| 초록 |
Organic materials which have high charge-carrier mobility have attracted great interest for various potential applications. We are interested in solution-processable materials because they may allow large area fabrications by printing or other low cost fabrication techniques. Recently, DPh-BTBT with high mobility and stability was reported, but low solubility is a serious obstacle in solution-process application. And modified materials of the BTBT with various alkyl chains showed high mobilities of spin-coated films in top contact device structures. We investigated modifying the BTBT for increasing solubility with various tail parts. The resulting materials are soluble and they have liquid crystalline phases. The liquid crystallinity and high crystallinity resulted in desired alignment and ordering of active materials on dielectric layer. We fabricated and characterized OTFT devices with bottom contact structures by solution-process such as spin coating and drop casting. |
