| 초록 |
Ordered nanostructured crystals of thin organic-inorganic metal halide perovskites (OIHPs) are of great interest because of the dimensional-dependence of their photoelectronic properties for developing OIHPs with novel properties. Top-down routes such as nanoimprinting have been extensively used for nanopatterning OIHPs, while bottom-up approaches are seldom used. Herein, we developed a simple route, involving the controlled crystallization of the OIHPs templated with a self-assembled block copolymer (BCP), for fabricating nanopatterned OIHP films with various shapes and nanodomain sizes. When the precursor ion solution consisting of perovskite and PS-b-P2VP was spin-coated on the substrate, a nanostructured BCP was developed by microphase separation. The nanopatterned OIHPs showed significantly enhanced photoluminescence with resistance to humidity and heat due to geometrically confining OIHPs in and passivation with the P2VP chains. |
