Nanoparticle-dispersed high-k organic-inorganic hybrid dielectrics for organic thin-film transistors

被引：29

作者：

Lee, Seong Hui ^{[1
]}

Jeong, Sunho ^{[1
]}

Moon, Jooho ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

来源：

ORGANIC ELECTRONICS | 2009年 / 10卷 / 05期

关键词：

Hybrid dielectric film; Sol-gel materials; Organic thin-film transistor; ZIRCONIA; CIRCUITS; SI;

D O I：

10.1016/j.orgel.2009.05.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We fabricated solution-processable thin gate dielectrics for organic thin-film transistors (OTFTs) using an organosiloxane-based organic-inorganic hybrid material. The electrical characteristics of the hybrid dielectrics were controlled by adjusting the zirconium alkoxide concentration. Microstructural observation and chemical analysis allow us to determine the influence of microstructure and composition on the electrical properties of the hybrid dielectrics. Our hybrid material is composed of three phases: ZrO2, ZrSiO4, and organosiloxane. OTFTs based on the hybrid dielectrics exhibited better electrical performance compared to transistors based on poly(4-vinyiphenol) (PVP). Using a dielectric with a higher dielectric constant and fewer hydroxyl groups enabled us to fabricate a transistor with a lower off-current, higher on/off current ratio, and lower threshold voltage. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：982 / 989

页数：8

共 25 条

[1] Highly dispersed mixed zirconia and hafnia nanoparticles in a silica matrix:: First example of a ZrO2-HfO2-SiO2 ternary oxide system [J].

Armelao, Lidia ;

Bertagnolli, Helmut ;

Bleiner, Davide ;

Groenewolt, Matthijs ;

Gross, Silvia ;

Krishnan, Venkata ;

Sada, Cinzia ;

Schubert, Ulrich ;

Tondello, Eugenio ;

Zattin, Andrea .

ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (10) :1671-1681

[2] Operating principle of polymer insulator organic thin-film transistors exposed to moisture -: art. no. 074504 [J].

Bäcklund, TG ;

Osterbacka, R ;

Stubb, H ;

Bobacka, J ;

Ivaska, A .

JOURNAL OF APPLIED PHYSICS, 2005, 98 (07)

[3] Zirconia enrichment in zircon sand by selective fungus-mediated bioleaching of silica [J].

Bansal, Vipul ;

Syed, Asad ;

Bhargava, Suresh K. ;

Ahmad, Absar ;

Sastry, Murali .

LANGMUIR, 2007, 23 (09) :4993-4998

[4]

Bao ZN, 2002, ADV FUNCT MATER, V12, P526, DOI 10.1002/1616-3028(20020805)12:8<526::AID-ADFM526>3.0.CO

[5]

2-S

[6]

Bluementhal W.B., 1958, The Chemical Behavior of Zirconium

[7] Grain-boundary-limited charge transport in solution-processed 6,13 bis(tri-isopropylsilylethynyl) pentacene thin film transistors [J].

Chen, Jihua ;

Tee, Chee Keong ;

Shtein, Max ;

Anthony, John ;

Martin, David C. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (11)

[8] Organic-inorganic hybrid materials as solution processible gate insulator for organic thin film transistors [J].

Choi, Chaun Gi ;

Bae, Byeong-Soo .

ORGANIC ELECTRONICS, 2007, 8 (06) :743-748

[9] High-stability ultrathin spin-on benzocyclobutene gate dielectric for polymer field-effect transistors [J].

Chua, LL ;

Ho, PKH ;

Sirringhaus, H ;

Friend, RH .

APPLIED PHYSICS LETTERS, 2004, 84 (17) :3400-3402

[10] Large-scale complementary integrated circuits based on organic transistors [J].

Crone, B ;

Dodabalapur, A ;

Lin, YY ;

Filas, RW ;

Bao, Z ;

LaDuca, A ;

Sarpeshkar, R ;

Katz, HE ;

Li, W .

NATURE, 2000, 403 (6769) :521-523

← 1 2 3 →