Shear-Free Static Micro-Inclined Film Formation (SMICFF): Gravity and Marangoni-Driven Fabrication of High-Performance Organic Semiconductors

作者团队： Jian Deng^{ORCID: 0000-0001-8210-9154}, Kangzhe Liu, Xiyue Yuan, Ding Tang, Shaohua Tong, Liqun Liu, Zengqi Xie, Chunhui Duan* (通讯作者), Yuguang Ma* (通讯作者)^{ORCID: 0000-0003-0373-5873}

通讯作者邮箱：duanchunhui@scut.edu.cn (Chunhui Duan); ygma@scut.edu.cn (Yuguang Ma)

发表时间：First published: 02 June 2025

期刊卷期：Advanced Functional Materials, Volume 35, Issue 42, Article ID: 2506218 (2025)

DOI：10.1002/adfm.202506218

伦理声明：作者声明无利益冲突（Conflict of Interest: The authors declare no conflict of interest.）；研究数据可联系通讯作者获取（Data Availability: The data supporting the findings are available from the corresponding author upon reasonable request.）

The advancement of organic electronics necessitates innovative film formation technologies to address challenges in crystallinity control, uniformity, and reproducibility. This study introduces static micro-inclined film formation (SMICFF), a novel technique inspired by natural fluid dynamics, to fabricate high-performance organic semiconductor thin films. By leveraging gravity and Marangoni flow, SMICFF enables precise control over molecular alignment and film uniformity, eliminating the need for external shear forces.

Using two model materials poly(3,3′-difluoro-5,5″″-dimethyl-3″,4″″-bis(2-octyldodecyl)-2,2′:5′,2″:5″,2″′:5″′,2″″-quinquethiophene) (P5TCN-2F) and low-solubility poly(4-(3-(3-decylpentadecyl)-3″,4′-difluoro-5″-methyl-[2,2′:5′,2″-terthiophen]-5-yl)-7-(4-(3-decylpentadecyl)-5-methylthiophen-2-yl)benzo[c][1,2,5]thiadiazole-5,6-dicarbonitrile) (PDCBT-DP2F), SMICFF-produced films achieved carrier mobilities of 2.41 cm²/V s and 0.31 cm²/V s, respectively, representing over 5-fold enhancements compared to blade-coated, bar-coated, and drop-cast counterparts.

Statistical analysis revealed Gaussian-distributed device parameters with reduced batch-to-batch variability, underscoring SMICFF′s inherent optimization capability. The technique′s compatibility with high-surface-tension systems is demonstrated through solvent screening and temperature-controlled evaporation protocols. These findings establish SMICFF as a robust platform for the rapid evaluation of materials and the high-throughput fabrication of flexible electronics, overcoming the critical limitations of traditional solution-processing methods.

static micro-inclined film formation (SMICFF) Marangoni flow organic semiconductors molecular alignment flexible electronics

• National Key R&D Program of China (Grant Numbers: 2020YFA0714604, 2024YFB4611500)
• Basic and Applied Basic Research Foundation of Guangdong Province (Grant Number: 2022B1515120008)
• Guangdong Innovative and Entrepreneurial Research Team Program (Grant Number: 2019ZT08L075)
• Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology (Grant Number: 2023B1212060003)

文件名称：adfm202506218-sup-0001-SuppMat.pdf

文件大小：2 MB

获取方式：通过期刊原文链接下载（含实验方法细节、补充表征数据、溶剂筛选结果及批次稳定性统计图表）

内容说明：包含SMICFF装置示意图、材料合成路线、XRD/GIWAXS结晶性分析、不同制备方法的性能对比数据，为研究结论提供完整实验支撑

原文链接（Wiley Online Library）：点击访问文献原文（Advanced Functional Materials官网）

文献引用格式：Deng, J., Liu, K., Yuan, X., Tang, D., Tong, S., Liu, L., Xie, Z., Duan, C.*, Ma, Y.* (2025). Shear-Free Static Micro-Inclined Film Formation (SMICFF): Gravity and Marangoni-Driven Fabrication of High-Performance Organic Semiconductors. Adv. Funct. Mater., 35(42), 2506218. https://doi.org/10.1002/adfm.202506218