[9a-PB5-1~11] 12.8 Specific theme: Photoelectric Properties, Structural Controls and Device of Perovskites Materials

[9a-PB5-3] Thermally Stable Perovskite Nanocrystals Enabled by Thiocarboxylic Acid Ligands for LED Applications

〇Rinku Watanabe¹, Taisei Kimura¹, Takuro Iizuka¹, Dong Ryeol Whang², Akito Masuhara^1,3 (1.Grad. Sch. Of Sci. and Eng., Yamagata Univ, 2.Hoseo University, 3.FROM, Yamagata Univ)

Keywords:

perovskite nanocrystals,Light Emitting Diode,Thermal Stability

In this study, we report perovskite nanocrystals incorporating thiocarboxylic acid ligands with an adamantane structure to improve thermal stability and LED performance. The modified nanocrystals maintained more than 70% of their photoluminescence quantum yield after 1200 min at 100C, and LEDs fabricated using this material exhibited an approximately threefold increase in external quantum efficiency compared to the conventional system.