| Title | Facilely Accessible Porous Conjugated Polymers toward High-Performance and Flexible Organic Electrochemical Transistors |
| Authors | Lan, Liuyuan Chen, Junxin Wang, Yazhou Li, Peiyun Yu, Yaping Zhu, Genming Li, Zhengke Lei, Ting Yue, Wan McCulloch, Iain |
| Affiliation | Sun Yat Sen Univ, Sch Mat & Engn, State Key Lab Optoelect Mat & Technol,Guangzhou K, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangzhou 510275, Peoples R China Peking Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Polymer Chem & Phys, Beijing 100871, Peoples R China Univ Oxford, Dept Chem, Oxford OX1 3TA, England |
| Keywords | OPPORTUNITIES ION |
| Issue Date | 22-Feb-2022 |
| Publisher | CHEMISTRY OF MATERIALS |
| Abstract | Porous morphologies have shown great potential in optimizing the capacitance and charge carrier transport for semiconducting polymers in organic electrochemical transistors (OECTs). Nevertheless, it remains arduous and time-consuming to obtain such desired microstructures due to the requirement of rigorous humidity control and templates/additives. Herein, three new glycolated conjugated polymers based on a fused-ring cyclopentadithiophene (CPDT) skeleton are developed, which feature readily obtained large-area porous thin films via spin-casting from binary solvent mixtures under ambient conditions. These polymers afford fascinating capacitances reaching a maximum of 353 F cm(-3), which is the highest value reported to date for p-type OECT materials. The optimal combination of volumetric capacitance and hole mobility in a representative polymer enables the fabrication of OECTs with a high mu C* value up to 476 F cm(-1) V-1 s(-1) and a current retention of 98% upon 600 switching cycles. Moreover, the corresponding flexible OECTs exhibit exceptional mechanical stability at various bending radii down to 5 mm and under repetitive bending cycles. This work provides a simple yet effective binary solvent strategy to fabricate porous conjugated polymers for high-performance OECTs and flexible devices, which will further advance the development of organic mixed ionic-electronic conductors in OECT research fields and beyond. |
| URI | http://hdl.handle.net/20.500.11897/648065 |
| ISSN | 0897-4756 |
| DOI | 10.1021/acs.chemmater.1c03797 |
| Indexed | SCI(E) |
| Appears in Collections: | 数学科学学院 高分子化学与物理教育部重点实验室 |
