Controlling the spontaneous emission rate of monolayer MoS2 in a photonic crystal nanocavity
Abstract
We report on controlling the spontaneous emission (SE) rate of a molybdenum disulfide (MoS2) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolved photoluminescence (PL) mapping shows strong variations of emission when the MoS2 monolayer is on the PPC cavity, on the PPC lattice, on the air gap, and on the unpatterned gallium phosphide substrate. Polarization dependences of the cavity-coupled MoS2 emission show a more than 5 times stronger extracted PL intensity than the un-coupled emission, which indicates an underlying cavity mode Purcell enhancement of the MoS2 SE rate exceeding a factor of 70. © 2013 © 2013 Author(s).
Date Published
Journal
Applied Physics Letters
Volume
103
Issue
18
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84889664028&doi=10.1063%2f1.4826679&partnerID=40&md5=537081981b8c3dab6f1252cdb0de3415
DOI
10.1063/1.4826679
Research Area
Group (Lab)
Kin Fai Mak Group
Funding Source
R021 DC012440001
DE-SC0001085
DE-SC0001088
DE-AC02-98CH10886
61377035
2012CB921900