Since discovered in 2004, oil-water interfacial self-assembly of nanostructures has become a novel strategy for fabrication of nanofilms.[1] It is a powerful bottom-up approach for the film fabrication due to low cost and high efficiency, and is simply and universal for almost all low-dimensional nanostructures. The most prominent advantages of this assembly strategy are its simplicity and universality for almost all low-dimensional nanostructures. Furthermore, the quality of the as-assembled nanofilms should be high enough for the optoelectronic or electronic device applications. Herein, we present our present work on nanofilm and nanodevice fabrication from this novel and low-cost strategy. High quality rare-earth luminescent nanofilms and high quality semiconducting nanofilm-based photodetectors have successfully fabricated.[2,3]The photodetectors constructed from this facile method shows good sensitivity, excellent stability and fast response time, which are quite promising for applications such as optical communications, flame sensing, missile launch.Furthermore, we have fabricated a high-performance CoO nanofilm-based electrical resistive switching device from this self-assembly method [4]. A gigantic change in resistance induced by external electric field has been observed, and a very fast switching between the high resistance state (OFF) and low resistance state (ON) in ns level has also been realized for this device. This novel and facile strategy significantly decreases the cost of fabrication procedure, and can also be extended to fabricate other inorganic semiconductor thin-film photodectors and field effect transistors (FETs) [5] Figure 1. <img src='https://acs-archive-assets2.s3.amazonaws.com/241nm/uploads/69672_c3ind.jpg' alt='' /> .References: (1) Duan, H. W.; Wang, D. Y.; Kurthand, D. G.; M�hwald, H. Angew. Chem. Int. Ed. 2004 ,43, 5639.(2) Hu, L. F .; Ma, R.; Ozawa, T. C.; Sasaki, T. Angew. Chem., Int. Ed. 2009 , 48,3846.(3) (a) Hu, L. F .; Wu, L. M.; Liao, M. Y.; Fang. X. S. Adv. Mater. 2011 , 23, 1988.(b) Hu, L. F .;Chen, M.; Shan, W.Z.; Zhan, T, R.;Liao, M. Y.; Fang. X. S.; Hu, X. H.; Wu, L. M. Adv. Mater. 2011 , 23, 1988(4) Ma, R.; Osada, M.; Hu, L. F .; Sasaki, T.. Chem. Mater. 2010 , 22,6341.(5) Hu, L. F .; Chen, M.; Wu, L. M.; Fang, X. S.. Chem. Soc. Rev. 2012 , 23, 1350.

Interfacial self-assembly: A novel and facile strategy for nanofilm and nanodevice fabrication

248th National Meeting (2014)

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