Extremely deep-blue fluorescent emitters with CIEy ≤ 0.04 for non-doped organic light-emitting diodes based on an indenophenanthrene core. (September 2017)

• Record Type: Journal Article
• Authors: Jeong, Seongjin; Hong, Jong-In
• Is Part Of: Dyes and pigments. Volume 144(2017)
• Page Start: 9
• Page End: 16
• Publication Date: 2017-09
• Subjects: Deep-blue emitter -- Non-doped system -- Fluorescent organic light-emitting diodes -- Indenophenanthrene -- Charge balance; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2017.05.014
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: The fluorescent molecules 7, 7-dimethyl- N, N -diphenyl-7H-indeno[1, 2- a ] phenanthren-9-amine (DIP) and 4-(7, 7-dimethyl-7H-indeno[1, 2- a ]phenanthren-9-yl)- N, N -diphenylaniline (TIP), with indenophenanthrene cores and attached arylamine structures, were synthesized for use as extremely deep blue fluorescent emitting materials. A non-doped device using DIP as an emitting material exhibited a maximum external quantum efficiency of 3.27% and had Commission Internationale de l'Eclairage (CIE) color coordinates of (0.158, 0.040). Graphical abstract: Highlights: Fluorescent molecules with an indenophenanthrene core were synthesized for use as deep blue emitters. The indenophenanthrene moiety can be used as a core structure of deep blue OLED materials. A non-doped device exhibited a maximum EQE of 3.27% with CIE color coordinates of (0.158, 0.040). The relative device efficiency was rationalized by the charge balance.