Benzo[1,2-b:4,5-b']bis[b]benzothiophene as solution processible organic semiconductor for field-effect transistors

Area of Science:

• Materials Science
• Organic Electronics
• Organic Chemistry

Background:

• Organic field-effect transistors (OFETs) are crucial for flexible electronics.
• Developing high-performance organic semiconductors is key to advancing OFET technology.
• Benzobisbenzothiophene derivatives offer potential for efficient charge transport.

Purpose of the Study:

• To synthesize novel coplanar benzobisbenzothiophene derivatives.
• To evaluate their performance in organic field-effect transistors.
• To explore solution-processable semiconductor materials.

Main Methods:

• A two-step synthesis procedure was employed.
• Triflic acid-induced ring-closure reaction was utilized for cyclization.
• Fabrication and characterization of solution-processed OFET devices.

Main Results:

• Coplanar benzobisbenzothiophene compounds were successfully synthesized.
• Solution-processed organic field-effect transistors were fabricated.
• A maximum hole mobility of 0.01 cm(2) V(-1) s(-1) was achieved.

Conclusions:

• The synthesized benzobisbenzothiophenes are suitable for organic field-effect transistor applications.
• The simple synthesis and solution processability are advantageous for device fabrication.
• The achieved mobility demonstrates the potential of these materials in organic electronics.