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- W2904679906 abstract "Abstract The development of blue materials with good efficiency, even at high brightness, with excellent color purity, simple processing, and high thermal stability assuring adequate device lifetime is an important remaining challenge for organic light‐emitting didoes (OLEDs) in displays and lightning applications. Furthermore, these various features are typically mutually exclusive in practice. Herein, four novel green and blue light‐emitting materials based on a monothiatruxene core are reported together with their photophysical and thermal properties, and performance in solution‐processed OLEDs. The materials show excellent thermal properties with high glass transition temperatures ranging from 171 to 336 °C and decomposition temperatures from 352 to 442 °C. High external quantum efficiencies of 3.7% for a deep‐blue emitter with CIE color co‐ordinates (0.16, 0.09) and 7% for green emitter with color co‐ordinates (0.22, 0.40) are achieved at 100 cd m −2 . The efficiencies observed are exceptionally high for fluorescent materials with photoluminescence quantum yields of 24% and 62%, respectively. The performance at higher brightness is very good with only 38% and 17% efficiency roll‐offs at 1000 cd m −2 . The results indicate that utilization of this unique molecular design is promising for efficient deep‐blue highly stable and soluble light‐emitting materials." @default.
- W2904679906 created "2018-12-22" @default.
- W2904679906 creator A5017376999 @default.
- W2904679906 creator A5017401077 @default.
- W2904679906 creator A5019299318 @default.
- W2904679906 creator A5033615539 @default.
- W2904679906 creator A5056764420 @default.
- W2904679906 creator A5072773499 @default.
- W2904679906 date "2018-12-17" @default.
- W2904679906 modified "2023-10-16" @default.
- W2904679906 title "Monothiatruxene‐Based, Solution‐Processed Green, Sky‐Blue, and Deep‐Blue Organic Light‐Emitting Diodes with Efficiencies Beyond 5% Limit" @default.
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- W2904679906 doi "https://doi.org/10.1002/adfm.201807572" @default.