Super-poissonian statistics of photon emission from single CdSe-CdS Core-shell nanocrystals coupled to metal nanostructures

Young Shin Park; Yagnaseni Ghosh; Yongfen Chen; Andrei Piryatinski; Ping Xu; Nathan Harris Mack; Hsing Lin Wang; Victor Ivanovich Klimov; Jennifer Ann Hollingsworth; Han Htoon

doi:10.1103/PhysRevLett.110.117401

Super-poissonian statistics of photon emission from single CdSe-CdS Core-shell nanocrystals coupled to metal nanostructures

Young Shin Park
, Yagnaseni Ghosh
, Yongfen Chen
, Andrei Piryatinski
, Ping Xu
, Nathan Harris Mack
, Hsing Lin Wang
, Victor Ivanovich Klimov
, Jennifer Ann Hollingsworth
, Han Htoon

Los Alamos National Laboratory

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

71 Scopus citations

Abstract

We demonstrate that photon antibunching observed for individual nanocrystal quantum dots (NQDs) can be transformed into photon bunching characterized by super-Poissonian statistics when they are coupled to metal nanostructures (MNs). This observation indicates that, while the quantum yield of a biexciton (Q _2X) is lower than that of a single exciton (Q_1X) in freestanding NQDs, Q_2X becomes greater than Q_1X in NQDs coupled to MNs. This unique phenomenon is attributed to metal-induced quenching with a rate that scales more slowly with exciton multiplicity than the radiative decay rate and dominates over other nonradiative decay channels for both single excitons and biexcitons.

Original language	English
Article number	117401
Journal	Physical Review Letters
Volume	110
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.110.117401
State	Published - Mar 11 2013

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title = "Super-poissonian statistics of photon emission from single CdSe-CdS Core-shell nanocrystals coupled to metal nanostructures",

abstract = "We demonstrate that photon antibunching observed for individual nanocrystal quantum dots (NQDs) can be transformed into photon bunching characterized by super-Poissonian statistics when they are coupled to metal nanostructures (MNs). This observation indicates that, while the quantum yield of a biexciton (Q 2X) is lower than that of a single exciton (Q1X) in freestanding NQDs, Q2X becomes greater than Q1X in NQDs coupled to MNs. This unique phenomenon is attributed to metal-induced quenching with a rate that scales more slowly with exciton multiplicity than the radiative decay rate and dominates over other nonradiative decay channels for both single excitons and biexcitons.",

author = "Park, \{Young Shin\} and Yagnaseni Ghosh and Yongfen Chen and Andrei Piryatinski and Ping Xu and Mack, \{Nathan Harris\} and Wang, \{Hsing Lin\} and Klimov, \{Victor Ivanovich\} and Hollingsworth, \{Jennifer Ann\} and Han Htoon",

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day = "11",

doi = "10.1103/PhysRevLett.110.117401",

language = "English",

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T1 - Super-poissonian statistics of photon emission from single CdSe-CdS Core-shell nanocrystals coupled to metal nanostructures

AU - Park, Young Shin

AU - Ghosh, Yagnaseni

AU - Chen, Yongfen

AU - Piryatinski, Andrei

AU - Xu, Ping

AU - Mack, Nathan Harris

AU - Wang, Hsing Lin

AU - Klimov, Victor Ivanovich

AU - Hollingsworth, Jennifer Ann

AU - Htoon, Han

PY - 2013/3/11

Y1 - 2013/3/11

N2 - We demonstrate that photon antibunching observed for individual nanocrystal quantum dots (NQDs) can be transformed into photon bunching characterized by super-Poissonian statistics when they are coupled to metal nanostructures (MNs). This observation indicates that, while the quantum yield of a biexciton (Q 2X) is lower than that of a single exciton (Q1X) in freestanding NQDs, Q2X becomes greater than Q1X in NQDs coupled to MNs. This unique phenomenon is attributed to metal-induced quenching with a rate that scales more slowly with exciton multiplicity than the radiative decay rate and dominates over other nonradiative decay channels for both single excitons and biexcitons.

AB - We demonstrate that photon antibunching observed for individual nanocrystal quantum dots (NQDs) can be transformed into photon bunching characterized by super-Poissonian statistics when they are coupled to metal nanostructures (MNs). This observation indicates that, while the quantum yield of a biexciton (Q 2X) is lower than that of a single exciton (Q1X) in freestanding NQDs, Q2X becomes greater than Q1X in NQDs coupled to MNs. This unique phenomenon is attributed to metal-induced quenching with a rate that scales more slowly with exciton multiplicity than the radiative decay rate and dominates over other nonradiative decay channels for both single excitons and biexcitons.

UR - https://www.scopus.com/pages/publications/84874971812

U2 - 10.1103/PhysRevLett.110.117401

DO - 10.1103/PhysRevLett.110.117401

M3 - Article

SN - 0031-9007

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

M1 - 117401

ER -

Super-poissonian statistics of photon emission from single CdSe-CdS Core-shell nanocrystals coupled to metal nanostructures

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