Field-induced Stark effects in Ag-coated CdS quantum dots

Koo Chul Je; Sang Youp Yim; Jae Hoon Lee; Eun Hee Jeang; Seung Han Park

doi:10.1117/12.601480

Field-induced Stark effects in Ag-coated CdS quantum dots

Koo Chul Je, Sang Youp Yim, Jae Hoon Lee, Eun Hee Jeang, Seung Han Park

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

Field-induced Stark effects in Ag-coated CdS quantum dot structures are presented. We observe clear exciton peaks due to the quantum confinement effect and the surface plasmon effect in Ag-coated CdS quantum dot fabricated by gamma ray irradiation method. In addition, we observed also a dominant red-shift of the CdS exciton absorption peak as the Wannier Stark effect, implying the strong local field effect in the metal-coated semiconductor composite quantum dot system. The Stark shift of the exciton peak is investigated as a function of the local field for different silver thickness and various sizes of quantum dots based on the effective-mass Hamiltonian using the numerical-matrix-diagonalization method.

Original language	English
Article number	30
Pages (from-to)	146-151
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5734
DOIs	https://doi.org/10.1117/12.601480
Publication status	Published - 2005
Event	Quantum Dots, Nanoparticles, and Nanoclusters II - San Jose, CA, United States Duration: 2005 Jan 24 → 2005 Jan 25

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.601480

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title = "Field-induced Stark effects in Ag-coated CdS quantum dots",

abstract = "Field-induced Stark effects in Ag-coated CdS quantum dot structures are presented. We observe clear exciton peaks due to the quantum confinement effect and the surface plasmon effect in Ag-coated CdS quantum dot fabricated by gamma ray irradiation method. In addition, we observed also a dominant red-shift of the CdS exciton absorption peak as the Wannier Stark effect, implying the strong local field effect in the metal-coated semiconductor composite quantum dot system. The Stark shift of the exciton peak is investigated as a function of the local field for different silver thickness and various sizes of quantum dots based on the effective-mass Hamiltonian using the numerical-matrix-diagonalization method.",

author = "Je, {Koo Chul} and Yim, {Sang Youp} and Lee, {Jae Hoon} and Jeang, {Eun Hee} and Park, {Seung Han}",

year = "2005",

doi = "10.1117/12.601480",

language = "English",

volume = "5734",

pages = "146--151",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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note = "Quantum Dots, Nanoparticles, and Nanoclusters II ; Conference date: 24-01-2005 Through 25-01-2005",

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T1 - Field-induced Stark effects in Ag-coated CdS quantum dots

AU - Je, Koo Chul

AU - Yim, Sang Youp

AU - Lee, Jae Hoon

AU - Jeang, Eun Hee

AU - Park, Seung Han

PY - 2005

Y1 - 2005

N2 - Field-induced Stark effects in Ag-coated CdS quantum dot structures are presented. We observe clear exciton peaks due to the quantum confinement effect and the surface plasmon effect in Ag-coated CdS quantum dot fabricated by gamma ray irradiation method. In addition, we observed also a dominant red-shift of the CdS exciton absorption peak as the Wannier Stark effect, implying the strong local field effect in the metal-coated semiconductor composite quantum dot system. The Stark shift of the exciton peak is investigated as a function of the local field for different silver thickness and various sizes of quantum dots based on the effective-mass Hamiltonian using the numerical-matrix-diagonalization method.

AB - Field-induced Stark effects in Ag-coated CdS quantum dot structures are presented. We observe clear exciton peaks due to the quantum confinement effect and the surface plasmon effect in Ag-coated CdS quantum dot fabricated by gamma ray irradiation method. In addition, we observed also a dominant red-shift of the CdS exciton absorption peak as the Wannier Stark effect, implying the strong local field effect in the metal-coated semiconductor composite quantum dot system. The Stark shift of the exciton peak is investigated as a function of the local field for different silver thickness and various sizes of quantum dots based on the effective-mass Hamiltonian using the numerical-matrix-diagonalization method.

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DO - 10.1117/12.601480

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AN - SCOPUS:23744462360

SN - 0277-786X

VL - 5734

SP - 146

EP - 151

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 30

T2 - Quantum Dots, Nanoparticles, and Nanoclusters II

Y2 - 24 January 2005 through 25 January 2005

ER -

Field-induced Stark effects in Ag-coated CdS quantum dots

Abstract

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