p-Doped p-phenylenediamine-substituted fluorenes for organic electroluminescent devices

Zhi Qiang Gao; Ping Fan Xia; Pik Kwan Lo; Bao Xiu Mi; Hoi Lam TAM; Ricky M S WONG; Kok Wai CHEAH; Chin H. Chen

doi:10.1016/j.orgel.2009.02.025

p-Doped p-phenylenediamine-substituted fluorenes for organic electroluminescent devices

Zhi Qiang Gao^*
, Ping Fan Xia
, Pik Kwan Lo
, Bao Xiu Mi
, Hoi Lam TAM
, Ricky M S WONG
, Kok Wai CHEAH
, Chin H. Chen

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

15 Citations (Scopus)

Abstract

Two novel p-phenylenediamine-substituted fluorenes have been designed and synthesized. Their applications as hole injection materials in organic electroluminescent devices were investigated. These materials show a high glass transition temperature and a good hole-transporting ability. It has been demonstrated that the 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) doped p-phenylene-diamine-substituted fluorenes, in which F4-TCNQ acts as p-type dopant, are highly conducting with a good hole-transporting property. The organic light emitting devices (OLEDs) utilizing these F4-TCNQ-doped materials as a hole injection layer were fabricated and investigated. The pure Alq₃-based OLED device shows a current efficiency of 5.2 cd/A at the current density of 20 mA/cm² and the operation lifetime is 1500 h with driving voltage increasing only about 0.7 mV/h. The device performance and stability of this hole injection material meet the benchmarks for the commercial requirements for OLED materials.

Original language	English
Pages (from-to)	666-673
Number of pages	8
Journal	Organic Electronics
Volume	10
Issue number	4
DOIs	https://doi.org/10.1016/j.orgel.2009.02.025
Publication status	Published - Jul 2009

User-Defined Keywords

Fluorene
Hole injection material
Hole transporting materials
Organic electroluminescent devices
p-Phenylenediamine

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10.1016/j.orgel.2009.02.025

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@article{e8cd7b7763ff4802ac5b6bf2b49560ea,

title = "p-Doped p-phenylenediamine-substituted fluorenes for organic electroluminescent devices",

abstract = "Two novel p-phenylenediamine-substituted fluorenes have been designed and synthesized. Their applications as hole injection materials in organic electroluminescent devices were investigated. These materials show a high glass transition temperature and a good hole-transporting ability. It has been demonstrated that the 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) doped p-phenylene-diamine-substituted fluorenes, in which F4-TCNQ acts as p-type dopant, are highly conducting with a good hole-transporting property. The organic light emitting devices (OLEDs) utilizing these F4-TCNQ-doped materials as a hole injection layer were fabricated and investigated. The pure Alq3-based OLED device shows a current efficiency of 5.2 cd/A at the current density of 20 mA/cm2 and the operation lifetime is 1500 h with driving voltage increasing only about 0.7 mV/h. The device performance and stability of this hole injection material meet the benchmarks for the commercial requirements for OLED materials.",

keywords = "Fluorene, Hole injection material, Hole transporting materials, Organic electroluminescent devices, p-Phenylenediamine",

author = "Gao, \{Zhi Qiang\} and Xia, \{Ping Fan\} and Lo, \{Pik Kwan\} and Mi, \{Bao Xiu\} and TAM, \{Hoi Lam\} and WONG, \{Ricky M S\} and CHEAH, \{Kok Wai\} and Chen, \{Chin H.\}",

note = "Funding Information: This work is supported by Guangdong-HK ITF (GHP/057/05), Research Grants Council of Hong Kong, Earmarked Research Grant HKBU 202507, Nanjing University of Posts and Telecommunications Grant NY207162 and Natural Science Foundation of Jiangsu High Education under Grant 08KJB430011.",

year = "2009",

month = jul,

doi = "10.1016/j.orgel.2009.02.025",

language = "English",

volume = "10",

pages = "666--673",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier B.V.",

number = "4",

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TY - JOUR

T1 - p-Doped p-phenylenediamine-substituted fluorenes for organic electroluminescent devices

AU - Gao, Zhi Qiang

AU - Xia, Ping Fan

AU - Lo, Pik Kwan

AU - Mi, Bao Xiu

AU - TAM, Hoi Lam

AU - WONG, Ricky M S

AU - CHEAH, Kok Wai

AU - Chen, Chin H.

N1 - Funding Information: This work is supported by Guangdong-HK ITF (GHP/057/05), Research Grants Council of Hong Kong, Earmarked Research Grant HKBU 202507, Nanjing University of Posts and Telecommunications Grant NY207162 and Natural Science Foundation of Jiangsu High Education under Grant 08KJB430011.

PY - 2009/7

Y1 - 2009/7

N2 - Two novel p-phenylenediamine-substituted fluorenes have been designed and synthesized. Their applications as hole injection materials in organic electroluminescent devices were investigated. These materials show a high glass transition temperature and a good hole-transporting ability. It has been demonstrated that the 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) doped p-phenylene-diamine-substituted fluorenes, in which F4-TCNQ acts as p-type dopant, are highly conducting with a good hole-transporting property. The organic light emitting devices (OLEDs) utilizing these F4-TCNQ-doped materials as a hole injection layer were fabricated and investigated. The pure Alq3-based OLED device shows a current efficiency of 5.2 cd/A at the current density of 20 mA/cm2 and the operation lifetime is 1500 h with driving voltage increasing only about 0.7 mV/h. The device performance and stability of this hole injection material meet the benchmarks for the commercial requirements for OLED materials.

AB - Two novel p-phenylenediamine-substituted fluorenes have been designed and synthesized. Their applications as hole injection materials in organic electroluminescent devices were investigated. These materials show a high glass transition temperature and a good hole-transporting ability. It has been demonstrated that the 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) doped p-phenylene-diamine-substituted fluorenes, in which F4-TCNQ acts as p-type dopant, are highly conducting with a good hole-transporting property. The organic light emitting devices (OLEDs) utilizing these F4-TCNQ-doped materials as a hole injection layer were fabricated and investigated. The pure Alq3-based OLED device shows a current efficiency of 5.2 cd/A at the current density of 20 mA/cm2 and the operation lifetime is 1500 h with driving voltage increasing only about 0.7 mV/h. The device performance and stability of this hole injection material meet the benchmarks for the commercial requirements for OLED materials.

KW - Fluorene

KW - Hole injection material

KW - Hole transporting materials

KW - Organic electroluminescent devices

KW - p-Phenylenediamine

UR - https://www.scopus.com/pages/publications/67349124857

U2 - 10.1016/j.orgel.2009.02.025

DO - 10.1016/j.orgel.2009.02.025

M3 - Journal article

AN - SCOPUS:67349124857

SN - 1566-1199

VL - 10

SP - 666

EP - 673

JO - Organic Electronics

JF - Organic Electronics

IS - 4

ER -

p-Doped p-phenylenediamine-substituted fluorenes for organic electroluminescent devices

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