Hexyl substitution of pentathienoacene toward a significant improvement in charge transport  

作　　者：Ping He Hantang Zhang Chunhui Xu Yonggang Zhen Huanli Dong Wenping Hu 

机构地区：[1]Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University [2]Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences [3]College of Chemistry and Material Science, Shandong Agriculture University [4]Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

出　　处：《Chinese Chemical Letters》2019年第4期903-905,共3页中国化学快报（英文版）

基　　金：financial support from the Ministry of Science and Technology of China (Nos. 2015CB856502, 2016YFB0401100 and 2017YFA0204503);the National Natural Science Foundation of China (Nos. 51733004, 51822308, 51725304, 51633006, 21661132006);the Strategic Priority Research Program (No. XDB12000000);the Youth Innovation Promotion Association of the Chinese Academy of Sciences, Startup Foundation for Doctors of China West Normal University (No. 15E007);Open Foundation of Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province (No. CSPC2015-1-1)

摘　　要：A novel semiconductor, dihexyl-substituted pentathienoacene(C6-PTA) is designed and synthesized in five steps with the total yield up to 25.2%. The introduction of hexyl chains endow the thin film semiconductor with about threefold increase in carrier mobility and one to three orders of magnitude improvement in current on/off ratio. Furthermore, single crystal FETs based on C6-PTA exhibited mobility up to 0.64 cm^2 V^(-1) s^(-1), which is over 50 times higher than the thin film counterpart. The results indicate clearly that C6-PTA is a promising organic semiconductor with high stability.A novel semiconductor, dihexyl-substituted pentathienoacene(C6-PTA) is designed and synthesized in five steps with the total yield up to 25.2%. The introduction of hexyl chains endow the thin film semiconductor with about threefold increase in carrier mobility and one to three orders of magnitude improvement in current on/off ratio. Furthermore, single crystal FETs based on C6-PTA exhibited mobility up to 0.64 cm^2 V^(-1) s^(-1), which is over 50 times higher than the thin film counterpart. The results indicate clearly that C6-PTA is a promising organic semiconductor with high stability.

关 键 词：ORGANIC FIELD-EFFECT TRANSISTORS ORGANIC SEMICONDUCTORS Thienoacene Charge transport Stability 

分 类 号：O6[理学—化学]