BROWSE

Related Scientist

cces's photo.

cces
강상관계물질연구단
more info

ITEM VIEW & DOWNLOAD

Optical characterization of surface plasmon resonance of Pt nanoparticles in TiO2-SiO2 nanocomposite films

Cited 6 time in webofscience Cited 7 time in scopus
1,113 Viewed 205 Downloaded
Title
Optical characterization of surface plasmon resonance of Pt nanoparticles in TiO2-SiO2 nanocomposite films
Author(s)
Tae.Dong Kang; Yoon J.-G.
Publication Date
2017-10
Journal
JOURNAL OF APPLIED PHYSICS, v.122, no.13, pp.134302
Publisher
AMER INST PHYSICS
Abstract
The surface plasmon resonance (SPR) of Pt nanoparticles (NPs) in TiO2-SiO2 nanocomposite films, in which Pt NPs of about 5 nm are incorporated, is investigated by using spectroscopic ellipsometry. After obtaining the dielectric functions of Pt NPs from the Pt-SiO2 nanocomposite film, Pt-TiO2-SiO2 nanocomposite films are analyzed by applying a homogenous single layer model with an effective medium approximation. The effects of Pt NPs on the optical properties of the nanocomposite films are clearly revealed in the imaginary part of the dielectric functions, showing an increase in broadband absorption near the band gap of the films with the increasing volume fraction of Pt NPs in the films. Particularly, the maximum of extinction cross-section of Pt NPs in the films coincides with the broadband absorption, indicating that the localized SPR of Pt NPs is responsible for the enhanced light absorption at the visible-light wavelengths. This work emphasizes that, although SPR absorption of Pt NPs is not so distinctive in the visible-light wavelengths, proper tuning of the dielectric environment as well as the volume fraction of Pt NPs can enhance the photoactivity of the nanocomposite films. © 2017 Author(s)
URI
https://pr.ibs.re.kr/handle/8788114/4024
DOI
10.1063/1.4993980
ISSN
0021-8979
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
업적확인메일_강태동.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse