Organic TFTs Exhibiting Band-Like Transport

Organic thin-film transistors (OTFTs) are the basic building blocks for flexible and stretchable electronics. As organic semiconductor films usually contain significant structural and energetic disorder, charge carriers hop between localized states for charge transport, and thus the mobility of OTFTs generally shows thermally activated behavior, i.e., the mobility increases with increasing temperature. The increase of mobility with decreasing temperature, which is the so-called band-like transport, has been reported in single-crystal organic transistors but rarely been reported in OTFTs by far.