Eu<sup>2+</sup> ions as an antioxidant additive for Sn-based perovskite light-emitting diodes
Xi Wang, Lihua Liu, Zhao Qian, Congcong Gao, Hongyan Liang
Abstract
We introduced Eu 2+ ions as the electron donor to provide a reducing environment to suppress the oxidation of Sn 2+ . Finally, we obtained a pure red (PEA) 2 SnI 4 LED with a high EQE up to 1.48% and a maximum brightness of 221 cd m −2 .
Topics & Concepts
Materials scienceIonBrightnessLight-emitting diodePerovskite (structure)DiodeOptoelectronicsLuminous efficacyPhotochemistryNanotechnologyCrystallographyOpticsChemistryOrganic chemistryPhysicsLayer (electronics)Perovskite Materials and ApplicationsOrganic and Molecular Conductors ResearchOrganic Light-Emitting Diodes Research