量子点Bright Visible Infrared Light Emitting Diodes Based on Hybrid Halide Perovskite with Spiro-OMeTAD as a Hole Injecting Layer.pdfVIP

Letter pubs.acs.org/JPCL Bright Visible-Infrared Light Emitting Diodes Based on Hybrid Halide Perovskite with Spiro-OMeTAD as a Hole-Injecting Layer Oscar A. Jaramillo-Quintero,†,‡ Rafael S. Sanchez,† Marina Rincon,‡ and Ivan Mora-Sero*,† †Photovoltaic and Optoelectronic Devices Group, Departament de Física, Universitat Jaume I, 12071 Castello, Spaiń ‡Instituto de Energías Renovables, Universidad Nacional Autonoma de Mexico, Apartado Postal 34, Temixco, Morelos 62580, Mexicó ́ ́ S *Supporting Information ABSTRACT: Hybrid halide perovskites that are currently intensively studied for photovoltaic applications, also present outstanding properties for light emission. Here, we report on the preparation of bright solid state light emitting diodes (LEDs) based on a solution-processed hybrid lead halide perovskite (Pe). In particular, we have utilized the perovskite generally described with the formula CH NH PbI Cl and exploited a 3 3 3‑x x configuration without electron or hole blocking layer in addition to the injecting layers. Compact TiO2 and Spiro-OMeTAD were used as electron and hole injecting layers, respectively. We have demonstrated a bright combined visible-infrared radiance of 7.1 W· −1 −2 −2 sr ·m at a current density of 232 mA·cm , and a maximum external quantum efficiency (EQE) of 0.48%. The devices prepared surpass the EQE values achieved in