Related Experiment Video
Updated: May 8, 2026

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
Published on: June 18, 2013
V-shaped organic semiconductors with solution processability, high mobility, and high thermal durability.
Toshihiro Okamoto1, Chikahiko Mitsui, Masakazu Yamagishi
1The Institute of Scientific and Industrial Research (ISIR) Osaka University, 8-1 Mihogaoka, Ibaraki Osaka 567-0047, Japan Department of Advanced Materials Science School of Frontier Sciences The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.
New V-shaped organic semiconductors were synthesized for high-performance transistors. These materials exhibit excellent charge carrier mobility and thermal stability up to 150 °C.
Area of Science:
- Organic electronics
- Materials science
- Semiconductor physics
Background:
- Organic semiconductors are crucial for flexible electronics.
- Developing high-performance and thermally stable organic materials remains a challenge.
Purpose of the Study:
- To design and synthesize novel V-shaped organic semiconductors.
- To evaluate their performance in organic field-effect transistors (OFETs).
Main Methods:
- A scalable synthetic route was employed for V-shaped molecules.
- Solution-crystallized films were fabricated for device testing.
Main Results:
- The synthesized V-shaped organic semiconductors achieved high charge carrier mobilities up to 9.5 cm(2) V(-1) s(-1).
- The materials demonstrated significant thermal stability, withstanding temperatures up to 150 °C.
Conclusions:
- V-shaped organic semiconductors offer a promising platform for high-performance and robust electronic devices.
- The V-shaped core structure contributes to both high mobility and thermal durability.
Related Concept Videos
Types of Semiconductors
Semiconductors
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Metal-Semiconductor Junctions
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...
Fermi Level Dynamics
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...

