UV photocurrent spectroscopy in poly(p-phenylene vinylene) and derivatives

A. Köhler; D. A. Dos Santos; D. Beljonne; Z. Shuai; J. L. Brédas; R. H. Friend; S. C. Moratti; A. B. Holmes

doi:10.1016/s0379-6779(96)04104-5

UV photocurrent spectroscopy in poly(p-phenylene vinylene) and derivatives

A. Köhler, D. A. Dos Santos, D. Beljonne, Z. Shuai, J. L. Brédas, R. H. Friend, S. C. Moratti, A. B. Holmes

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

13 Scopus citations

Abstract

We present photocurrent measurements of poly(p-phenylene vinylene) (PPV) and derivatives for photon energies up to 5.0 eV. We observe photocurrent peaks related to the first, second and third absorption peaks, which we associate with the dissociation of a succession of increasingly energetic excitons. We have performed INDO/SCI calculations for the five-ring PPV oligomer, which show different distributions of the electronic charge of the exciton wavefunction over the chain at different excitation energies. We discuss the significance of these states for the photoconduction in PPV and question the applicability of a band-based model.

Original language	English (US)
Pages (from-to)	675-676
Number of pages	2
Journal	Synthetic Metals
Volume	84
Issue number	1-3
DOIs	https://doi.org/10.1016/s0379-6779(96)04104-5
State	Published - Jan 1997
Externally published	Yes

Keywords

Photoconductivity
Poly(phenylene vinylene) and derivatives
Semi-empirical models and model calculations

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/s0379-6779(96)04104-5

Cite this

@article{3f39e9e185eb4b06b21064d69eecf23c,

title = "UV photocurrent spectroscopy in poly(p-phenylene vinylene) and derivatives",

abstract = "We present photocurrent measurements of poly(p-phenylene vinylene) (PPV) and derivatives for photon energies up to 5.0 eV. We observe photocurrent peaks related to the first, second and third absorption peaks, which we associate with the dissociation of a succession of increasingly energetic excitons. We have performed INDO/SCI calculations for the five-ring PPV oligomer, which show different distributions of the electronic charge of the exciton wavefunction over the chain at different excitation energies. We discuss the significance of these states for the photoconduction in PPV and question the applicability of a band-based model.",

keywords = "Photoconductivity, Poly(phenylene vinylene) and derivatives, Semi-empirical models and model calculations",

author = "A. K{\"o}hler and {Dos Santos}, {D. A.} and D. Beljonne and Z. Shuai and Br{\'e}das, {J. L.} and Friend, {R. H.} and Moratti, {S. C.} and Holmes, {A. B.}",

year = "1997",

month = jan,

doi = "10.1016/s0379-6779(96)04104-5",

language = "English (US)",

volume = "84",

pages = "675--676",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - UV photocurrent spectroscopy in poly(p-phenylene vinylene) and derivatives

AU - Köhler, A.

AU - Dos Santos, D. A.

AU - Beljonne, D.

AU - Shuai, Z.

AU - Brédas, J. L.

AU - Friend, R. H.

AU - Moratti, S. C.

AU - Holmes, A. B.

PY - 1997/1

Y1 - 1997/1

N2 - We present photocurrent measurements of poly(p-phenylene vinylene) (PPV) and derivatives for photon energies up to 5.0 eV. We observe photocurrent peaks related to the first, second and third absorption peaks, which we associate with the dissociation of a succession of increasingly energetic excitons. We have performed INDO/SCI calculations for the five-ring PPV oligomer, which show different distributions of the electronic charge of the exciton wavefunction over the chain at different excitation energies. We discuss the significance of these states for the photoconduction in PPV and question the applicability of a band-based model.

AB - We present photocurrent measurements of poly(p-phenylene vinylene) (PPV) and derivatives for photon energies up to 5.0 eV. We observe photocurrent peaks related to the first, second and third absorption peaks, which we associate with the dissociation of a succession of increasingly energetic excitons. We have performed INDO/SCI calculations for the five-ring PPV oligomer, which show different distributions of the electronic charge of the exciton wavefunction over the chain at different excitation energies. We discuss the significance of these states for the photoconduction in PPV and question the applicability of a band-based model.

KW - Photoconductivity

KW - Poly(phenylene vinylene) and derivatives

KW - Semi-empirical models and model calculations

UR - http://www.scopus.com/inward/record.url?scp=0030712837&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030712837&partnerID=8YFLogxK

U2 - 10.1016/s0379-6779(96)04104-5

DO - 10.1016/s0379-6779(96)04104-5

M3 - Article

AN - SCOPUS:0030712837

SN - 0379-6779

VL - 84

SP - 675

EP - 676

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

ER -

UV photocurrent spectroscopy in poly(p-phenylene vinylene) and derivatives

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this