TY - JOUR
T1 - Dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) thin-film transistors with improved performance and stability
AU - Zschieschang, Ute
AU - Ante, Frederik
AU - Kälblein, Daniel
AU - Yamamoto, Tatsuya
AU - Takimiya, Kazuo
AU - Kuwabara, Hirokazu
AU - Ikeda, Masaaki
AU - Sekitani, Tsuyoshi
AU - Someya, Takao
AU - Nimoth, Jan Blochwitz
AU - Klauk, Hagen
N1 - Funding Information:
The authors thank Richard Rook at CADiLAC Laser for providing high-quality shadow masks and Carmen Müller at the Max Planck Institute for Solid State Research for professional photography. We gratefully acknowledge financial support provided by the New Energy and Industrial Technology Development Organization (NEDO) of Japan.
PY - 2011/8
Y1 - 2011/8
N2 - Organic thin-film transistors based on the vacuum-deposited small-molecule conjugated semiconductor dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b] thiophene (DNTT) have been fabricated and characterized. The transistors have field-effect mobilities as large as 2 cm2/V s and an on/off ratio of 108. Owing to the large ionization potential of DNTT, the TFTs show excellent stability for periods of several months of storage in ambient air. Unipolar ring oscillators based on DNTT TFTs with a channel length of 10 μm oscillate with a signal propagation delay as short as 7 μsec per stage at a supply voltage of 5 V. We also show that DNTT TFTs with usefully small channel width/length ratio are able to drive blue organic LEDs to a brightness well above that required for active-matrix displays.
AB - Organic thin-film transistors based on the vacuum-deposited small-molecule conjugated semiconductor dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b] thiophene (DNTT) have been fabricated and characterized. The transistors have field-effect mobilities as large as 2 cm2/V s and an on/off ratio of 108. Owing to the large ionization potential of DNTT, the TFTs show excellent stability for periods of several months of storage in ambient air. Unipolar ring oscillators based on DNTT TFTs with a channel length of 10 μm oscillate with a signal propagation delay as short as 7 μsec per stage at a supply voltage of 5 V. We also show that DNTT TFTs with usefully small channel width/length ratio are able to drive blue organic LEDs to a brightness well above that required for active-matrix displays.
KW - Air stability
KW - Bias-stress stability
KW - Organic thin-film transistors
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U2 - 10.1016/j.orgel.2011.04.018
DO - 10.1016/j.orgel.2011.04.018
M3 - Article
AN - SCOPUS:79957663033
VL - 12
SP - 1370
EP - 1375
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
SN - 1566-1199
IS - 8
ER -