A Homogeneously unidirectional dewetting on large-area microdroplet arrays was developed, which was induced via the gravity-induced deformation in droplets combined with alternating lyophilic/lyophobic patterns. This process allows the scaling-up deposition of thin films including organic semiconductors and transition metal oxides as 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 fully-printed OTFTs exceed 13 cm2 V−1 s−1 and 108, respectively.
- Xuying Liu
- Chuan Liu
- Takeo Minari
