@article {25871,
	title = {High-mobility flexible oxyselenide thin-film transistors prepared by a solution-assisted method},
	journal = {J. Am. Chem. Soc.},
	volume = {142},
	year = {2020},
	pages = {2726{\textendash}2731},
	abstract = {Two-dimensional (2D) semiconductors hold great promise in\&nbsp;flexible\&nbsp;electronics because of their intrinsic\&nbsp;flexibility\&nbsp;and\&nbsp;high\&nbsp;electrical performance. However, the lack of facile synthetic and subsequent device fabrication approaches of\&nbsp;high-mobility\&nbsp;2D semiconducting\&nbsp;thin\&nbsp;films\&nbsp;still hinders their practical applications. Here, we developed a facile, rapid, and scalable\&nbsp;solution-assisted\&nbsp;method\&nbsp;for the synthesis of a\&nbsp;high-mobility\&nbsp;semiconducting\&nbsp;oxyselenide\&nbsp;(Bi2O2Se)\&nbsp;thin\&nbsp;film\&nbsp;by the selenization and decomposition of a precursor\&nbsp;solution\&nbsp;of Bi(NO3)3{\textperiodcentered}5H2O. Simply by changing the rotation speed in spin-coating of the precursor\&nbsp;solution, the thicknesses of Bi2O2Se\&nbsp;thin\&nbsp;films\&nbsp;can be precisely controlled down to few atomic layers. The as-synthesized Bi2O2Se\&nbsp;thin\&nbsp;film\&nbsp;exhibited a\&nbsp;high\&nbsp;Hall\&nbsp;mobility\&nbsp;of \~{}74 cm2\&nbsp;V{\textendash}1\&nbsp;s{\textendash}1\&nbsp;at room temperature, which is much superior to other 2D\&nbsp;thin-film\&nbsp;semiconductors such as transition metal dichalcogenides. Remarkably,\&nbsp;flexible\&nbsp;top-gated Bi2O2Se\&nbsp;transistors\&nbsp;showed excellent electrical stability under repeated electrical measurements on flat and bent substrates. Furthermore, Bi2O2Se\&nbsp;transistor\&nbsp;devices on muscovite substrates can be readily transferred onto\&nbsp;flexible\&nbsp;polyvinyl chloride (PVC) substrates with the help of thermal release tape. The integration of a\&nbsp;high-mobility\&nbsp;thin-film\&nbsp;semiconductor, excellent stability, and easy transfer onto\&nbsp;flexible\&nbsp;substrates make Bi2O2Se a competitive candidate for future\&nbsp;flexible\&nbsp;electronics.},
	url = {https://pubs.acs.org/doi/10.1021/jacs.9b11668},
	author = {Congcong Zhang and Jinxiong Wu and Yuanwei Sun and Tan, Congwei and Tianran Li and Teng Tu and Yichi Zhang and Yan Liang and Xuehan Zhou and Peng Gao and Hailin Peng}
}
