Femtosecond pump-probe investigation on relaxation of photoexcitations and spectral narrowing of photoluminescence for poly(para-phenylenevinylene)

Sae Chae Jeoung; Yong Hee Kim; Dongho Kim; Ja Young Han; Min Sik Jang; Jung Ik Lee; Hong Ku Shim; Cheon Min Kim; Choon Sup Yoon

doi:10.1063/1.123296

Femtosecond pump-probe investigation on relaxation of photoexcitations and spectral narrowing of photoluminescence for poly(para-phenylenevinylene)

Sae Chae Jeoung, Yong Hee Kim, Dongho Kim, Ja Young Han, Min Sik Jang, Jung Ik Lee, Hong Ku Shim, Cheon Min Kim, Choon Sup Yoon

Department of Chemistry

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

15 Citations (Scopus)

Abstract

Photoinduced absorption spectra and their temporal profiles of poly(para-phenylenevinylene) thin film exhibit a strong correlation with an appearance of spectrally narrowed emission bands. The dependence of transient absorption signals on excitation and probe power denotes much lower saturation intensity in photoinduced absorption than that in stimulated emission arising from the identical photoexcitations, singlet excitons. We interpreted the peculiar emission bands in terms of superradiance or superfluorescence with a time constant of around 1 ps rather than amplification of spontaneous emission from uncorrelated emitters.

Original language	English
Pages (from-to)	212-214
Number of pages	3
Journal	Applied Physics Letters
Volume	74
Issue number	2
DOIs	https://doi.org/10.1063/1.123296
Publication status	Published - 1999 Jan 11

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.123296

Cite this

@article{5e5d5061798e40b2b2e73cb13c9760fc,

title = "Femtosecond pump-probe investigation on relaxation of photoexcitations and spectral narrowing of photoluminescence for poly(para-phenylenevinylene)",

abstract = "Photoinduced absorption spectra and their temporal profiles of poly(para-phenylenevinylene) thin film exhibit a strong correlation with an appearance of spectrally narrowed emission bands. The dependence of transient absorption signals on excitation and probe power denotes much lower saturation intensity in photoinduced absorption than that in stimulated emission arising from the identical photoexcitations, singlet excitons. We interpreted the peculiar emission bands in terms of superradiance or superfluorescence with a time constant of around 1 ps rather than amplification of spontaneous emission from uncorrelated emitters.",

author = "Jeoung, {Sae Chae} and Kim, {Yong Hee} and Dongho Kim and Han, {Ja Young} and Jang, {Min Sik} and Lee, {Jung Ik} and Shim, {Hong Ku} and Kim, {Cheon Min} and Yoon, {Choon Sup}",

year = "1999",

month = jan,

day = "11",

doi = "10.1063/1.123296",

language = "English",

volume = "74",

pages = "212--214",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "2",

}

TY - JOUR

T1 - Femtosecond pump-probe investigation on relaxation of photoexcitations and spectral narrowing of photoluminescence for poly(para-phenylenevinylene)

AU - Jeoung, Sae Chae

AU - Kim, Yong Hee

AU - Kim, Dongho

AU - Han, Ja Young

AU - Jang, Min Sik

AU - Lee, Jung Ik

AU - Shim, Hong Ku

AU - Kim, Cheon Min

AU - Yoon, Choon Sup

PY - 1999/1/11

Y1 - 1999/1/11

N2 - Photoinduced absorption spectra and their temporal profiles of poly(para-phenylenevinylene) thin film exhibit a strong correlation with an appearance of spectrally narrowed emission bands. The dependence of transient absorption signals on excitation and probe power denotes much lower saturation intensity in photoinduced absorption than that in stimulated emission arising from the identical photoexcitations, singlet excitons. We interpreted the peculiar emission bands in terms of superradiance or superfluorescence with a time constant of around 1 ps rather than amplification of spontaneous emission from uncorrelated emitters.

AB - Photoinduced absorption spectra and their temporal profiles of poly(para-phenylenevinylene) thin film exhibit a strong correlation with an appearance of spectrally narrowed emission bands. The dependence of transient absorption signals on excitation and probe power denotes much lower saturation intensity in photoinduced absorption than that in stimulated emission arising from the identical photoexcitations, singlet excitons. We interpreted the peculiar emission bands in terms of superradiance or superfluorescence with a time constant of around 1 ps rather than amplification of spontaneous emission from uncorrelated emitters.

UR - http://www.scopus.com/inward/record.url?scp=0000427871&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000427871&partnerID=8YFLogxK

U2 - 10.1063/1.123296

DO - 10.1063/1.123296

M3 - Article

AN - SCOPUS:0000427871

SN - 0003-6951

VL - 74

SP - 212

EP - 214

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

ER -

Femtosecond pump-probe investigation on relaxation of photoexcitations and spectral narrowing of photoluminescence for poly(para-phenylenevinylene)

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this