Rapid crystallization-driven high-efficiency phase-pure deep-blue Ruddlesden–Popper perovskite light-emitting diodes

作     者：Gyumin Jang Hyowon Han Sunihl Ma Junwoo Lee Chan Uk Lee Wooyong Jeong Jaehyun Son Dongki Cho Ji-Hee Kim Cheolmin Park Jooho Moon Gyumin Jang;Hyowon Han;Sunihl Ma;Junwoo Lee;Chan Uk Lee;Wooyong Jeong;Jaehyun Son;Dongki Cho;Ji-Hee Kim;Cheolmin Park;Jooho Moon

作者机构：Yonsei UniversityDepartment of Materials Science and EngineeringSeoulRepublic of Korea Sungkyunkwan UniversityDepartment of Energy ScienceSuwonRepublic of Korea Institute for Basic ScienceCenter for Integrated Nanostructure PhysicsSuwonRepublic of Korea 

出 版 物：《Advanced Photonics》 (先进光子学（英文）)

年 卷 期：2023年第5卷第1期

页      面：8-18页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：National R&D Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Science and ICT(Grant Nos.2018M3D1A1058793 and 2021R1A3B1068920) the Yonsei Signature Research Cluster Program of 2021(Grant No.2021-22-0002) 

主　　题：Ruddlesden–Popper perovskite rapid crystallization deep-blue light-emitting diodes phase purity randomly oriented crystals 

摘      要：Perovskite light-emitting diodes(PeLEDs)are considered as promising candidates for nextgeneration solution-processed full-color ***,the external quantum efficiencies(EQEs)and operational stabilities of deep-blue(3 is hampered completely,so that phase-pure 2D-RPP films with bandgaps suitable for deep-blue PeLEDs can be obtained *** uniquely developed rapid crystallization method also enables formation of randomly oriented 2D-RPP crystals,thereby improving the transfer and transport kinetics of the charge ***,high-performance deep-blue PeLEDs emitting at 437 nm with a peak EQE of 0.63%are successfully *** color coordinates are confirmed to be(0.165,0.044),which match well with the Rec.2020 standard blue gamut and have excellent spectral stability.