Bright red emission from single layer polymer light-emitting devices based on blends of regioregular P3HT and F8Bt

Youngkyoo Kim; Donal D.C. Bradley

doi:10.1016/j.cap.2003.11.090

Bright red emission from single layer polymer light-emitting devices based on blends of regioregular P3HT and F8Bt

Youngkyoo Kim, Donal D.C. Bradley

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56 Scopus citations

Abstract

Bright red polymer light-emitting devices were fabricated with blends of regioregular poly(3-hexylthiophene) (P3HT) and poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) as an emission layer. The blend films that had more than 10 wt.% P3HT exhibit high device luminance (>10,000 cd/m2) and efficiency (1.8 cd/A, consistent with a relatively large Förster radius for energy transfer from F8BT to P3HT. The emission colour was close to red but with a small orange component (CIE x = 0.64, y = 0.36). Effective blocking of electrons and excitons by inserting a blocking layer is expected to be necessary to achieve an electroluminescence efficiency commensurate with the photoluminescence quantum efficiency of the blend films (>17%). © 2004 Elsevier B.V. All rights reserved.

Original language	English (US)
Journal	Current Applied Physics
Volume	5
Issue number	3
DOIs	https://doi.org/10.1016/j.cap.2003.11.090
State	Published - Jan 1 2005
Externally published	Yes

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10.1016/j.cap.2003.11.090

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title = "Bright red emission from single layer polymer light-emitting devices based on blends of regioregular P3HT and F8Bt",

abstract = "Bright red polymer light-emitting devices were fabricated with blends of regioregular poly(3-hexylthiophene) (P3HT) and poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) as an emission layer. The blend films that had more than 10 wt.% P3HT exhibit high device luminance (>10,000 cd/m2) and efficiency (1.8 cd/A, consistent with a relatively large F{\"o}rster radius for energy transfer from F8BT to P3HT. The emission colour was close to red but with a small orange component (CIE x = 0.64, y = 0.36). Effective blocking of electrons and excitons by inserting a blocking layer is expected to be necessary to achieve an electroluminescence efficiency commensurate with the photoluminescence quantum efficiency of the blend films (>17%). {\textcopyright} 2004 Elsevier B.V. All rights reserved.",

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AU - Kim, Youngkyoo

AU - Bradley, Donal D.C.

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PY - 2005/1/1

Y1 - 2005/1/1

N2 - Bright red polymer light-emitting devices were fabricated with blends of regioregular poly(3-hexylthiophene) (P3HT) and poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) as an emission layer. The blend films that had more than 10 wt.% P3HT exhibit high device luminance (>10,000 cd/m2) and efficiency (1.8 cd/A, consistent with a relatively large Förster radius for energy transfer from F8BT to P3HT. The emission colour was close to red but with a small orange component (CIE x = 0.64, y = 0.36). Effective blocking of electrons and excitons by inserting a blocking layer is expected to be necessary to achieve an electroluminescence efficiency commensurate with the photoluminescence quantum efficiency of the blend films (>17%). © 2004 Elsevier B.V. All rights reserved.

AB - Bright red polymer light-emitting devices were fabricated with blends of regioregular poly(3-hexylthiophene) (P3HT) and poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) as an emission layer. The blend films that had more than 10 wt.% P3HT exhibit high device luminance (>10,000 cd/m2) and efficiency (1.8 cd/A, consistent with a relatively large Förster radius for energy transfer from F8BT to P3HT. The emission colour was close to red but with a small orange component (CIE x = 0.64, y = 0.36). Effective blocking of electrons and excitons by inserting a blocking layer is expected to be necessary to achieve an electroluminescence efficiency commensurate with the photoluminescence quantum efficiency of the blend films (>17%). © 2004 Elsevier B.V. All rights reserved.

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U2 - 10.1016/j.cap.2003.11.090

DO - 10.1016/j.cap.2003.11.090

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VL - 5

JO - Current Applied Physics

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Bright red emission from single layer polymer light-emitting devices based on blends of regioregular P3HT and F8Bt

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