Towards Colorless Transparent Organic Transistors: Potential of Benzothieno[3,2-b]benzothiophene-Based Wide-Gap Semiconductors

Colorless, highly transparent organic thin‐film transistors (TOTFTs) with high performance are realized based on benzothieno[3,2‐b]benzothiophene (BTBT) derivatives that simultaneously exhibit a wide energy gap and high transport properties. Multilayer transparent source/drain electrodes maintain the transparency, and ultrathin fluoropolymer dielectric layers enable stable, low‐voltage operation of the proposed TOTFTs.