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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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

@article{2c2bcbf9182446be960b3f6c51db2d02,

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. ",

year = "2015",

month = oct,

day = "13",

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

language = "English",

volume = "27",

pages = "6535–6542",

journal = "Chemistry of Materials",

issn = "0897-4756",

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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.

UR - http://pubs.acs.org/doi/suppl/10.1021/acs.chemmater.5b03245

U2 - 10.1021/acs.chemmater.5b03245

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M3 - Article

SN - 0897-4756

VL - 27

SP - 6535

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

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