Phonon confinement and size effect in Raman spectra of ZnO nanoparticles

Vitaly I. Korepanov; Si Yuan Chan; Hsu Cheng Hsu; Hiro o. Hamaguchi

doi:10.1016/j.heliyon.2019.e01222

Phonon confinement and size effect in Raman spectra of ZnO nanoparticles

Vitaly I. Korepanov, Si Yuan Chan, Hsu Cheng Hsu, Hiro o. Hamaguchi

Department of Photonics

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

56 Citations (Scopus)

Abstract

We study Raman spectra of ZnO nanoparticles of 5–12 nm size in the whole range of the first-order phonon bands. We apply the 3D phonon confinement model (PCM) for the interpretation of the observed Raman spectra. It is found that PCM is well applicable to the acoustic modes as well as to the optical ones, despite the fact that PCM has been thought not to be suitable for acoustic phonons. We show that the asymptotic behavior of PCM for the small-size limit is more consistent with the observation than that of the elastic sphere model (ESM). Furthermore, PCM gives detailed information on the complex size-dependent shapes of the phonon bands.

Original language	English
Article number	e01222
Journal	Heliyon
Volume	5
Issue number	2
DOIs	https://doi.org/10.1016/j.heliyon.2019.e01222
Publication status	Published - 2019 Feb

All Science Journal Classification (ASJC) codes

General

Access to Document

10.1016/j.heliyon.2019.e01222

Cite this

@article{0e5305df9ace40158d533c6f42ebf096,

title = "Phonon confinement and size effect in Raman spectra of ZnO nanoparticles",

abstract = "We study Raman spectra of ZnO nanoparticles of 5–12 nm size in the whole range of the first-order phonon bands. We apply the 3D phonon confinement model (PCM) for the interpretation of the observed Raman spectra. It is found that PCM is well applicable to the acoustic modes as well as to the optical ones, despite the fact that PCM has been thought not to be suitable for acoustic phonons. We show that the asymptotic behavior of PCM for the small-size limit is more consistent with the observation than that of the elastic sphere model (ESM). Furthermore, PCM gives detailed information on the complex size-dependent shapes of the phonon bands.",

author = "Korepanov, {Vitaly I.} and Chan, {Si Yuan} and Hsu, {Hsu Cheng} and Hamaguchi, {Hiro o.}",

note = "Funding Information: This work was supported by the Ministry of Education of Taiwan (“Aim for the Top University Plan” of National Chiao Tung University) Vitaly Korepanov was supported by the Ministry of Science and Higher Education of the Russian Federation ( 075-00475-19 -00 ). Si-Yuan Chan and Hsu-Cheng Hsu were supported by the Ministry of Science and Technology of Taiwan ( MOST 105-2112-M-006-004-MY3 ). Publisher Copyright: {\textcopyright} 2019 The Authors",

year = "2019",

month = feb,

doi = "10.1016/j.heliyon.2019.e01222",

language = "English",

volume = "5",

journal = "Heliyon",

issn = "2405-8440",

publisher = "Elsevier BV",

number = "2",

}

TY - JOUR

T1 - Phonon confinement and size effect in Raman spectra of ZnO nanoparticles

AU - Korepanov, Vitaly I.

AU - Chan, Si Yuan

AU - Hsu, Hsu Cheng

AU - Hamaguchi, Hiro o.

N1 - Funding Information: This work was supported by the Ministry of Education of Taiwan (“Aim for the Top University Plan” of National Chiao Tung University) Vitaly Korepanov was supported by the Ministry of Science and Higher Education of the Russian Federation ( 075-00475-19 -00 ). Si-Yuan Chan and Hsu-Cheng Hsu were supported by the Ministry of Science and Technology of Taiwan ( MOST 105-2112-M-006-004-MY3 ). Publisher Copyright: © 2019 The Authors

PY - 2019/2

Y1 - 2019/2

N2 - We study Raman spectra of ZnO nanoparticles of 5–12 nm size in the whole range of the first-order phonon bands. We apply the 3D phonon confinement model (PCM) for the interpretation of the observed Raman spectra. It is found that PCM is well applicable to the acoustic modes as well as to the optical ones, despite the fact that PCM has been thought not to be suitable for acoustic phonons. We show that the asymptotic behavior of PCM for the small-size limit is more consistent with the observation than that of the elastic sphere model (ESM). Furthermore, PCM gives detailed information on the complex size-dependent shapes of the phonon bands.

AB - We study Raman spectra of ZnO nanoparticles of 5–12 nm size in the whole range of the first-order phonon bands. We apply the 3D phonon confinement model (PCM) for the interpretation of the observed Raman spectra. It is found that PCM is well applicable to the acoustic modes as well as to the optical ones, despite the fact that PCM has been thought not to be suitable for acoustic phonons. We show that the asymptotic behavior of PCM for the small-size limit is more consistent with the observation than that of the elastic sphere model (ESM). Furthermore, PCM gives detailed information on the complex size-dependent shapes of the phonon bands.

UR - http://www.scopus.com/inward/record.url?scp=85061657971&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85061657971&partnerID=8YFLogxK

U2 - 10.1016/j.heliyon.2019.e01222

DO - 10.1016/j.heliyon.2019.e01222

M3 - Article

AN - SCOPUS:85061657971

SN - 2405-8440

VL - 5

JO - Heliyon

JF - Heliyon

IS - 2

M1 - e01222

ER -

Phonon confinement and size effect in Raman spectra of ZnO nanoparticles

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this