Electron correlation effects in electron-hole recombination and triplet-triplet scattering in organic light emitting diodes

S. Ramasesha; S. Mazumdar; Kunj Tandon; Mousumi Das

doi:10.1016/S0379-6779(03)00257-1

Electron correlation effects in electron-hole recombination and triplet-triplet scattering in organic light emitting diodes

S. Ramasesha, S. Mazumdar, Kunj Tandon, Mousumi Das

Research output: Contribution to journal › Conference article › peer-review

6 Scopus citations

Abstract

Using a time-dependent model many-body formulation, we follow the electron-hole recombination between a pair of oppositely charged polyene chains and triplet-triplet (T-T) scattering in π-conjugated systems. Electron correlations reduce the overall yields and also lead to large differences between the singlet and triplet yields. External electric field has a strong influence on the recombination products. The fraction of singlet yield, η, increases with the chain length. Heteroatoms also change this ratio significantly, as has been observed experimentally. The outcome of the triplet-triplet scattering is also significantly affected by electron correlations.

Original language	English (US)
Pages (from-to)	917-920
Number of pages	4
Journal	Synthetic Metals
Volume	139
Issue number	3
DOIs	https://doi.org/10.1016/S0379-6779(03)00257-1
State	Published - Oct 9 2003
Event	Proceedings of the Fifth International Topical Conference - Venice, Italy Duration: Feb 9 2003 → Feb 14 2003

Keywords

Electroluminescence
Lasers
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

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10.1016/S0379-6779(03)00257-1

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title = "Electron correlation effects in electron-hole recombination and triplet-triplet scattering in organic light emitting diodes",

abstract = "Using a time-dependent model many-body formulation, we follow the electron-hole recombination between a pair of oppositely charged polyene chains and triplet-triplet (T-T) scattering in π-conjugated systems. Electron correlations reduce the overall yields and also lead to large differences between the singlet and triplet yields. External electric field has a strong influence on the recombination products. The fraction of singlet yield, η, increases with the chain length. Heteroatoms also change this ratio significantly, as has been observed experimentally. The outcome of the triplet-triplet scattering is also significantly affected by electron correlations.",

keywords = "Electroluminescence, Lasers, Semi-empirical models and model calculations",

author = "S. Ramasesha and S. Mazumdar and Kunj Tandon and Mousumi Das",

note = "Funding Information: Work in Bangalore was supported by CSIR (India) and DST (India) through/INT/US (NSF-RP078)/2001. Work in Arizona was supported by NSF-INT-0138051, NSF-DMR-0101659 and NSF-ECS-0108696.; Proceedings of the Fifth International Topical Conference ; Conference date: 09-02-2003 Through 14-02-2003",

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TY - JOUR

T1 - Electron correlation effects in electron-hole recombination and triplet-triplet scattering in organic light emitting diodes

AU - Ramasesha, S.

AU - Mazumdar, S.

AU - Tandon, Kunj

AU - Das, Mousumi

N1 - Funding Information: Work in Bangalore was supported by CSIR (India) and DST (India) through/INT/US (NSF-RP078)/2001. Work in Arizona was supported by NSF-INT-0138051, NSF-DMR-0101659 and NSF-ECS-0108696.

PY - 2003/10/9

Y1 - 2003/10/9

N2 - Using a time-dependent model many-body formulation, we follow the electron-hole recombination between a pair of oppositely charged polyene chains and triplet-triplet (T-T) scattering in π-conjugated systems. Electron correlations reduce the overall yields and also lead to large differences between the singlet and triplet yields. External electric field has a strong influence on the recombination products. The fraction of singlet yield, η, increases with the chain length. Heteroatoms also change this ratio significantly, as has been observed experimentally. The outcome of the triplet-triplet scattering is also significantly affected by electron correlations.

AB - Using a time-dependent model many-body formulation, we follow the electron-hole recombination between a pair of oppositely charged polyene chains and triplet-triplet (T-T) scattering in π-conjugated systems. Electron correlations reduce the overall yields and also lead to large differences between the singlet and triplet yields. External electric field has a strong influence on the recombination products. The fraction of singlet yield, η, increases with the chain length. Heteroatoms also change this ratio significantly, as has been observed experimentally. The outcome of the triplet-triplet scattering is also significantly affected by electron correlations.

KW - Electroluminescence

KW - Lasers

KW - Semi-empirical models and model calculations

UR - http://www.scopus.com/inward/record.url?scp=0041827422&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0041827422&partnerID=8YFLogxK

U2 - 10.1016/S0379-6779(03)00257-1

DO - 10.1016/S0379-6779(03)00257-1

M3 - Conference article

AN - SCOPUS:0041827422

SN - 0379-6779

VL - 139

SP - 917

EP - 920

JO - Synthetic Metals

JF - Synthetic Metals

IS - 3

T2 - Proceedings of the Fifth International Topical Conference

Y2 - 9 February 2003 through 14 February 2003

ER -

Electron correlation effects in electron-hole recombination and triplet-triplet scattering in organic light emitting diodes

Abstract

Keywords

ASJC Scopus subject areas

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