3,3-Bicarbazole-Based Host Molecules for Solution-Processed Phosphorescent OLEDs

Jungwoon Kim; Suhan Lee; Jaemin Lee; Eunhee Lim; Byung Jun Jung

doi:10.3390/molecules23040847

3,3-Bicarbazole-Based Host Molecules for Solution-Processed Phosphorescent OLEDs

Jungwoon Kim, Suhan Lee, Jaemin Lee, Eunhee Lim, Byung Jun Jung

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

11 Scopus citations

Abstract

Solution-processed organic light-emitting diodes (OLEDs) are attractive due to their low-cost, large area displays, and lighting features. Small molecules as well as polymers can be used as host materials within the solution-processed emitting layer. Herein, we report two 3,3-bicarbazole-based host small molecules, which possess a structural isomer relationship. 9,9-Di-4-n-butylphenyl-9H,9H-3,3-bicarbazole (BCz-nBuPh) and 9,9-di-4-t-butylphenyl-9H,9H-3,3-bicarbazole (BCz-tBuPh) exhibited similar optical properties within solutions but different photoluminescence within films. A solution-processed green phosphorescent OLED with the BCz-tBuPh host exhibited a high maximum current efficiency and power efficiency of 43.1 cd/A and 40.0 lm/W, respectively, compared to the device with the BCz-nBuPh host.

Original language	English
Article number	847
Journal	Molecules
Volume	23
Issue number	4
DOIs	https://doi.org/10.3390/molecules23040847
State	Published - 2018

Keywords

Bicarbazole
Host
Phosphorescent OLED
Solution-processed OLED

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10.3390/molecules23040847

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title = "3,3-Bicarbazole-Based Host Molecules for Solution-Processed Phosphorescent OLEDs",

abstract = "Solution-processed organic light-emitting diodes (OLEDs) are attractive due to their low-cost, large area displays, and lighting features. Small molecules as well as polymers can be used as host materials within the solution-processed emitting layer. Herein, we report two 3,3-bicarbazole-based host small molecules, which possess a structural isomer relationship. 9,9-Di-4-n-butylphenyl-9H,9H-3,3-bicarbazole (BCz-nBuPh) and 9,9-di-4-t-butylphenyl-9H,9H-3,3-bicarbazole (BCz-tBuPh) exhibited similar optical properties within solutions but different photoluminescence within films. A solution-processed green phosphorescent OLED with the BCz-tBuPh host exhibited a high maximum current efficiency and power efficiency of 43.1 cd/A and 40.0 lm/W, respectively, compared to the device with the BCz-nBuPh host.",

keywords = "Bicarbazole, Host, Phosphorescent OLED, Solution-processed OLED",

author = "Jungwoon Kim and Suhan Lee and Jaemin Lee and Eunhee Lim and Jung, {Byung Jun}",

note = "Publisher Copyright: {\textcopyright} 2018 by the authors.",

year = "2018",

doi = "10.3390/molecules23040847",

language = "English",

volume = "23",

journal = "Molecules",

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T1 - 3,3-Bicarbazole-Based Host Molecules for Solution-Processed Phosphorescent OLEDs

AU - Kim, Jungwoon

AU - Lee, Suhan

AU - Lee, Jaemin

AU - Lim, Eunhee

AU - Jung, Byung Jun

PY - 2018

Y1 - 2018

N2 - Solution-processed organic light-emitting diodes (OLEDs) are attractive due to their low-cost, large area displays, and lighting features. Small molecules as well as polymers can be used as host materials within the solution-processed emitting layer. Herein, we report two 3,3-bicarbazole-based host small molecules, which possess a structural isomer relationship. 9,9-Di-4-n-butylphenyl-9H,9H-3,3-bicarbazole (BCz-nBuPh) and 9,9-di-4-t-butylphenyl-9H,9H-3,3-bicarbazole (BCz-tBuPh) exhibited similar optical properties within solutions but different photoluminescence within films. A solution-processed green phosphorescent OLED with the BCz-tBuPh host exhibited a high maximum current efficiency and power efficiency of 43.1 cd/A and 40.0 lm/W, respectively, compared to the device with the BCz-nBuPh host.

AB - Solution-processed organic light-emitting diodes (OLEDs) are attractive due to their low-cost, large area displays, and lighting features. Small molecules as well as polymers can be used as host materials within the solution-processed emitting layer. Herein, we report two 3,3-bicarbazole-based host small molecules, which possess a structural isomer relationship. 9,9-Di-4-n-butylphenyl-9H,9H-3,3-bicarbazole (BCz-nBuPh) and 9,9-di-4-t-butylphenyl-9H,9H-3,3-bicarbazole (BCz-tBuPh) exhibited similar optical properties within solutions but different photoluminescence within films. A solution-processed green phosphorescent OLED with the BCz-tBuPh host exhibited a high maximum current efficiency and power efficiency of 43.1 cd/A and 40.0 lm/W, respectively, compared to the device with the BCz-nBuPh host.

KW - Bicarbazole

KW - Host

KW - Phosphorescent OLED

KW - Solution-processed OLED

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U2 - 10.3390/molecules23040847

DO - 10.3390/molecules23040847

M3 - Article

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AN - SCOPUS:85045145709

SN - 1420-3049

VL - 23

JO - Molecules

JF - Molecules

IS - 4

M1 - 847

ER -

3,3-Bicarbazole-Based Host Molecules for Solution-Processed Phosphorescent OLEDs

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Keywords

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