[17a-B6-1~9] 12.4 Organic light-emitting devices and organic transistors

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17a-B6-6] Development of high-brightness red CsPbI₃ nanocrystal LEDs using wavelength conversion technology

〇(M2)Daisuke Yokota¹, Haruka Abe², Shingo Saito¹, Kento Yanagihashi², Takayuki Chiba², Takao Oto¹ (1.Yamagata Univ., 2.Yamagata Univ. ROEL)

Keywords:

perovskite nanocrystal,nitride semiconductor,LED

Wavelength conversion optical devices combining blue InGaN LEDs and green/red nanocrystals (NCs) are expected to produce high-brightness light emission because current is injected only into chemically stable nitride semiconductors, thus suppressing the degradation of NCs. In this study, a red conversion LED combining polymer binder-dispersed CsPbI₃ NCs on a blue InGaN LED was actually fabricated and achieved an external quantum efficiency of 26.2%, light output power of 3.47 mW/cm², and half device lifetime of 103 hours.