Reactions of singlet excitons in tris-(8-hydroxyquinoline) aluminum

I. Sokolik; A. D. Walser; R. Priestley; C. W. Tang; R. Dorsinville

doi:10.1016/S0379-6779(96)04211-7

Reactions of singlet excitons in tris-(8-hydroxyquinoline) aluminum

I. Sokolik^*, A. D. Walser, R. Priestley, C. W. Tang, R. Dorsinville

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

Singlet excited state reactions in thin films of tris(8-hydroxyquinoline) aluminum (Alq₃), a well known emitter for organic electroluminescent devices, are described. Bimolecular recombination dominates the singlet exciton decay in pristine films at high intensities, thus decreasing the photoluminescence quantum efficiency and singlet lifetime. The measured rate constant of the singlet-singlet annihilation in Alq₃ films is γ_ss = (3.5±2.5) × 10^-11 cm³ s^-1. The value of the diffusion coefficient of singlet excitons estimated from γ_ss is D_s = (1.2±0.8) × 10^-5 cm²s^-1.

Original language	English
Pages (from-to)	921-922
Number of pages	2
Journal	Synthetic Metals
Volume	84
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(96)04211-7
Publication status	Published - Jan 1997
Externally published	Yes

Keywords

Organic semiconductors based on conjugated molecules
Photoluminescence
Time-resolved fast spectroscopy

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10.1016/S0379-6779(96)04211-7

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@article{ecf9ca0cee4047b9a44a7ae8d94793bd,

title = "Reactions of singlet excitons in tris-(8-hydroxyquinoline) aluminum",

abstract = "Singlet excited state reactions in thin films of tris(8-hydroxyquinoline) aluminum (Alq3), a well known emitter for organic electroluminescent devices, are described. Bimolecular recombination dominates the singlet exciton decay in pristine films at high intensities, thus decreasing the photoluminescence quantum efficiency and singlet lifetime. The measured rate constant of the singlet-singlet annihilation in Alq3 films is γss = (3.5±2.5) × 10-11 cm3 s-1. The value of the diffusion coefficient of singlet excitons estimated from γss is Ds = (1.2±0.8) × 10-5 cm2s-1.",

keywords = "Organic semiconductors based on conjugated molecules, Photoluminescence, Time-resolved fast spectroscopy",

author = "I. Sokolik and Walser, \{A. D.\} and R. Priestley and Tang, \{C. W.\} and R. Dorsinville",

year = "1997",

month = jan,

doi = "10.1016/S0379-6779(96)04211-7",

language = "English",

volume = "84",

pages = "921--922",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Reactions of singlet excitons in tris-(8-hydroxyquinoline) aluminum

AU - Sokolik, I.

AU - Walser, A. D.

AU - Priestley, R.

AU - Tang, C. W.

AU - Dorsinville, R.

PY - 1997/1

Y1 - 1997/1

N2 - Singlet excited state reactions in thin films of tris(8-hydroxyquinoline) aluminum (Alq3), a well known emitter for organic electroluminescent devices, are described. Bimolecular recombination dominates the singlet exciton decay in pristine films at high intensities, thus decreasing the photoluminescence quantum efficiency and singlet lifetime. The measured rate constant of the singlet-singlet annihilation in Alq3 films is γss = (3.5±2.5) × 10-11 cm3 s-1. The value of the diffusion coefficient of singlet excitons estimated from γss is Ds = (1.2±0.8) × 10-5 cm2s-1.

AB - Singlet excited state reactions in thin films of tris(8-hydroxyquinoline) aluminum (Alq3), a well known emitter for organic electroluminescent devices, are described. Bimolecular recombination dominates the singlet exciton decay in pristine films at high intensities, thus decreasing the photoluminescence quantum efficiency and singlet lifetime. The measured rate constant of the singlet-singlet annihilation in Alq3 films is γss = (3.5±2.5) × 10-11 cm3 s-1. The value of the diffusion coefficient of singlet excitons estimated from γss is Ds = (1.2±0.8) × 10-5 cm2s-1.

KW - Organic semiconductors based on conjugated molecules

KW - Photoluminescence

KW - Time-resolved fast spectroscopy

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:A1997WW43100390

UR - https://openalex.org/W2053872855

UR - https://www.scopus.com/pages/publications/0030653757

U2 - 10.1016/S0379-6779(96)04211-7

DO - 10.1016/S0379-6779(96)04211-7

M3 - Journal Article

SN - 0379-6779

VL - 84

SP - 921

EP - 922

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

ER -

Reactions of singlet excitons in tris-(8-hydroxyquinoline) aluminum

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Keywords

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