Photo-switching behavior of CdS nanoparticles doped in a polymer film

Yuhki Ohara; Takakazu Nakabayashi; Kentaro Iwasaki; Tsukasa Torimoto; Bunsho Ohtani; Nobuhiro Ohta

doi:10.1016/j.crci.2005.02.040

Photo-switching behavior of CdS nanoparticles doped in a polymer film

Yuhki Ohara, Takakazu Nakabayashi, Kentaro Iwasaki, Tsukasa Torimoto, Bunsho Ohtani, Nobuhiro Ohta

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

7 Citations (Scopus)

Abstract

Light-emission intensity of CdS nanoparticles doped in a PMMA film is enhanced by a UV irradiation in air, but the emission intensity is strongly de-enhanced at a low pressure of 10^-5 torr. Atmospheric gas as well as UV irradiation is essential for the enhancement, and these enhancement and de-enhancement processes are almost completely reversible. The emission of CdS nanoparticles doped in a PMMA film is also quenched by applying an external electric field, suggesting that the non-radiative decay rate from the emissive exciton state is accelerated by an external electric field. To cite this article: Y. Ohara et al., C. R. Chimie 9 (2006).

Original language	English
Pages (from-to)	742-749
Number of pages	8
Journal	Comptes Rendus Chimie
Volume	9
Issue number	5-6
DOIs	https://doi.org/10.1016/j.crci.2005.02.040
Publication status	Published - 2006 May
Externally published	Yes

Keywords

Absorption and emission
CdS nanoparticle
Electric field effects
Photoswitching behavior

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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10.1016/j.crci.2005.02.040

Cite this

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title = "Photo-switching behavior of CdS nanoparticles doped in a polymer film",

abstract = "Light-emission intensity of CdS nanoparticles doped in a PMMA film is enhanced by a UV irradiation in air, but the emission intensity is strongly de-enhanced at a low pressure of 10-5 torr. Atmospheric gas as well as UV irradiation is essential for the enhancement, and these enhancement and de-enhancement processes are almost completely reversible. The emission of CdS nanoparticles doped in a PMMA film is also quenched by applying an external electric field, suggesting that the non-radiative decay rate from the emissive exciton state is accelerated by an external electric field. To cite this article: Y. Ohara et al., C. R. Chimie 9 (2006).",

keywords = "Absorption and emission, CdS nanoparticle, Electric field effects, Photoswitching behavior",

author = "Yuhki Ohara and Takakazu Nakabayashi and Kentaro Iwasaki and Tsukasa Torimoto and Bunsho Ohtani and Nobuhiro Ohta",

note = "Funding Information: This work has been supported in part by Grants-in-Aid for Scientific Research (Grant Nos. 15205001, 15655001, and 15685005) and for Scientific Research on Priority Area (417) from the Ministry of Education, Culture, Sports, Science, and Technology in Japan.",

year = "2006",

month = may,

doi = "10.1016/j.crci.2005.02.040",

language = "English",

volume = "9",

pages = "742--749",

journal = "Comptes Rendus Chimie",

issn = "1631-0748",

publisher = "Elsevier Masson",

number = "5-6",

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TY - JOUR

T1 - Photo-switching behavior of CdS nanoparticles doped in a polymer film

AU - Ohara, Yuhki

AU - Nakabayashi, Takakazu

AU - Iwasaki, Kentaro

AU - Torimoto, Tsukasa

AU - Ohtani, Bunsho

AU - Ohta, Nobuhiro

N1 - Funding Information: This work has been supported in part by Grants-in-Aid for Scientific Research (Grant Nos. 15205001, 15655001, and 15685005) and for Scientific Research on Priority Area (417) from the Ministry of Education, Culture, Sports, Science, and Technology in Japan.

PY - 2006/5

Y1 - 2006/5

N2 - Light-emission intensity of CdS nanoparticles doped in a PMMA film is enhanced by a UV irradiation in air, but the emission intensity is strongly de-enhanced at a low pressure of 10-5 torr. Atmospheric gas as well as UV irradiation is essential for the enhancement, and these enhancement and de-enhancement processes are almost completely reversible. The emission of CdS nanoparticles doped in a PMMA film is also quenched by applying an external electric field, suggesting that the non-radiative decay rate from the emissive exciton state is accelerated by an external electric field. To cite this article: Y. Ohara et al., C. R. Chimie 9 (2006).

AB - Light-emission intensity of CdS nanoparticles doped in a PMMA film is enhanced by a UV irradiation in air, but the emission intensity is strongly de-enhanced at a low pressure of 10-5 torr. Atmospheric gas as well as UV irradiation is essential for the enhancement, and these enhancement and de-enhancement processes are almost completely reversible. The emission of CdS nanoparticles doped in a PMMA film is also quenched by applying an external electric field, suggesting that the non-radiative decay rate from the emissive exciton state is accelerated by an external electric field. To cite this article: Y. Ohara et al., C. R. Chimie 9 (2006).

KW - Absorption and emission

KW - CdS nanoparticle

KW - Electric field effects

KW - Photoswitching behavior

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U2 - 10.1016/j.crci.2005.02.040

DO - 10.1016/j.crci.2005.02.040

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SN - 1631-0748

VL - 9

SP - 742

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JO - Comptes Rendus Chimie

JF - Comptes Rendus Chimie

IS - 5-6

ER -

Photo-switching behavior of CdS nanoparticles doped in a polymer film

Abstract

Keywords

ASJC Scopus subject areas

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