Anomalous enhanced emission from PbS quantum dots on a photonic-crystal microcavity

Ting Shan Luk; Shisheng Xiong; Weng W. Chow; Xiaoyu Miao; Ganapathi Subramania; Paul J. Resnick; Arthur J. Fischer; Jeffrey C. Brinker

doi:10.1364/JOSAB.28.001365

Anomalous enhanced emission from PbS quantum dots on a photonic-crystal microcavity

Ting Shan Luk
, Shisheng Xiong
, Weng W. Chow
, Xiaoyu Miao
, Ganapathi Subramania
, Paul J. Resnick
, Arthur J. Fischer
, Jeffrey C. Brinker

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We report up to 75 times enhancement in emission from lithographically produced photonic crystals with postprocessing close-packed colloidal quantum-dot incorporation. In our analysis, we use the emission from a closepacked free-standing film as a reference. After discounting the angular redistribution effect, our analysis shows that the observed enhancement is larger than the combined effects of Purcell enhancement and dielectric enhancement with the microscopic local field. The additional enhancement mechanisms, which are consistent with all our observations, are thought to be spectral diffusion mediated by phonons and local polarization fluctuations that allow off-resonant excitons to emit at the cavity wavelengths. © 2011 Optical Society of America.

Original language	English
Pages (from-to)	1365-1373
Number of pages	9
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	28
Issue number	6
DOIs	https://doi.org/10.1364/JOSAB.28.001365
State	Published - Jan 1 2011
Externally published	Yes

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title = "Anomalous enhanced emission from PbS quantum dots on a photonic-crystal microcavity",

abstract = "We report up to 75 times enhancement in emission from lithographically produced photonic crystals with postprocessing close-packed colloidal quantum-dot incorporation. In our analysis, we use the emission from a closepacked free-standing film as a reference. After discounting the angular redistribution effect, our analysis shows that the observed enhancement is larger than the combined effects of Purcell enhancement and dielectric enhancement with the microscopic local field. The additional enhancement mechanisms, which are consistent with all our observations, are thought to be spectral diffusion mediated by phonons and local polarization fluctuations that allow off-resonant excitons to emit at the cavity wavelengths. {\textcopyright} 2011 Optical Society of America.",

author = "Luk, \{Ting Shan\} and Shisheng Xiong and Chow, \{Weng W.\} and Xiaoyu Miao and Ganapathi Subramania and Resnick, \{Paul J.\} and Fischer, \{Arthur J.\} and Brinker, \{Jeffrey C.\}",

year = "2011",

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doi = "10.1364/JOSAB.28.001365",

language = "English",

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T1 - Anomalous enhanced emission from PbS quantum dots on a photonic-crystal microcavity

AU - Luk, Ting Shan

AU - Xiong, Shisheng

AU - Chow, Weng W.

AU - Miao, Xiaoyu

AU - Subramania, Ganapathi

AU - Resnick, Paul J.

AU - Fischer, Arthur J.

AU - Brinker, Jeffrey C.

PY - 2011/1/1

Y1 - 2011/1/1

N2 - We report up to 75 times enhancement in emission from lithographically produced photonic crystals with postprocessing close-packed colloidal quantum-dot incorporation. In our analysis, we use the emission from a closepacked free-standing film as a reference. After discounting the angular redistribution effect, our analysis shows that the observed enhancement is larger than the combined effects of Purcell enhancement and dielectric enhancement with the microscopic local field. The additional enhancement mechanisms, which are consistent with all our observations, are thought to be spectral diffusion mediated by phonons and local polarization fluctuations that allow off-resonant excitons to emit at the cavity wavelengths. © 2011 Optical Society of America.

AB - We report up to 75 times enhancement in emission from lithographically produced photonic crystals with postprocessing close-packed colloidal quantum-dot incorporation. In our analysis, we use the emission from a closepacked free-standing film as a reference. After discounting the angular redistribution effect, our analysis shows that the observed enhancement is larger than the combined effects of Purcell enhancement and dielectric enhancement with the microscopic local field. The additional enhancement mechanisms, which are consistent with all our observations, are thought to be spectral diffusion mediated by phonons and local polarization fluctuations that allow off-resonant excitons to emit at the cavity wavelengths. © 2011 Optical Society of America.

UR - https://www.scopus.com/pages/publications/79958776834

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DO - 10.1364/JOSAB.28.001365

M3 - Article

SN - 0740-3224

VL - 28

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EP - 1373

JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

IS - 6

ER -

Anomalous enhanced emission from PbS quantum dots on a photonic-crystal microcavity

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