Synthesis and electrical properties of new blue emitter having boron atom and anthracene moiety

Abstract

Boron-based blue light-emitting materials, 3,11-bis(10-phenylanthracen-9-yl)-5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracene [PA-DOBNA] was prepared with the composition of DOBNA core moiety and 9-phenylanthracene (PA) moiety as side group. The synthesized material showed excellent thermal stability with a high T_d of > 400 °C. The doped device using dopant exhibited current efficiency (CE) of 2.90 cd/A and EQE of 4.40% at a current density of 10 mA/cm². Commission Internationale de L’Eclairage (CIE) coordinates for non-doped and doped devices are (0.16, 0.18) and (0.15, 0.06) corresponding to the EL peaks at 457 and 446 nm, respectively. In addition, the doped device data showed a deep-blue emission of CIE (x = 1.15, y = 0.06) suitable for UHD-TV.

Keywords:

• Blue emitter
• boron moiety
• fluorescence
• OLED

Additional information

Funding

This research was supported by National R&D Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science & ICT (No. 2020M3A7B4002030). This research was supported by the Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education (2020R1A6A1A03048004). This work was supported by ITECH R&D program of MOTIE/KEIT. [project No. 20009872, Development of high throughput colorimetric chemical materials]. This research was supported by Basic Science Research Capacity Enhancement Project through Korea Basic Science Institute (National research Facilities and Equipment Center) grant funded by the Ministry of Education (No. 2019R1A6C1010052).