[12a-S201-1~9] Next generation luminescent materials for optical devices

△ [12a-S201-6] Preparing organic-inorganic perovskite quantum dots by ultrasound-assisted bead milling for application to light-emitting devices

〇(M2)Junya Enomoto¹, Shuma Motomura², Kizuku Kushimoto³, Junya Kano³, Satoshi Asakura^1,4, Takayuki Chiba^5,6, Akito Masuhara^1,6 (1.Grad. Sch. of Sci. and Eng., Yamagata Univ., 2.Fac. of Eng., Yamagata Univ., 3.IMRAM, Tohoku Univ., 4.Ise Chem. Corp., 5.Grad. Sch. of Org. Mat. Sci., Yamagata Univ., 6.FROM, Yamagata Univ.)

Keywords:perovskite quantum dots, top-down method, Purification process

Organic-inorganic perovskite quantum dots (PeQDs) with excellent optical properties (ex. high photoluminescent quantum yield and color purity) are expected to be used as a light source of next generation displays. In this work, we attempted to prepare PeQDs by the “ultrasound-assisted bead milling” which is novel synthesis method with collision of beads, and ultrasonic cavitation. In addition, the PeQDs were purified by redispersing them into the other solvents with a low dielectric constant and obtaining PeQDs as a solid state by centrifugation. As a result, we succeeded in improving the performance of PeQDs.