Emission characteristics in solution-processed asymmetric white alternating current field-induced polymer electroluminescent devices

Yonghua Chen; Yingdong Xia; Gregory M. Smith; Yu Gu; Chuluo Yang; David L. Carroll

doi:10.1063/1.4774317

Emission characteristics in solution-processed asymmetric white alternating current field-induced polymer electroluminescent devices

Yonghua Chen, Yingdong Xia, Gregory M. Smith, Yu Gu, Chuluo Yang, David L. Carroll

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

19 Scopus citations

Abstract

In this work, the emission characteristics of a blue fluorophor poly(9, 9-dioctylfluorene) (PFO) combined with a red emitting dye: Bis(2-methyl- dibenzo[f,h]quinoxaline)(acetylacetonate)iridium (III) [Ir(MDQ) ₂(acac)], are examined in two different asymmetric white alternating current field-induced polymer electroluminescent (FIPEL) device structures. The first is a top-contact device in which the triplet transfer is observed resulting in the concentration-dependence of the emission similar to the standard organic light-emitting diode (OLED) structure. The second is a bottom-contact device which, however, exhibits concentration-independence of emission. Specifically, both dye emission and polymer emission are found for the concentrations as high as 10% by weight of the dye in the emitter. We attribute this to the significant different carrier injection characteristics of the two FIPEL devices. Our results suggest a simple and easy way to realize high-quality white emission.

Original language	English
Article number	013307
Journal	Applied Physics Letters
Volume	102
Issue number	1
DOIs	https://doi.org/10.1063/1.4774317
State	Published - 7 Jan 2013
Externally published	Yes

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title = "Emission characteristics in solution-processed asymmetric white alternating current field-induced polymer electroluminescent devices",

abstract = "In this work, the emission characteristics of a blue fluorophor poly(9, 9-dioctylfluorene) (PFO) combined with a red emitting dye: Bis(2-methyl- dibenzo[f,h]quinoxaline)(acetylacetonate)iridium (III) [Ir(MDQ) 2(acac)], are examined in two different asymmetric white alternating current field-induced polymer electroluminescent (FIPEL) device structures. The first is a top-contact device in which the triplet transfer is observed resulting in the concentration-dependence of the emission similar to the standard organic light-emitting diode (OLED) structure. The second is a bottom-contact device which, however, exhibits concentration-independence of emission. Specifically, both dye emission and polymer emission are found for the concentrations as high as 10% by weight of the dye in the emitter. We attribute this to the significant different carrier injection characteristics of the two FIPEL devices. Our results suggest a simple and easy way to realize high-quality white emission.",

author = "Yonghua Chen and Yingdong Xia and Smith, {Gregory M.} and Yu Gu and Chuluo Yang and Carroll, {David L.}",

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doi = "10.1063/1.4774317",

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T1 - Emission characteristics in solution-processed asymmetric white alternating current field-induced polymer electroluminescent devices

AU - Chen, Yonghua

AU - Xia, Yingdong

AU - Smith, Gregory M.

AU - Gu, Yu

AU - Yang, Chuluo

AU - Carroll, David L.

PY - 2013/1/7

Y1 - 2013/1/7

N2 - In this work, the emission characteristics of a blue fluorophor poly(9, 9-dioctylfluorene) (PFO) combined with a red emitting dye: Bis(2-methyl- dibenzo[f,h]quinoxaline)(acetylacetonate)iridium (III) [Ir(MDQ) 2(acac)], are examined in two different asymmetric white alternating current field-induced polymer electroluminescent (FIPEL) device structures. The first is a top-contact device in which the triplet transfer is observed resulting in the concentration-dependence of the emission similar to the standard organic light-emitting diode (OLED) structure. The second is a bottom-contact device which, however, exhibits concentration-independence of emission. Specifically, both dye emission and polymer emission are found for the concentrations as high as 10% by weight of the dye in the emitter. We attribute this to the significant different carrier injection characteristics of the two FIPEL devices. Our results suggest a simple and easy way to realize high-quality white emission.

AB - In this work, the emission characteristics of a blue fluorophor poly(9, 9-dioctylfluorene) (PFO) combined with a red emitting dye: Bis(2-methyl- dibenzo[f,h]quinoxaline)(acetylacetonate)iridium (III) [Ir(MDQ) 2(acac)], are examined in two different asymmetric white alternating current field-induced polymer electroluminescent (FIPEL) device structures. The first is a top-contact device in which the triplet transfer is observed resulting in the concentration-dependence of the emission similar to the standard organic light-emitting diode (OLED) structure. The second is a bottom-contact device which, however, exhibits concentration-independence of emission. Specifically, both dye emission and polymer emission are found for the concentrations as high as 10% by weight of the dye in the emitter. We attribute this to the significant different carrier injection characteristics of the two FIPEL devices. Our results suggest a simple and easy way to realize high-quality white emission.

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DO - 10.1063/1.4774317

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VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Emission characteristics in solution-processed asymmetric white alternating current field-induced polymer electroluminescent devices

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