  Heterostructures
DTSTART:20190322T131500
DTEND:20190322T141500
DTSTAMP:20260527T190506Z
UID:0a482de374c8a86383fe711fdbf374b030c98e03c4f21b670b53b3c0
CATEGORIES:Conferences - Seminars
DESCRIPTION:Andras Kis\, Professor in Electrical Engineering at EPFL\, La
 usanne. Andras Kis started research on 2D semiconductors in 2008\, after j
 oining EPFL and has made fundamental contributions to the study of the ele
 ctronic properties of atomically thin TMDCs. His pioneering work on MoS2 t
 ransistors was the first demonstration of high-quality device on a 2D semi
 conductor. Andras Kis is also serving as the editor in chief of the Nature
  partner journal 2D materials and applications.\nAbstract: The discovery o
 f graphene marked the start of research in 2D electronic materials which w
 as expanded in new directions with MoS2 and other layered semiconducting m
 aterials. They have a wide range of interesting fundamental properties and
  potential applications. New opportunities are enabled by the band structu
 re of transition metal dichalcogenides (TMDCs) in which we could harness t
 he valley degree of freedom for valleytronics and next-generation photonic
 s. Long-lived interlayer excitons in van der Waals heterostructures based 
 on TMDCs have recently emerged as a promising platform for this\, allowing
  control over exciton diffusion length\, energy and polarisation. I will s
 how here how by using MoS2/WSe2 van der Waals heterostructures\, we can re
 alize excitonic transistors with switching action\, confinement and contro
 l over diffusion length at room temperature in a reconfigurable potential 
 landscape. Heterostructures with a long-range moiré potential such as in 
 MoSe2/WSe2\, on the other hand\, offer the way to control polarization\, e
 mission and wavelength emitted by different optically active regions in th
 e moiré. 
LOCATION:ELA 2 https://plan.epfl.ch/?room==ELA%202
STATUS:CONFIRMED
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