Presentation Information
[20p-A307-5]Enhanced thermal stability of Perovskite quantum dot with Inorganic ligand
〇(M1C)Ryo Oba1, Ryota Sato1, Naoaki Oshita1, Satoshi Asakura2, Motofumi Kashiwagi3, Akito Masuhara1,4 (1.Grad. Sch. of Sci. and Eng., Yamagata Univ., 2.Ise Chem. Corp., 3.ZEON Corp., 4.ROEL, Yamagata Univ.)
Keywords:
perovskite,quantum dot,thermal stability
ABX3 typed perovskite quantum dots (PeQD) have attracted attention as a light source for light conversion film that can be mounted on the next generated display due to their excellent properties. However, because of the low thermal stability of PeQD, they have not been put to practical use. In detail, the optical properties of PeQD were degraded under high temperature conditions during the film manufacturing process. This degradation is caused by the desorption of organic ligands which bind on the PeQD surface. Organic ligands are unstable because their bonding is due to acid-base equilibrium, and they are easily desorbed in high temperature conditions.
In this presentation, PeQD with high thermal stability were successfully prepared by adding ZnBr2 as the new ligands that can bind stably on the PeQD surface to solve these issues. As a result, PeQD with ZnBr2 maintained 88% of initial photoluminescence quantum yields after 1 hour at 100oC.
In this presentation, PeQD with high thermal stability were successfully prepared by adding ZnBr2 as the new ligands that can bind stably on the PeQD surface to solve these issues. As a result, PeQD with ZnBr2 maintained 88% of initial photoluminescence quantum yields after 1 hour at 100oC.