Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters

Michael Y. Wong; Gordon James Hedley; Guohua Xie; Lisa  Kolln; Ifor David William Samuel; Antonio Pertegás; Henk J. Bolink; Eli Zysman-Colman

doi:10.1021/acs.chemmater.5b03245

Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters

Michael Y. Wong, Gordon James Hedley, Guohua Xie, Lisa Kolln, Ifor David William Samuel, Antonio Pertegás, Henk J. Bolink, Eli Zysman-Colman^*

^*Corresponding author for this work

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

Abstract

Two novel charged organic thermally activated delayed fluorescence (TADF) emitters, 1 and 2, have been synthesized. Their TADF behavior is well-supported by the multiexponential decay of their emission (nanosecond and microsecond components) and the oxygen dependence of the photoluminescence quantum yields. Spin-coated electroluminescent devices have been fabricated to make light-emitting electrochemical cells (LEECs) and organic light-emitting diodes (OLEDs). The first example of a non-doped charged small organic molecule LEEC is reported and exhibited an external quantum efficiency (EQE) of 0.39% using 2. With a multilayer architecture, a solution-processed OLED device using neat 2 as the emitting layer gave an EQE of 5.1%, the highest reported to date for a nondoped solution-processed small molecule organic TADF OLED. These promising results open up a new area in light-emitting materials for the development of low-cost TADF LEECs.

Original language	English
Pages (from-to)	6535–6542
Journal	Chemistry of Materials
Volume	27
Issue number	19
Early online date	14 Sept 2015
DOIs	https://doi.org/10.1021/acs.chemmater.5b03245
Publication status	Published - 13 Oct 2015

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Colman_2015_CoM_Light_CC
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Wong, M. Y., Hedley, G. J., Xie, G., Kolln, L., Samuel, I. D. W., Pertegás, A., Bolink, H. J., & Zysman-Colman, E. (2015). Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters. Chemistry of Materials, 27(19), 6535–6542. https://doi.org/10.1021/acs.chemmater.5b03245

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title = "Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters",

abstract = "Two novel charged organic thermally activated delayed fluorescence (TADF) emitters, 1 and 2, have been synthesized. Their TADF behavior is well-supported by the multiexponential decay of their emission (nanosecond and microsecond components) and the oxygen dependence of the photoluminescence quantum yields. Spin-coated electroluminescent devices have been fabricated to make light-emitting electrochemical cells (LEECs) and organic light-emitting diodes (OLEDs). The first example of a non-doped charged small organic molecule LEEC is reported and exhibited an external quantum efficiency (EQE) of 0.39% using 2. With a multilayer architecture, a solution-processed OLED device using neat 2 as the emitting layer gave an EQE of 5.1%, the highest reported to date for a nondoped solution-processed small molecule organic TADF OLED. These promising results open up a new area in light-emitting materials for the development of low-cost TADF LEECs.",

author = "Wong, {Michael Y.} and Hedley, {Gordon James} and Guohua Xie and Lisa Kolln and Samuel, {Ifor David William} and Antonio Perteg{\'a}s and Bolink, {Henk J.} and Eli Zysman-Colman",

note = "EZ-C thanks the University of St Andrews for support. The authors are grateful to the EPSRC for financial support (grants EP/J01771X and EP/J00916). IDWS is a Royal Society Wolfson Research Merit Award Holder. ",

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doi = "10.1021/acs.chemmater.5b03245",

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Wong, MY, Hedley, GJ, Xie, G, Kolln, L, Samuel, IDW, Pertegás, A, Bolink, HJ & Zysman-Colman, E 2015, 'Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters', Chemistry of Materials, vol. 27, no. 19, pp. 6535–6542. https://doi.org/10.1021/acs.chemmater.5b03245

Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters. / Wong, Michael Y.; Hedley, Gordon James; Xie, Guohua et al.
In: Chemistry of Materials, Vol. 27, No. 19, 13.10.2015, p. 6535–6542.

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

TY - JOUR

T1 - Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters

AU - Wong, Michael Y.

AU - Hedley, Gordon James

AU - Xie, Guohua

AU - Kolln, Lisa

AU - Samuel, Ifor David William

AU - Pertegás, Antonio

AU - Bolink, Henk J.

AU - Zysman-Colman, Eli

N1 - EZ-C thanks the University of St Andrews for support. The authors are grateful to the EPSRC for financial support (grants EP/J01771X and EP/J00916). IDWS is a Royal Society Wolfson Research Merit Award Holder.

PY - 2015/10/13

Y1 - 2015/10/13

N2 - Two novel charged organic thermally activated delayed fluorescence (TADF) emitters, 1 and 2, have been synthesized. Their TADF behavior is well-supported by the multiexponential decay of their emission (nanosecond and microsecond components) and the oxygen dependence of the photoluminescence quantum yields. Spin-coated electroluminescent devices have been fabricated to make light-emitting electrochemical cells (LEECs) and organic light-emitting diodes (OLEDs). The first example of a non-doped charged small organic molecule LEEC is reported and exhibited an external quantum efficiency (EQE) of 0.39% using 2. With a multilayer architecture, a solution-processed OLED device using neat 2 as the emitting layer gave an EQE of 5.1%, the highest reported to date for a nondoped solution-processed small molecule organic TADF OLED. These promising results open up a new area in light-emitting materials for the development of low-cost TADF LEECs.

AB - Two novel charged organic thermally activated delayed fluorescence (TADF) emitters, 1 and 2, have been synthesized. Their TADF behavior is well-supported by the multiexponential decay of their emission (nanosecond and microsecond components) and the oxygen dependence of the photoluminescence quantum yields. Spin-coated electroluminescent devices have been fabricated to make light-emitting electrochemical cells (LEECs) and organic light-emitting diodes (OLEDs). The first example of a non-doped charged small organic molecule LEEC is reported and exhibited an external quantum efficiency (EQE) of 0.39% using 2. With a multilayer architecture, a solution-processed OLED device using neat 2 as the emitting layer gave an EQE of 5.1%, the highest reported to date for a nondoped solution-processed small molecule organic TADF OLED. These promising results open up a new area in light-emitting materials for the development of low-cost TADF LEECs.

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EP - 6542

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 19

ER -

Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters

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Challening the Limits of Photonics: stru: Challenging the Limits of Photonics: Structured Light

Eli Zysman-Colman

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Light-emitting electrochemical cells and solution-processed organic light-emitting diodes using small molecule organic thermally activated delayed fluorescence emitters

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Challening the Limits of Photonics: stru: Challenging the Limits of Photonics: Structured Light

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