Dibenzothiopheno[6,5-b:6鈥?5鈥?f]thieno[3,2-b]thiophene (DBTTT): High-Performance Small-Molecule Organic Semiconductor for Field-Effect Transistors

详细信息    查看全文

• 作者：Jeong-Il Park ; Jong Won Chung ; Joo-Young Kim ; Jiyoul Lee ; Ji Young Jung ; Bonwon Koo ; Bang-Lin Lee ; Soon W. Lee ; Yong Wan Jin ; Sang Yoon Lee
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：September 30, 2015
• 年：2015
• 卷：137
• 期：38
• 页码：12175-12178
• 全文大小：332K
• ISSN：1520-5126

文摘

We present the synthesis, characterization, and structural analysis of a thiophene-rich heteroacene, dibenzothiopheno[6,5-b:6鈥?5鈥?f]thieno[3,2-b]thiophene (DBTTT) as well as its application in field-effect transistors. The design of DBTTT is based on the enhancement of intermolecular charge transfer through strong S鈥揝 interactions. Crystal structure analysis showed that the intermolecular 蟺鈥撓€ distance is shortened and that the packing density is higher than those of the electronically equivalent benzene analogue, dinaphtho-[2,3-b:2鈥?3鈥?f]thieno[3,2-b]thiophene (DNTT). The highest hole mobility we obtained in polycrystalline DBTTT thin-film transistors was 19.3 cm²路V^鈥?路s^鈥?, six times higher than that of DNTT-based transistors. The observed isotropic angular mobilities and thermal stabilities at temperatures up to 140 掳C indicate the great potential of DBTTT for attaining device uniformity and processability.