International Display Workshops General Incorporated Association

3:40 PM - 4:00 PM

[OLED2-2] Highly Efficient Deep Blue Fluorescence Emitter Based on Highly Conjugated Boron Structure

*Hanjong Yoo1, Daehyun Ahn1, Hyuna Lee1, Juyoung Lee1, Janghyuk Kwon1 (1. Kyung Hee University (Korea))

Boron TADF, blue TADF, Narrow FWHM

https://doi.org/10.36463/idw.2019.0822

We synthesized and evaluated new deep blue fluorescence emitter, KH-FBD1. This emitter exhibits pure deep blue PL spectrum peak at 452 nm with 20 nm full width half maximum. Fabricated device shows high efficiency of 7.4% with deep blue color coordinate of (0.14, 0.07). In addition, this device indicates long operational lifetime (LT95) of 100 hours at initial luminance 1,000 cd/m2. It also shows high efficiency of 12.7% in high T1 device with maintaining the deep blue color characteristic.