期刊
PHYSICAL REVIEW B
卷 96, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.96.035303
关键词
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资金
- Collaborative Research Program of the Institute for Chemical Research, Kyoto University [201315, 2012-46]
- KAKENHI [15H05428]
- CPHoST program
- CREST, Japan Science and Technology Agency [JPMJCR16N3]
- Grants-in-Aid for Scientific Research [16K17483, 15H05428] Funding Source: KAKEN
We investigate photoluminescence (PL) spectra and dynamics of clean silicon photonic crystal nanocavities at 10 K. A sharp emission peak due to the nanocavity mode has the largest intensity when the energy of the nanocavity mode is equal to the emission energy of the electron-hole droplets (EHDs). Time-resolved PL spectroscopy indicates that the PL lifetime of the EHD is reduced to as short as 1.2 ns by the nanocavity mode. A careful analysis of the lifetimes indicates that the radiative recombination rate for EHD is enhanced by a factor of larger than 5 by the Purcell effect.
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