Electroabsorption studies of PPV and MEH-PPV

S. J. Martin; Helen Mellor; Donal D.C. Bradley; P. L. Burn

doi:10.1016/S0925-3467(97)00153-5

Electroabsorption studies of PPV and MEH-PPV

S. J. Martin, Helen Mellor, Donal D.C. Bradley, P. L. Burn

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

38 Scopus citations

Abstract

We report the results of an electroabsorption (EA) spectroscopy study of the electronic structure of the conjugated polymer PPV and its soluble derivative MEH-PPV. We find that the EA response of both polymers is dominated by a Stark shift of the IBu exciton. Comparison of the EA spectrum with the Third Harmonic Generation (THG) and two-photon fluorescence spectra for PPV allows us to address the question of the exciton binding energy in these materials. We estimate the binding energy to be 0.8(±0.15) eV for PPV and 0.7(±0.15) eV for MEH-PPV. We discuss the difference between the optically determined binding energy and that estimated via indirect electrical methods. We also present data for the EA response of higher lying transitions and discuss these in terms of current theoretical models. © 1998 Elsevier Science B.V.

Original language	English (US)
Journal	Optical Materials
Volume	9
Issue number	1-4
DOIs	https://doi.org/10.1016/S0925-3467(97)00153-5
State	Published - Jan 1 1998
Externally published	Yes

Access to Document

10.1016/S0925-3467(97)00153-5

Cite this

@article{376e998a54b7437c8ed78cb7d870f71c,

title = "Electroabsorption studies of PPV and MEH-PPV",

abstract = "We report the results of an electroabsorption (EA) spectroscopy study of the electronic structure of the conjugated polymer PPV and its soluble derivative MEH-PPV. We find that the EA response of both polymers is dominated by a Stark shift of the IBu exciton. Comparison of the EA spectrum with the Third Harmonic Generation (THG) and two-photon fluorescence spectra for PPV allows us to address the question of the exciton binding energy in these materials. We estimate the binding energy to be 0.8(±0.15) eV for PPV and 0.7(±0.15) eV for MEH-PPV. We discuss the difference between the optically determined binding energy and that estimated via indirect electrical methods. We also present data for the EA response of higher lying transitions and discuss these in terms of current theoretical models. {\textcopyright} 1998 Elsevier Science B.V.",

author = "Martin, {S. J.} and Helen Mellor and Bradley, {Donal D.C.} and Burn, {P. L.}",

note = "Generated from Scopus record by KAUST IRTS on 2019-11-27",

year = "1998",

month = jan,

day = "1",

doi = "10.1016/S0925-3467(97)00153-5",

language = "English (US)",

volume = "9",

journal = "Optical Materials",

issn = "0925-3467",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - Electroabsorption studies of PPV and MEH-PPV

AU - Martin, S. J.

AU - Mellor, Helen

AU - Bradley, Donal D.C.

AU - Burn, P. L.

N1 - Generated from Scopus record by KAUST IRTS on 2019-11-27

PY - 1998/1/1

Y1 - 1998/1/1

N2 - We report the results of an electroabsorption (EA) spectroscopy study of the electronic structure of the conjugated polymer PPV and its soluble derivative MEH-PPV. We find that the EA response of both polymers is dominated by a Stark shift of the IBu exciton. Comparison of the EA spectrum with the Third Harmonic Generation (THG) and two-photon fluorescence spectra for PPV allows us to address the question of the exciton binding energy in these materials. We estimate the binding energy to be 0.8(±0.15) eV for PPV and 0.7(±0.15) eV for MEH-PPV. We discuss the difference between the optically determined binding energy and that estimated via indirect electrical methods. We also present data for the EA response of higher lying transitions and discuss these in terms of current theoretical models. © 1998 Elsevier Science B.V.

AB - We report the results of an electroabsorption (EA) spectroscopy study of the electronic structure of the conjugated polymer PPV and its soluble derivative MEH-PPV. We find that the EA response of both polymers is dominated by a Stark shift of the IBu exciton. Comparison of the EA spectrum with the Third Harmonic Generation (THG) and two-photon fluorescence spectra for PPV allows us to address the question of the exciton binding energy in these materials. We estimate the binding energy to be 0.8(±0.15) eV for PPV and 0.7(±0.15) eV for MEH-PPV. We discuss the difference between the optically determined binding energy and that estimated via indirect electrical methods. We also present data for the EA response of higher lying transitions and discuss these in terms of current theoretical models. © 1998 Elsevier Science B.V.

UR - https://linkinghub.elsevier.com/retrieve/pii/S0925346797001535

UR - http://www.scopus.com/inward/record.url?scp=0031675760&partnerID=8YFLogxK

U2 - 10.1016/S0925-3467(97)00153-5

DO - 10.1016/S0925-3467(97)00153-5

M3 - Article

SN - 0925-3467

VL - 9

JO - Optical Materials

JF - Optical Materials

IS - 1-4

ER -

Electroabsorption studies of PPV and MEH-PPV

Abstract

Access to Document

Other files and links

Fingerprint

Cite this