title: Efficient Low-Temperature Solution-Processed Lead-Free Perovskite Infrared Light-Emitting Diodes.
abstract: Lead-free perovskite infrared light-emitting diodes are achieved by using a halide perovskite CsSnI3as an emissive layer. The film shows compact micrometer-sized grains with only a few pinholes and cracks at the grain boundaries. The device exhibits maximum radiance of 40 W sr-1m-2at a current density of 364.3 mA cm-2and maximum external quantum efficiency of 3.8% at 4.5 V.
authors.affiliation: Department of Physics, Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan, 32023, R.O.C.
authors.forename: Wei-Li
authors.initials: WL
authors.lastname: Hong
authors.affiliation: Department of Physics, Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan, 32023, R.O.C.
authors.forename: Yu-Chi
authors.initials: YC
authors.lastname: Huang
authors.affiliation: Department of Physics, Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan, 32023, R.O.C.
authors.forename: Che-Yu
authors.initials: CY
authors.lastname: Chang
authors.affiliation: Department of Physics, Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan, 32023, R.O.C.
authors.forename: Zhi-Chao
authors.initials: ZC
authors.lastname: Zhang
authors.affiliation: Department of Physics, Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan, 32023, R.O.C.
authors.forename: Huai-Ren
authors.initials: HR
authors.lastname: Tsai
authors.affiliation: Department of Physics, Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan, 32023, R.O.C.
authors.forename: Ning-Yi
authors.initials: NY
authors.lastname: Chang
authors.affiliation: Department of Physics, Center for Nanotechnology, Chung Yuan Christian University, Chung-Li, Taiwan, 32023, R.O.C. ycchao@cycu.edu.tw.
authors.forename: Yu-Chiang
authors.initials: YC
authors.lastname: Chao
keywords: electroluminescence; infrared; lead-free; light-emitting diodes; perovskites