Highly Efficient Nondoped Blue Organic Light-Emitting Diodes Based on Anthracene-Triphenylamine Derivatives

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• 作者：Silu Tao ; Yechun Zhou ; Chun-Sing Lee ; Shuit-Tong Lee ; Da Huang ; Xiaohong Zhang
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：September 18, 2008
• 年：2008
• 卷：112
• 期：37
• 页码：14603-14606
• 全文大小：167K
• 年卷期：v.112,no.37(September 18, 2008)
• ISSN：1932-7455

文摘

Blue light-emitting anthracene derivatives end-capped with triphenylamine for efficient hole transportation have been designed and synthesized using two-step Suzuki coupling reactions. The compounds possess high glass transition temperatures for good thermal stability and strong blue emission in solution. Typical three-layer organic light-emitting devices (OLEDs) made from these compounds show highly efficient blue emission, which are better than or comparable to state-of-the-art fluorescent OLEDs performance. For example, 9-pyrenyl-10-(4-triphenylamine) anthrancene (PAA)-based nondoped device exhibits efficient blue emission with a maximum efficiency up to 7.9 cd/A (or 6.8 lm/W). Based on the good hole transport of the anthracene-triphenylamine derivatives, deep blue emitting devices with high efficiency were achieved by using the derivatives as both emitter and hole transporter.