title: Efficient Visible Quasi-2D Perovskite Light-Emitting Diodes.
abstract: Efficient quasi-2D-structure perovskite light-emitting diodes (4.90 cd A(-1) ) are demonstrated by mixing a 3D-structured perovskite material (methyl ammonium lead bromide) and a 2D-structured perovskite material (phenylethyl ammonium lead bromide), which can be ascribed to better film uniformity, enhanced exciton confinement, and reduced trap density.
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 37673, Republic of Korea.
authors.forename: Jinwoo
authors.initials: J
authors.lastname: Byun
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 37673, Republic of Korea.
authors.forename: Himchan
authors.initials: H
authors.lastname: Cho
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 37673, Republic of Korea.
authors.forename: Christoph
authors.initials: C
authors.lastname: Wolf
authors.affiliation: Department of Applied Organic Materials Engineering, Inha University, Incheon, 22212, Republic of Korea.
authors.forename: Mi
authors.initials: M
authors.lastname: Jang
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Aditya
authors.initials: A
authors.lastname: Sadhanala
authors.affiliation: Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Richard H
authors.initials: RH
authors.lastname: Friend
authors.affiliation: Department of Applied Organic Materials Engineering, Inha University, Incheon, 22212, Republic of Korea.
authors.forename: Hoichang
authors.initials: H
authors.lastname: Yang
authors.affiliation: Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk, 37673, Republic of Korea. twlee@postech.ac.kr, sefaattin.tongay@asu.edu.
authors.forename: Tae-Woo
authors.initials: TW
authors.lastname: Lee
keywords: layered perovskites; mixed organic ammonium; organic/inorganic hybrid perovskites; organometal halide perovskites; phenylethyl ammonium (PEA) lead bromide