Synthesis and Electroluminescence Properties of New Type Multi-Chromophore Emitting Materials for Organic Light-Emitting Diodes

• Published in: Journal of nanoscience and nanotechnology Vol. 18; no. 3; p. 2162
• Main Authors: Kang, Seokwoo, Lee, Hayoon, Jung, Hyocheol, Shin, Donghee, Park, Miyeon, Kay, Kwang-Yol, Park, Jongwook
• Format: Journal Article
• Language: English
• Published: United States 01.03.2018
• ISSN: 1533-4880
• DOI: 10.1166/jnn.2018.14947

New three emitting compounds, AK-1, AK-2 and AK-3 including diazocine moiety were synthesized through Suzuki-coupling reaction. Physical properties such as optical, electroluminescent properties were investigated. UV-visible spectrum of AK-1, AK-2 and AK-3 in film state showed maximum 392, 393 and 401 nm. PL spectrum of AK-1, AK-2 and AK-3 showed maximum emission wavelength of 472, 473 and 435 nm. Three compounds were used as EML in OLED device: ITO/2-TNATA (60 nm)/NPB (15 nm)/EML (35 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nm). AK-3 OLED device showed C.I.E value of (0.18, 0.26) and luminance efficiency of 0.51 cd/A at 10 mA/cm2. New derivatives including diazocine moiety were introduced as OLED emitting material and the EL efficiency was increased by the proper combination of core and side group.