High third-order non-resonant optical non-linearities of surface modified CdS quantum dots embedded in BaTiO3 thin film

Yong Yang; Jianlin Shi; Shugang Dai; Xueguo Zhao; Xianghua Wang

doi:10.1016/S0040-6090(03)00037-3

High third-order non-resonant optical non-linearities of surface modified CdS quantum dots embedded in BaTiO₃ thin film

Yong Yang
, Jianlin Shi^*
, Shugang Dai
, Xueguo Zhao
, Xianghua Wang

^*Corresponding author for this work

CAS - Shanghai Institute of Ceramics

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

14 Scopus citations

Abstract

Surface-modified nanocrystalline CdS has been integrated in amorphous BaTiO₃ films by a dip-coating process. The films were characterized by X-ray photoelectron spectra and transmission electron microscopy technique. The thin films exhibited unique absorption edge blue-shift with the increase of heat-treatment temperature due to the dielectric confinement in BaTiO₃ matrix and the thermal expansion mismatch between the semiconductor quantum dots and the host matrix. The strong fluorescence of CdS quantum dots at room temperature has been observed and is mainly attributed to the band-edge transition of CdS quantum dots. The composite films also exhibit ultra-fast non-linear response and high non-resonant, third-order optical non-linearities.

Original language	English
Pages (from-to)	217-222
Number of pages	6
Journal	Thin Solid Films
Volume	437
Issue number	1-2
DOIs	https://doi.org/10.1016/S0040-6090(03)00037-3
State	Published - 1 Aug 2003
Externally published	Yes

Keywords

Blue-shift
Decay time
Fluorescence
Non-linearities
Sol-gel

Access to Document

10.1016/S0040-6090(03)00037-3

Cite this

@article{03e162beb9ac4ac1b1981b8387abb447,

title = "High third-order non-resonant optical non-linearities of surface modified CdS quantum dots embedded in BaTiO3 thin film",

abstract = "Surface-modified nanocrystalline CdS has been integrated in amorphous BaTiO3 films by a dip-coating process. The films were characterized by X-ray photoelectron spectra and transmission electron microscopy technique. The thin films exhibited unique absorption edge blue-shift with the increase of heat-treatment temperature due to the dielectric confinement in BaTiO3 matrix and the thermal expansion mismatch between the semiconductor quantum dots and the host matrix. The strong fluorescence of CdS quantum dots at room temperature has been observed and is mainly attributed to the band-edge transition of CdS quantum dots. The composite films also exhibit ultra-fast non-linear response and high non-resonant, third-order optical non-linearities.",

keywords = "Blue-shift, Decay time, Fluorescence, Non-linearities, Sol-gel",

author = "Yong Yang and Jianlin Shi and Shugang Dai and Xueguo Zhao and Xianghua Wang",

year = "2003",

month = aug,

day = "1",

doi = "10.1016/S0040-6090(03)00037-3",

language = "英语",

volume = "437",

pages = "217--222",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - High third-order non-resonant optical non-linearities of surface modified CdS quantum dots embedded in BaTiO3 thin film

AU - Yang, Yong

AU - Shi, Jianlin

AU - Dai, Shugang

AU - Zhao, Xueguo

AU - Wang, Xianghua

PY - 2003/8/1

Y1 - 2003/8/1

N2 - Surface-modified nanocrystalline CdS has been integrated in amorphous BaTiO3 films by a dip-coating process. The films were characterized by X-ray photoelectron spectra and transmission electron microscopy technique. The thin films exhibited unique absorption edge blue-shift with the increase of heat-treatment temperature due to the dielectric confinement in BaTiO3 matrix and the thermal expansion mismatch between the semiconductor quantum dots and the host matrix. The strong fluorescence of CdS quantum dots at room temperature has been observed and is mainly attributed to the band-edge transition of CdS quantum dots. The composite films also exhibit ultra-fast non-linear response and high non-resonant, third-order optical non-linearities.

AB - Surface-modified nanocrystalline CdS has been integrated in amorphous BaTiO3 films by a dip-coating process. The films were characterized by X-ray photoelectron spectra and transmission electron microscopy technique. The thin films exhibited unique absorption edge blue-shift with the increase of heat-treatment temperature due to the dielectric confinement in BaTiO3 matrix and the thermal expansion mismatch between the semiconductor quantum dots and the host matrix. The strong fluorescence of CdS quantum dots at room temperature has been observed and is mainly attributed to the band-edge transition of CdS quantum dots. The composite films also exhibit ultra-fast non-linear response and high non-resonant, third-order optical non-linearities.

KW - Blue-shift

KW - Decay time

KW - Fluorescence

KW - Non-linearities

KW - Sol-gel

UR - https://www.scopus.com/pages/publications/0038447957

U2 - 10.1016/S0040-6090(03)00037-3

DO - 10.1016/S0040-6090(03)00037-3

M3 - 文章

AN - SCOPUS:0038447957

SN - 0040-6090

VL - 437

SP - 217

EP - 222

JO - Thin Solid Films

JF - Thin Solid Films

IS - 1-2

ER -

High third-order non-resonant optical non-linearities of surface modified CdS quantum dots embedded in BaTiO₃ thin film

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this