Soluable Peantacene and Antradithiophene Derivatives for Organic Semiconductor

• Main Authors: Jhe-Wei Jhuang, 莊哲維
• Other Authors: 陳銘洲
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/16958991103074543065

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 pentacene (Pen), five new organic semiconductor materials: 6,13-Bis(phenylethynyl)pentacene (BPE-Pen)、6,13-Bis(4-pentanoylphenylethynyl)pentacene (BPPE-Pen)、6,13-Bis(4-triethylsiliylphenylethynyl)pentacene (BTPE-Pen)、6,13-Bis(4-pentanoylphenyl)pentacene (BPP-Pen)、6,13-Bis(4-triethylsiliylphenyl)pentacene (BTE-Pen) were prepared. The second system is based on anthradithiophene (ADT), three new organic semiconductor materials: 5,11-Bis(phenylethynyl)anthradithiophene (BPE-ADT)、5,11-Bis(4-pentanoylphenylethynyl)antradithiophene (BBPE-ADT)、5,11-Bis(4-pentanoylphenyl)antradithiophene (BPP-ADT) were synthesized. BPE-Pen、BPE-ADT、BTE-Pen exhibited as P-type semiconductor。BPE-ADT shows the stability enhancement and with current mobility of 1.4x10-2 cm2/Vs, on/off ratio ~ 104 and threshold voltage -6.0V. The molecular structures of BPE-ADT and BPE-pen have been determined by single-crystal X-ray diffraction and reveal their herringbone packing and the phenyl group in both compounds are not coplanar to the central moiety, leading to a not very high mobility. The device fabrications of all the eight materials are currently assisted by Tobin J. Marks group at Northwestern University, where the solution process and vacuum deposition will be examined. Hopefully, better mobility and easier fabrication will be obtained in the future.