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Efficient dual-mode emissions of high-concentration erbium ions doped lead-free halide double perovskite single crystals

Materials ScienceHigh-concentration Erbium IonsEngineeringPerovskite Solar CellOptical PropertiesApplied PhysicsCondensed Matter PhysicsHalide PerovskitesChemistryEfficient Dual-mode EmissionsLead-free PerovskitesOptoelectronics