Polyaniline-Based Conducting Polymer Compositions with a High Work Function for Hole-Injection Layers in Organic Light-Emitting Diodes: Formation of Ohmic Contacts

被引：52

作者：

Choi, Mi-Ri ^{[1
]}

Woo, Seong-Hoon ^{[1
]}

Han, Tae-Hee ^{[1
]}

Lim, Kyung-Geun ^{[1
]}

Min, Sung-Yong ^{[1
]}

Yun, Won Min ^{[2
]}

Kwon, Oh Kwan ^{[2
]}

Park, Chan Eon ^{[2
]}

Kim, Kwan-Do ^{[3
]}

Shin, Hoon-Kyu ^{[3
]}

Kim, Myeong-Suk ^{[4
]}

Noh, Taeyong ^{[4
]}

Park, Jong Hyeok ^{[5
]}

Shin, Kyoung-Hwan ^{[6
]}

Jang, Jyongsik ^{[6
]}

Lee, Tae-Woo ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 790784, Gyeongbuk, South Korea

[2] Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 790784, Gyeongbuk, South Korea

[3] Natl Ctr Nanomat Technol, Pohang 790784, Gyungbuk, South Korea

[4] Samsung Mobile Displays, Yongin 466712, Gyeonggi Do, South Korea

[5] Sungkyunkwan Univ, Dept Chem Engn, Suwon 440746, Gyeonggi Do, South Korea

[6] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151742, South Korea

来源：

CHEMSUSCHEM | 2011年 / 4卷 / 03期

关键词：

charge-carrier injections; conducting materials; organic light-emitting diodes; materials science; polymers; EFFICIENT; DEVICES; INTERFACES; FILM;

D O I：

10.1002/cssc.201000338

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

It is a great challenge to develop solution-processed, polymeric hole-injection layers (HILs) that perform better than small molecular layers for realizing high-performance small-molecule organic light-emitting diodes (SM-OLEDs). We have greatly improved the injection efficiency and the current efficiency of SM-OLEDs by introducing conducting polymer compositions composed of polyaniline doped with polystyrene sulfonate and perfluorinated ionomer (PFI) as the HIL. During single spin-coating of conducting polymer compositions, the PFI layer was self-organized at the surface and greatly increased the film work function. It enhanced hole-injection efficiency and current efficiency by introducing a nearly ohmic contact and improving electron blocking. Our results demonstrate that solution-processed polyaniline HILs with tunable work functions are good candidates for reducing process costs and improving OLED performance.

引用

页码：363 / 368

页数：6

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