Synthesis and electro-optical properties of carbazole derivatives for organic device applications

Ki Soo Kim; Seonju Jeong; Cham Kim; Jae Yong Ham; Younghwan Kwon; Byoung Dae Choi; Yoon Soo Han

doi:10.1016/j.synthmet.2009.06.009

Synthesis and electro-optical properties of carbazole derivatives for organic device applications

Ki Soo Kim, Seonju Jeong, Cham Kim, Jae Yong Ham, Younghwan Kwon, Byoung Dae Choi, Yoon Soo Han

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

19 Scopus citations

Abstract

Two materials, DNCz and TCzPB, which contain carbazole moieties and exhibit high band gap energies, were synthesized via C{single bond}N coupling and Suzuki coupling reactions, respectively. The ionization potential and electron affinity of the synthesized TCzPB were measured at 5.89 and 2.39 eV, respectively, implying that it is suitable for a host material. A doped multilayer device, ITO/DNTPD/NPD/TCzPB + Ir(ppy)₃/BCP/Alq₃/LiF/Al, exhibited a bright green emission with a maximum luminance of 27,200 cd/m² (17.6 cd/A at 18.0 V) when the synthesized TCzPB was used as the host material for a phosphorescent green dopant. The compound DNCz exhibited similar electronic energy levels to those of NPD, and was applied as a hole-transporting material. Bright green light originated from the Alq₃ layer was observed in the double layer device, ITO/DNCz/Alq₃/LiF/Al. The high hole-transporting property of DNCz was also demonstrated.

Original language	English
Pages (from-to)	1870-1875
Number of pages	6
Journal	Synthetic Metals
Volume	159
Issue number	17-18
DOIs	https://doi.org/10.1016/j.synthmet.2009.06.009
State	Published - Sep 2009

Bibliographical note

Funding Information:
The work described herein was financially supported by the DGIST Basic Research Program of the Ministry of Education, Science and Technology (MEST) of Korea.

Keywords

Carbazole
Electroluminescence
Hole-transporting material
Host material

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10.1016/j.synthmet.2009.06.009

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@article{8b24799fb91849ddbcab68e130fd3692,

title = "Synthesis and electro-optical properties of carbazole derivatives for organic device applications",

abstract = "Two materials, DNCz and TCzPB, which contain carbazole moieties and exhibit high band gap energies, were synthesized via C{single bond}N coupling and Suzuki coupling reactions, respectively. The ionization potential and electron affinity of the synthesized TCzPB were measured at 5.89 and 2.39 eV, respectively, implying that it is suitable for a host material. A doped multilayer device, ITO/DNTPD/NPD/TCzPB + Ir(ppy)3/BCP/Alq3/LiF/Al, exhibited a bright green emission with a maximum luminance of 27,200 cd/m2 (17.6 cd/A at 18.0 V) when the synthesized TCzPB was used as the host material for a phosphorescent green dopant. The compound DNCz exhibited similar electronic energy levels to those of NPD, and was applied as a hole-transporting material. Bright green light originated from the Alq3 layer was observed in the double layer device, ITO/DNCz/Alq3/LiF/Al. The high hole-transporting property of DNCz was also demonstrated.",

keywords = "Carbazole, Electroluminescence, Hole-transporting material, Host material",

author = "Kim, {Ki Soo} and Seonju Jeong and Cham Kim and Ham, {Jae Yong} and Younghwan Kwon and Choi, {Byoung Dae} and Han, {Yoon Soo}",

note = "Funding Information: The work described herein was financially supported by the DGIST Basic Research Program of the Ministry of Education, Science and Technology (MEST) of Korea.",

year = "2009",

month = sep,

doi = "10.1016/j.synthmet.2009.06.009",

language = "English",

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AU - Kim, Ki Soo

AU - Jeong, Seonju

AU - Kim, Cham

AU - Ham, Jae Yong

AU - Kwon, Younghwan

AU - Choi, Byoung Dae

AU - Han, Yoon Soo

N1 - Funding Information: The work described herein was financially supported by the DGIST Basic Research Program of the Ministry of Education, Science and Technology (MEST) of Korea.

PY - 2009/9

Y1 - 2009/9

N2 - Two materials, DNCz and TCzPB, which contain carbazole moieties and exhibit high band gap energies, were synthesized via C{single bond}N coupling and Suzuki coupling reactions, respectively. The ionization potential and electron affinity of the synthesized TCzPB were measured at 5.89 and 2.39 eV, respectively, implying that it is suitable for a host material. A doped multilayer device, ITO/DNTPD/NPD/TCzPB + Ir(ppy)3/BCP/Alq3/LiF/Al, exhibited a bright green emission with a maximum luminance of 27,200 cd/m2 (17.6 cd/A at 18.0 V) when the synthesized TCzPB was used as the host material for a phosphorescent green dopant. The compound DNCz exhibited similar electronic energy levels to those of NPD, and was applied as a hole-transporting material. Bright green light originated from the Alq3 layer was observed in the double layer device, ITO/DNCz/Alq3/LiF/Al. The high hole-transporting property of DNCz was also demonstrated.

AB - Two materials, DNCz and TCzPB, which contain carbazole moieties and exhibit high band gap energies, were synthesized via C{single bond}N coupling and Suzuki coupling reactions, respectively. The ionization potential and electron affinity of the synthesized TCzPB were measured at 5.89 and 2.39 eV, respectively, implying that it is suitable for a host material. A doped multilayer device, ITO/DNTPD/NPD/TCzPB + Ir(ppy)3/BCP/Alq3/LiF/Al, exhibited a bright green emission with a maximum luminance of 27,200 cd/m2 (17.6 cd/A at 18.0 V) when the synthesized TCzPB was used as the host material for a phosphorescent green dopant. The compound DNCz exhibited similar electronic energy levels to those of NPD, and was applied as a hole-transporting material. Bright green light originated from the Alq3 layer was observed in the double layer device, ITO/DNCz/Alq3/LiF/Al. The high hole-transporting property of DNCz was also demonstrated.

KW - Carbazole

KW - Electroluminescence

KW - Hole-transporting material

KW - Host material

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JO - Synthetic Metals

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ER -

Synthesis and electro-optical properties of carbazole derivatives for organic device applications

Abstract

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Keywords

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