Journal
ADVANCED ELECTRONIC MATERIALS
Volume 8, Issue 3, Pages -Publisher
WILEY
DOI: 10.1002/aelm.202101114
Keywords
C; -C bond; multiresonance effect; narrow bandwidth; organic light-emitting diodes; Pure red color
Funding
- Technology Innovation Program [20006464]
- Ministry of Trade, Industry & Energy (MOTIE, Korea)
Ask authors/readers for more resources
Developing boron-based emitters with a narrow band spectrum in the red region is crucial for optoelectronic applications. The newly designed emitters exhibit pure red emissions with high quantum yield and external quantum efficiency, showing promise for large-scale production.
Developing boron-based emitters in red region with a narrow band spectrum is crucial and challenging for optoelectronic applications. Herein the authors report novel emitters with reasonable multiple resonance (MR) effect by utilizing a C-C bond type connection instead of conventional C-N bond. The designed emitters BP-2DPA and DBP-4DPA exhibit narrowband pure red emissions with photoluminescence (PL) maxima of 599, 605 nm with a full width half maximum (FWHM) of 34 nm and high PL quantum yield of 91.3, 96.4%, respectively. Moreover, compared to reported MR emitters, the synthesis of BP-2DPA and DBP-4DPA has resulted in a high yield near to 40% with ease to scale in grams. The designed rigid moieties show reasonable MR effect with atomically highest occupied molecular orbital and lowest unoccupied molecular orbital separations. The fabricated organic light-emitting diodes based on BP-2DPA and DBP-4DPA possessed an external quantum efficiency of 11.3% and 15.1%, pure red emission with electroluminescence maxima at 605 and 617 nm, a narrow FWHM of 42 and 44 nm respectively. The corresponding CIE coordinates are well approaching near to red color NTSC requirements. This is the first work reported with this strategy for achieving narrow emission spectrum for pure red color emitters.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available