题目：

Breaking Fundamental Limitation of Flow-Induced Anisotropic Growth for Large-Scale and Fast Printing of Organic Single-Crystal Films

作者：

Fangming Sheng¹, Wei Deng¹*, Xiaobin Ren¹, Xinyue Liu¹, Xinghan Meng¹, Jialin Shi¹, Souren Grigorian², Jiansheng Jie^1,3*, and Xiujuan Zhang¹*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM),Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China

²Department of Physics, University of Siegen, 57072 Siegen, Germany

³Macao Institute of Materials Science and Engineering (MIMSE), MUST-SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, Taipa, Macau SAR 999078, China

摘要：

Advanced organic electronic technologies have put forward a pressing demand for cost-effective and high-throughput fabrication of organic single-crystal films (OSCFs). However, solution-printed OSCFs are typically plagued by the existence of abundant structural defects, which pose a formidable challenge to achieving large-scale and high-performance organic electronics. Here, it is elucidated that these structural defects are mainly originated from printing flow-induced anisotropic growth, an important factor that is overlooked for too long. In light of this, a surfactant-additive printing method is proposed to effectively overcome the anisotropic growth, enabling the deposition of uniform OSCFs over the wafer scale at a high speed of 1.2 mm s⁻¹at room temperature. The resulting OSCF exhibits appealing performance with a high average mobility up to 10.7 cm²V⁻¹s⁻¹, which is one of the highest values for flexible organic field-effect transistor arrays. Moreover, large-scale OSCF-based flexible logic circuits, which can be bent without degradation to a radius as small as 4.0 mm and over 1000 cycles are realized. The work provides profound insights into breaking the limitation of flow-induced anisotropic growth and opens new avenues for printing large-scale organic single-crystal electronics.

影响因子：

32.086

分区情况：

一区

链接：

https://doi.org/10.1002/adma.202401822