Impacts of degradation on annihilation and efficiency roll-off in organic light-emitting devices

John S. Bangsund; Russell J. Holmes

doi:10.1117/12.2528780

Impacts of degradation on annihilation and efficiency roll-off in organic light-emitting devices

John S. Bangsund, Russell J. Holmes

Chemical Engineering and Materials Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

Abstract

Efficiency roll-off and intrinsic luminance degradation are two of the primary limitations of organic light-emitting devices (OLEDs). While both phenomena have been studied separately in detail, they are rarely considered together. Previous analyses of OLED degradation have largely neglected changes in efficiency roll-off and bimolecular quenching, and the magnitude of these changes and their impact on device lifetime remains unclear. We present experimental and modeling results to quantify the magnitude of these changes, which we find range from ∼2% to above 10% in magnitude and increase in importance at high brightness or in devices with significant exciton-exciton annihilation.

Original language	English (US)
Title of host publication	Organic and Hybrid Light Emitting Materials and Devices XXIII
Editors	Chihaya Adachi, Jang-Joo Kim, Franky So
Publisher	SPIE
ISBN (Electronic)	9781510628793
DOIs	https://doi.org/10.1117/12.2528780
State	Published - 2019
Event	Organic and Hybrid Light Emitting Materials and Devices XXIII 2019 - San Diego, United States Duration: Aug 11 2019 → Aug 13 2019

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11093
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Organic and Hybrid Light Emitting Materials and Devices XXIII 2019
Country/Territory	United States
City	San Diego
Period	8/11/19 → 8/13/19

Bibliographical note

Publisher Copyright:
© 2019 SPIE.

Keywords

Bimolecular quenching
OLED
Operational lifetime
Phosphorescence
Photoluminescence
Triplet-polaron quenching

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10.1117/12.2528780

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Bangsund, J. S., & Holmes, R. J. (2019). Impacts of degradation on annihilation and efficiency roll-off in organic light-emitting devices. In C. Adachi, J.-J. Kim, & F. So (Eds.), Organic and Hybrid Light Emitting Materials and Devices XXIII Article 110930L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11093). SPIE. https://doi.org/10.1117/12.2528780

Impacts of degradation on annihilation and efficiency roll-off in organic light-emitting devices. / Bangsund, John S.; Holmes, Russell J.
Organic and Hybrid Light Emitting Materials and Devices XXIII. ed. / Chihaya Adachi; Jang-Joo Kim; Franky So. SPIE, 2019. 110930L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11093).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Bangsund, JS & Holmes, RJ 2019, Impacts of degradation on annihilation and efficiency roll-off in organic light-emitting devices. in C Adachi, J-J Kim & F So (eds), Organic and Hybrid Light Emitting Materials and Devices XXIII., 110930L, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11093, SPIE, Organic and Hybrid Light Emitting Materials and Devices XXIII 2019, San Diego, United States, 8/11/19. https://doi.org/10.1117/12.2528780

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title = "Impacts of degradation on annihilation and efficiency roll-off in organic light-emitting devices",

abstract = "Efficiency roll-off and intrinsic luminance degradation are two of the primary limitations of organic light-emitting devices (OLEDs). While both phenomena have been studied separately in detail, they are rarely considered together. Previous analyses of OLED degradation have largely neglected changes in efficiency roll-off and bimolecular quenching, and the magnitude of these changes and their impact on device lifetime remains unclear. We present experimental and modeling results to quantify the magnitude of these changes, which we find range from ∼2\% to above 10\% in magnitude and increase in importance at high brightness or in devices with significant exciton-exciton annihilation.",

keywords = "Bimolecular quenching, OLED, Operational lifetime, Phosphorescence, Photoluminescence, Triplet-polaron quenching",

author = "Bangsund, \{John S.\} and Holmes, \{Russell J.\}",

note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; Organic and Hybrid Light Emitting Materials and Devices XXIII 2019 ; Conference date: 11-08-2019 Through 13-08-2019",

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series = "Proceedings of SPIE - The International Society for Optical Engineering",

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AU - Bangsund, John S.

AU - Holmes, Russell J.

PY - 2019

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N2 - Efficiency roll-off and intrinsic luminance degradation are two of the primary limitations of organic light-emitting devices (OLEDs). While both phenomena have been studied separately in detail, they are rarely considered together. Previous analyses of OLED degradation have largely neglected changes in efficiency roll-off and bimolecular quenching, and the magnitude of these changes and their impact on device lifetime remains unclear. We present experimental and modeling results to quantify the magnitude of these changes, which we find range from ∼2% to above 10% in magnitude and increase in importance at high brightness or in devices with significant exciton-exciton annihilation.

AB - Efficiency roll-off and intrinsic luminance degradation are two of the primary limitations of organic light-emitting devices (OLEDs). While both phenomena have been studied separately in detail, they are rarely considered together. Previous analyses of OLED degradation have largely neglected changes in efficiency roll-off and bimolecular quenching, and the magnitude of these changes and their impact on device lifetime remains unclear. We present experimental and modeling results to quantify the magnitude of these changes, which we find range from ∼2% to above 10% in magnitude and increase in importance at high brightness or in devices with significant exciton-exciton annihilation.

KW - Bimolecular quenching

KW - OLED

KW - Operational lifetime

KW - Phosphorescence

KW - Photoluminescence

KW - Triplet-polaron quenching

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M3 - Conference contribution

AN - SCOPUS:85076499407

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Organic and Hybrid Light Emitting Materials and Devices XXIII

A2 - Adachi, Chihaya

A2 - Kim, Jang-Joo

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PB - SPIE

T2 - Organic and Hybrid Light Emitting Materials and Devices XXIII 2019

Y2 - 11 August 2019 through 13 August 2019

ER -

Impacts of degradation on annihilation and efficiency roll-off in organic light-emitting devices

Abstract

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Bibliographical note

Keywords

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