Unidirectional dewetting enables the production of large-area thin films with high efficiency at low cost. Herein, we report homogeneous unidirectional dewetting on large-area microdroplet arrays via gravity-induced deformation in droplets combined with alternating lyophilic/lyophobic patterns. This process allows the scaled-up deposition of thin films, including organic semiconductors and transition metal oxides, through the autogenous shrinkage of droplets, which further enables the fabrication of large-area organic thin-film transistor (OTFT) arrays. The resulting field-effect mobility and on/off ratio of the fully printed OTFTs exceeded 13 cm² V⁻¹ s⁻¹ and 10⁸, respectively. Therefore, the presented dewetting method is promising to realize the roll-to-roll manufacture of large-area flexible electronics.

单向去湿使得能够以低成本高效率地生产大面积薄膜。在本文中，我们报告了重力引起的液滴变形与亲液/疏液模式的组合，从而在大面积微滴阵列上进行了均匀的单向去湿。该工艺通过液滴的自发收缩使包括有机半导体和过渡金属氧化物在内的薄膜按比例放大沉积，从而进一步实现了大面积有机薄膜晶体管（OTFT）阵列的制造。完全印刷的OTFT的最终场效应迁移率和开/关比超过13 cm ² V ^-1 s ^-1和10 ⁸， 分别。因此，提出的去湿方法有望实现大面积柔性电子设备的卷对卷制造。