Enhanced resonant Raman scattering and electron-phonon coupling from self-assembled secondary ZnO nanoparticles

Hsin Ming Cheng; Kuo Feng Lin; Hsu Cheng Hsu; Chih Jen Lin; Li Jiaun Lin; Wen Feng Hsieh

doi:10.1021/jp0533731

Enhanced resonant Raman scattering and electron-phonon coupling from self-assembled secondary ZnO nanoparticles

Hsin Ming Cheng, Kuo Feng Lin, Hsu Cheng Hsu, Chih Jen Lin, Li Jiaun Lin, Wen Feng Hsieh

Department of Photonics

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

91 Citations (Scopus)

Abstract

Self-assembled secondary ZnO nanoparticles, recognized with the agglomeration of crystalline subcrystals, are successfully synthesized by a simple sol-gel method. TEM images display that one artificial cluster behaves in a single-crystal-like wurtzite structure because subcrystals coagulate as the same crystal orientation. Moreover, from the resonant Raman scattering, the as-grown sample exhibits phonon red shift; meanwhile, the coupling strength between electron and longitudinal optical phonon, determined by the ratio of second-to first-order Raman scattering cross sections, diminishes compared with the samples after postannealing at 350 and 500°C. The size dependence of electron-phonon coupling is principally as a result of the Fröhlich interaction.

Original language	English
Pages (from-to)	18385-18390
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	39
DOIs	https://doi.org/10.1021/jp0533731
Publication status	Published - 2005 Oct 6

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1021/jp0533731

Cite this

@article{4d188174f29f457e868ad03b6c44e79f,

title = "Enhanced resonant Raman scattering and electron-phonon coupling from self-assembled secondary ZnO nanoparticles",

abstract = "Self-assembled secondary ZnO nanoparticles, recognized with the agglomeration of crystalline subcrystals, are successfully synthesized by a simple sol-gel method. TEM images display that one artificial cluster behaves in a single-crystal-like wurtzite structure because subcrystals coagulate as the same crystal orientation. Moreover, from the resonant Raman scattering, the as-grown sample exhibits phonon red shift; meanwhile, the coupling strength between electron and longitudinal optical phonon, determined by the ratio of second-to first-order Raman scattering cross sections, diminishes compared with the samples after postannealing at 350 and 500°C. The size dependence of electron-phonon coupling is principally as a result of the Fr{\"o}hlich interaction.",

author = "Cheng, {Hsin Ming} and Lin, {Kuo Feng} and Hsu, {Hsu Cheng} and Lin, {Chih Jen} and Lin, {Li Jiaun} and Hsieh, {Wen Feng}",

year = "2005",

month = oct,

day = "6",

doi = "10.1021/jp0533731",

language = "English",

volume = "109",

pages = "18385--18390",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

number = "39",

}

TY - JOUR

T1 - Enhanced resonant Raman scattering and electron-phonon coupling from self-assembled secondary ZnO nanoparticles

AU - Cheng, Hsin Ming

AU - Lin, Kuo Feng

AU - Hsu, Hsu Cheng

AU - Lin, Chih Jen

AU - Lin, Li Jiaun

AU - Hsieh, Wen Feng

PY - 2005/10/6

Y1 - 2005/10/6

N2 - Self-assembled secondary ZnO nanoparticles, recognized with the agglomeration of crystalline subcrystals, are successfully synthesized by a simple sol-gel method. TEM images display that one artificial cluster behaves in a single-crystal-like wurtzite structure because subcrystals coagulate as the same crystal orientation. Moreover, from the resonant Raman scattering, the as-grown sample exhibits phonon red shift; meanwhile, the coupling strength between electron and longitudinal optical phonon, determined by the ratio of second-to first-order Raman scattering cross sections, diminishes compared with the samples after postannealing at 350 and 500°C. The size dependence of electron-phonon coupling is principally as a result of the Fröhlich interaction.

AB - Self-assembled secondary ZnO nanoparticles, recognized with the agglomeration of crystalline subcrystals, are successfully synthesized by a simple sol-gel method. TEM images display that one artificial cluster behaves in a single-crystal-like wurtzite structure because subcrystals coagulate as the same crystal orientation. Moreover, from the resonant Raman scattering, the as-grown sample exhibits phonon red shift; meanwhile, the coupling strength between electron and longitudinal optical phonon, determined by the ratio of second-to first-order Raman scattering cross sections, diminishes compared with the samples after postannealing at 350 and 500°C. The size dependence of electron-phonon coupling is principally as a result of the Fröhlich interaction.

UR - http://www.scopus.com/inward/record.url?scp=26844568418&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26844568418&partnerID=8YFLogxK

U2 - 10.1021/jp0533731

DO - 10.1021/jp0533731

M3 - Article

C2 - 16853367

AN - SCOPUS:26844568418

SN - 1520-6106

VL - 109

SP - 18385

EP - 18390

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 39

ER -

Enhanced resonant Raman scattering and electron-phonon coupling from self-assembled secondary ZnO nanoparticles

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this