What do nonlinear optical spectroscopy and picosecond photinduced absorption have to say about excited states in conjugated polymers?

M. Chandross; S. Mazumdar

doi:10.1016/s0379-6779(97)80163-4

What do nonlinear optical spectroscopy and picosecond photinduced absorption have to say about excited states in conjugated polymers?

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

Abstract

We present a self-consistent picture of the excited state energy spectrum of poly(para-phenylene vinylene) based on theoretical calculations of exicted states and and experimental electroabsorption (EA) and picosecond photoinduced absorption measurements (PA). Our calculations place the one electron-one hole continuum (nB_u) at 0.9 ± 0.2 eV above the 1B_u exciton. This is in agreement with EA and ps PA in the i.r., which finds an even-parity exciton (the mA_g) about 0.7 eV away from the 1B_u. The high energy ps PA at 1.5 - 1.7 eV is to a biexciton whose energy is consistent with our estimates.

Original language	English (US)
Pages (from-to)	1095-1096
Number of pages	2
Journal	Synthetic Metals
Volume	85
Issue number	1-3
DOIs	https://doi.org/10.1016/s0379-6779(97)80163-4
State	Published - Mar 15 1997

Keywords

Multiphoton absorption spectroscopy
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(97)80163-4

Cite this

@article{1f7aea4728864cb5952401bed480067a,

title = "What do nonlinear optical spectroscopy and picosecond photinduced absorption have to say about excited states in conjugated polymers?",

abstract = "We present a self-consistent picture of the excited state energy spectrum of poly(para-phenylene vinylene) based on theoretical calculations of exicted states and and experimental electroabsorption (EA) and picosecond photoinduced absorption measurements (PA). Our calculations place the one electron-one hole continuum (nBu) at 0.9 ± 0.2 eV above the 1Bu exciton. This is in agreement with EA and ps PA in the i.r., which finds an even-parity exciton (the mAg) about 0.7 eV away from the 1Bu. The high energy ps PA at 1.5 - 1.7 eV is to a biexciton whose energy is consistent with our estimates.",

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

author = "M. Chandross and S. Mazumdar",

note = "Funding Information: This work was supported by the NSF (Grant No. ECS-9408810), the AFOSR (Contract No. F49620-93-l-0199), and the ONR (Grant No. N00014-94-1-0322). The authors acknowledge many fruitful discussions with Z .V. Vardeny.",

year = "1997",

month = mar,

day = "15",

doi = "10.1016/s0379-6779(97)80163-4",

language = "English (US)",

volume = "85",

pages = "1095--1096",

journal = "Synthetic Metals",

issn = "0379-6779",