期刊
APPLIED PHYSICS LETTERS
卷 103, 期 18, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4826679
关键词
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资金
- Air Force Office of Scientific Research PECASE
- Center for Functional Nanomaterials
- Brookhaven National Laboratory
- U. S. Department of Energy, Office of Basic Energy Sciences [DE-AC0298CH10886, DESC0001088, DE-SC0001085]
- NIH [R021 DC012440001]
- 973 program [2012CB921900]
- NSFC [61377035]
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. (c) 2013 Author( s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
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