E.-K. Lee,† M. Y. Lee,† A.-J. Choi, J.-Y. Kim, O. Y. Kweon, J.-H. Kim, J. Y. Jung, T.-J. Shin, J. H. Oh,* J.-I. Park,* S. Y. Lee, “Phenyl derivative of dibenzothiopheno[6,5-b:6',5'-f]thieno[3,2-b]thiophene (DPh-DBTTT): Thermally stable organic semiconductor for high-performance organic field-effect transistors”, Adv. Electron. Mater. 2017, 3, 1700142. [†Contributed equally]

[Selected as a Front Cover Paper]

In order to improve device processability, it is important that organic semiconducting materials have good thermal durability. In article number 1700142, Joon Hak Oh, Jeong-Il Park, and co-workers describe the synthesis and chargetransport behavior of a new thermally durable organic semiconductor, dibenzothiopheno[6,5-b:6′,5′-f]thieno[3,2-b]thiophene (DPh-DBTTT), using crystallographic analysis and an organic field-effect transistor platform. Its outstanding electrical properties combined with thermal durability substantially extends the number of practical organic semiconductor applications.