White-light emission by phonon assisted coherent mixing of excitons in Au8-CdS hybrid nanorods

S. Rath; O. Halder; A. Pradhani; B. Satpati; A. Maity; T. K. Chini; N. Gogurla; S. K. Ray

doi:10.1088/0957-4484/27/49/495706

White-light emission by phonon assisted coherent mixing of excitons in Au8-CdS hybrid nanorods

S. Rath, O. Halder, A. Pradhani, B. Satpati, A. Maity, T. K. Chini, N. Gogurla, S. K. Ray

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

3 Scopus citations

Abstract

Gold cluster (Au₈) coated CdS hybrid nanorods (HNRs), synthesized using a sonication assisted assembly route, exhibit phonon assisted coherent mixing of excitons. As observed from optical absorption, Raman scattering, x-ray diffraction and transmission electron microscopic studies, the Au₈ modulates the crystal - and electronic - structure of the CdS nanorods, effecting enhancement of exciton-phonon (e-p) interactions. The e-p interaction and entropy effect mediated phase matching of the excitonic transitions, leading - via cooperative and coherent mixing of the excitons' color - to the emission of white light, has been confirmed from room temperature and time resolved photoluminescence measurements.

Original language	English
Article number	495706
Journal	Nanotechnology
Volume	27
Issue number	49
DOIs	https://doi.org/10.1088/0957-4484/27/49/495706
State	Published - 10 Nov 2016
Externally published	Yes

Keywords

coherent emission
hybrid semiconductor
optical properties

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0957-4484/27/49/495706

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title = "White-light emission by phonon assisted coherent mixing of excitons in Au8-CdS hybrid nanorods",

abstract = "Gold cluster (Au8) coated CdS hybrid nanorods (HNRs), synthesized using a sonication assisted assembly route, exhibit phonon assisted coherent mixing of excitons. As observed from optical absorption, Raman scattering, x-ray diffraction and transmission electron microscopic studies, the Au8 modulates the crystal - and electronic - structure of the CdS nanorods, effecting enhancement of exciton-phonon (e-p) interactions. The e-p interaction and entropy effect mediated phase matching of the excitonic transitions, leading - via cooperative and coherent mixing of the excitons' color - to the emission of white light, has been confirmed from room temperature and time resolved photoluminescence measurements.",

keywords = "coherent emission, hybrid semiconductor, optical properties",

author = "S. Rath and O. Halder and A. Pradhani and B. Satpati and A. Maity and Chini, {T. K.} and N. Gogurla and Ray, {S. K.}",

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doi = "10.1088/0957-4484/27/49/495706",

language = "English",

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TY - JOUR

T1 - White-light emission by phonon assisted coherent mixing of excitons in Au8-CdS hybrid nanorods

AU - Rath, S.

AU - Halder, O.

AU - Pradhani, A.

AU - Satpati, B.

AU - Maity, A.

AU - Chini, T. K.

AU - Gogurla, N.

AU - Ray, S. K.

PY - 2016/11/10

Y1 - 2016/11/10

N2 - Gold cluster (Au8) coated CdS hybrid nanorods (HNRs), synthesized using a sonication assisted assembly route, exhibit phonon assisted coherent mixing of excitons. As observed from optical absorption, Raman scattering, x-ray diffraction and transmission electron microscopic studies, the Au8 modulates the crystal - and electronic - structure of the CdS nanorods, effecting enhancement of exciton-phonon (e-p) interactions. The e-p interaction and entropy effect mediated phase matching of the excitonic transitions, leading - via cooperative and coherent mixing of the excitons' color - to the emission of white light, has been confirmed from room temperature and time resolved photoluminescence measurements.

AB - Gold cluster (Au8) coated CdS hybrid nanorods (HNRs), synthesized using a sonication assisted assembly route, exhibit phonon assisted coherent mixing of excitons. As observed from optical absorption, Raman scattering, x-ray diffraction and transmission electron microscopic studies, the Au8 modulates the crystal - and electronic - structure of the CdS nanorods, effecting enhancement of exciton-phonon (e-p) interactions. The e-p interaction and entropy effect mediated phase matching of the excitonic transitions, leading - via cooperative and coherent mixing of the excitons' color - to the emission of white light, has been confirmed from room temperature and time resolved photoluminescence measurements.

KW - coherent emission

KW - hybrid semiconductor

KW - optical properties

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DO - 10.1088/0957-4484/27/49/495706

M3 - Article

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SN - 0957-4484

VL - 27

JO - Nanotechnology

JF - Nanotechnology

IS - 49

M1 - 495706

ER -

White-light emission by phonon assisted coherent mixing of excitons in Au8-CdS hybrid nanorods

Abstract

Keywords

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