[17p-Z24-1~14] 12.3 Functional Materials and Novel Devices

△ [17p-Z24-14] Fabrication and stabilization of thin film of perovskite nanocrystals
by novel cross-linkable ligands

〇(B)Taisei Kimura¹, Naoaki Oshita¹, Ryohei Yamakado², Satoshi Asakura^2,3, Takayuki Chiba^4,5, Akito Masuhara^3,4 (1.Fac. of Eng., Yamagata Univ., 2.Grad. Sch. of Org. Mat. Sci., Yamagata Univ., 3.FROM, Yamagata Univ., 4.Grad. Sch. of Sci. and Eng., Yamagata Univ., 5.Ise Chem. Corp.)

Keywords:Perovskite quantum dots, Ligand assisted reprecipitaion, Ligand engineering

Perovskite quantum dots (PeQDs) have attracted due to their excellent optical properties and investigated for various applications such as light-emitting diodes, solar cells, and color conversion filters. Although, they are suffering from their instability, which is attributed to the detachment of their surface ligands. In this work, a novel cross-linkable ligand was synthesized for the prevention of their detachment from the surface of PeQDs, and the formation of a pseudo shell layer. After that, we prepared PeQDs with highly luminesces by ligand assisted reprecipitation. After preparation of films using the obtained PeQDs, to form a pseudo shell layer, the film was irradiated UV light in a glove box for cross-linking of the surface ligand. As a result, PeQDs with synthesized ligand were successfully improved their stability against water and polar solvents.