Effective defect passivation of CsPbBr<sub>3</sub> quantum dots using gallium cations toward the fabrication of bright perovskite LEDs
Jiantai Wang, Yushuai Xu, Shenghan Zou, Chao Pang, Ruimin Cao, Zhangxu Pan, Chan Guo, Shiben Hu, Jiucheng Liu, Zhiyuan Xie, Zheng Gong
Abstract
Trivalent gallium cations are introduced to passivate the surface defects of the CsPbBr 3 QDs. The resultant Ga-modified perovskite QDs are used to fabricate perovskite LEDs, which exhibit remarkably improved brightness and stability, compare with pristine QD-derived devices.
Topics & Concepts
PassivationPerovskite (structure)Materials scienceLight-emitting diodeGalliumQuantum dotOptoelectronicsFabricationBrightnessDiodeNanotechnologyChemical engineeringLayer (electronics)OpticsMetallurgyEngineeringPhysicsAlternative medicinePathologyMedicinePerovskite Materials and ApplicationsOptical properties and cooling technologies in crystalline materialsQuantum Dots Synthesis And Properties