Host Engineering of Deep-Blue-Fluorescent Organic Light-Emitting Diodes with High Operational Stability and Narrowband Emission.

ABSTRACT: The realization of highly operationally stable blue organic light-emitting diodes (OLEDs) is a challenge in both academia and industry. This paper describes the development of anthracene-dibenzofuran host materials, 2-(10-(naphthalen-1-yl)anthracen-9-yl)naphtho[2,3-b]benzofuran (Host 1) and 2-(10-([1,1'-biphenyl]-2-yl)anthracen-9-yl)naphtho[2,3-b]benzofuran (Host 2), namely for use in the emissive layer of an OLED stack. A multiple-resonance thermally activated delayed serves as the blue fluorescence emitter and exhibits an initial luminance of 1000 cd m^-2 and long operational stability (i.e., time to decay to 90% of initial luminance) of 249 h. Furthermore, a deep-blue OLED with an optimized top-emitting architecture with a high current efficiency of 154.3 cd A^-1, is

SUBMITTER: Cai W 

PROVIDER: S-EPMC11578301 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature