화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO))
권호 45권 1호
발표분야 유무기 양자소재 및 응용기술
제목 Nanopatterning of Perovskites Templated in Self-assembled Block Copolymer Films Enhancing Photoluminescence and Environmental Stability
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. 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 solution of perovskite and poly(styrene)-block-poly(2-vinylpyridine) was spin-coated on the substrate, a nanostructured BCP was developed by microphase separation. Spontaneous crystallization of the precursor ions coordinated with the P2VP domains yielded ordered nanocrystals with various structures with controlled domain size. The nanopatterned OIHPs showed significantly enhanced photoluminescence with resistance to humidity and heat due to geometrically confining OIHPs and passivation with the P2VP chains.
저자 오진우, 한효원, 박철민
소속 연세대
키워드 block copolymers; self-assembly; confined crystallization; perovskite
E-Mail cmpark@yonsei.ac.kr