Presentation Information
[23p-1BC-13]Ambient conditions synthesis of pure-red emissive perovskite nanocrystals with narrow full width half maximum by A-site exchange utilizing multidentate ligands
〇(M1)Kenshin Yoshida1, Taisei Kimura1, Satoshi Asakura2, Akito Masuhara1,3 (1.Grad. Sch. of Sci. and Eng., Yamagata Univ., 2.Ise Chem. Corp., 3.FROM, Yamagata Univ.)
Keywords:
Perovskite,Nanocrystals,Red emissive
Perovskite nanocrystals (PeNCs) are semiconductor nanomaterials that exhibit excellent optical properties. In particular, the narrow full width at half maximum (FWHM) of the emission spectrum enables them to achieve high color purity. Therefore, they are expected to be applied as light-emitting layers in ultra-high-definition television (UHDTV). The conventional synthesis method of red-emissive PeNCs, which is a polar solvent-free room-temperature synthesis method, enables the synthesis of PeNCs with a narrow FWHM. However, it is difficult to control the particle size and emission wavelength by adjusting the amount of ligands by the synthesis method. In this study, we attempted to solve this problem by controlling the emission wavelength by A-site exchange after the preparation of PeNCs. Furthermore, by coordinating multidentate ligands to the PeNCs before A-site exchange, excessive distortion of the crystal surface was suppressed, and stable wavelength control was successfully achieved.