[17a-B6-1~9] 12.4 Organic light-emitting devices and organic transistors

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17a-B6-3] Head and Tail Group-Oriented Ligand Design for Surface Passivation of Perovskite Quantum Dots and Their Device Applications

〇Taisei Kimura¹, Kenshin Yoshida¹, Kohei Narazaki², Satoshi Asakura³, Takayuki Chiba^2,4, Akito Masuhara^1,4 (1.Grad. Sch. of Sci. and Eng., Yamagata Univ., 2.Grad. Sch. of Org. Mat. Sci., Yamagata Univ., 3.Ise Chem. Corp., 4.FROM, Yamagata Univ.)

Keywords:

Perovskite,Quantum dots,Ligand

While perovskite quantum dots (PeQDs) have excellent optical properties, their LEDs are still hampered in practical applications by the low external quantum efficiency (EQE). In this study, we focused on the surface ligands of PeQDs and aimed to overcome this issue by synthesizing a ligand focusing on the structure of the 'head group' which binds to PeQDs, and the 'tail group' of the alkyl groups. With this ligand, we succeeded in improving the maximum EQE of PeQDs LEDs by more than two-fold.