Recent progress of high performance organic thin film field-effect transistors

Two new regiospecific biphenyl end-capped bithiazole co-oligomers, BP2Tz(in) and BP2Tz(out), showed high hole mobilities of 3.5 and 0.4 cm2 V−1 s−1, respectively, in thin film field effect transistors.

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Molecular-Wetting Control by Ultrasmooth Pentacene Buffer for High-crystallinity Organic Field-Effect Transistors

MRS Proceedings ◽

10.1557/proc-0965-s05-05 ◽

2006 ◽

Vol 965 ◽

Author(s):

Kenji Itaka ◽

Mitsugu Yamashiro ◽

Jun Yamaguchi ◽

Masamitsu Haemori ◽

Seiichiro Yaginuma ◽

...

Keyword(s):

Thin Film ◽

Thin Films ◽

Molecular Electronics ◽

Field Effect ◽

High Performance ◽

Organic Materials ◽

Field Effect Transistors ◽

Organic Thin Film ◽

Dielectric Substrates ◽

Pi Orbitals

ABSTRACTOrganic thin film devices are of interest for a variety of forthcoming ubiquitous electronics applications. In order to build ubiquitous high-performance devices, it is necessary to fabricate crystalline thin films of various organic materials onto “ubiquitous substrates” that are dictated by applications. However, many organic thin films crystallize only on a limited selection of substrates. Unfortunately, promising organic molecules, which have a large overlap of pi-orbitals between molecules, cannot migrate freely on a substrate because of stronger cohesion between molecules than interaction between the molecule and the substrate. Therefore, enhancement of the molecule-substrate interaction, i.e. ‘molecular wettability’ should promote crystallization. We found that an ultrasmooth monolayer of pentacene (C22H14), which can be grown on many general dielectric substrates, changes the molecular wettability of a substrate for other poorly wettable organic materials. We also demonstrate that a field effect transistor (FET) using a crystalline C60 thin film on a pentacene-buffered substrate can have a mobility of 4.9 cm2/Vs, which is 5-fold higher than that of C60 FETs without the buffer. Molecular wetting-controlled substrates can thus offer a general solution to the fabrication of high-performance crystalline plastic and molecular electronics.

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2,2'-(Arylenedivinylene)bis-8-hydroxyquinolines exhibiting aromatic π-π stacking interactions as solution-processable p-type organic semiconductors for high-performance organic field effect transistors

Materials Advances ◽

10.1039/d1ma00215e ◽

2021 ◽

Author(s):

Suman Yadav ◽

Shivani Sharma ◽

Satinder K Sharma ◽

Chullikkattil P. Pradeep

Keyword(s):

Organic Semiconductors ◽

Field Effect ◽

High Performance ◽

Field Effect Transistor ◽

Field Effect Transistors ◽

Organic Field Effect Transistors ◽

Organic Thin Film ◽

Effect Transistor ◽

Solution Processable ◽

P Type

Solution-processable organic semiconductors capable of functioning at low operating voltages (~5 V) are in demand for organic field-effect transistor (OFET) applications. Exploration of new classes of compounds as organic thin-film...

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