Soluble ADT and diamine-terphenyl derivatives for OTFT material

• Main Authors: Peng-Yi Huang, 黃鵬毅
• Other Authors: 陳銘洲
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/77804112553194711003

碩士 === 國立中央大學 === 化學研究所 === 95 === Two new soluble organic semiconductor material systems were investigated. The first system is based on anthradithiophene (ADT), three new organic semiconductor materials: 5,11-dithien-2-ylanthradithiophene (DTADT), 5,11-bis(5-carbaldehydethien-2-yl)anthradithiophene (BATADT), and 5,11-bis(5-carbaldbutylaminothien-2-yl)anthradithiophene (BBTADT) were synthesized. The second system is based on p-terphenyl diamine (TDA), two new organic semiconductor materials: N,N’-bis[(5-butyl-2-thienyl)methylene]-p-terphenyl diamine (BTTDA), and N,N’-bis[(5-triethylsilyl-2-thienyl)methylene]-p-terphenyl diamine (TES-TTDA) were prepared. BATADT with an electron withdrawing aldehyde functional group on the central thiophene shows the stability enhancement and demonstrates a p-type character with current mobility of 2.1x10-5 cm2/Vs, on/off ratio ~ 104 and threshold voltage -31V. The devices fabrication of all the five materials are currently assisted by Tobin J. Marks group at Northwestern University, where the solution process and vacuum deposition will be examined. Hopefully, better mobilities and easier fabrication will be obtained in the future.