Alkylated Dinaphtho[2,3-b:2′,3′-f]Thieno[3,2-b] Thiophenes (Cn-DNTTs): Organic Semiconductors for High-Performance Thin-Film Transistors

A series of alkylated dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophenes (C-n-DNTTs) are developed as vapor-processable organic semiconductors for organic thin-film transistors (OTFTs). All the C-n-DNTT-based OTFTs showed typical p-channel FET characteristics and among them, C-10-DNTT, possessing two n-decyl groups, gave excellent FET characteristics under the ambient conditions with mobility close to 8.0 cm(2)V(-1)s(-1) and I-on/I-off > 10(8).