کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403223 | 1392754 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Efficient bright white organic light-emitting diode based on non-doped ultrathin 5,6,11,12-tetraphenylnaphthacene layer
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
High-performance undoped white organic light-emitting diode (OLED) has been fabricated using an ultrathin yellow-emitting layer of 5,6,11,12-tetraphenylnaphthacene (rubrene) inserted at two sides of interface between two N,Nâ²-bis-(1-naphthyl)-N,Nâ²- biphenyl-1,1â²-biphenyl-4,4â²- diamine (NPB) layers as a hole transporting and blue emissive layer, respectively. The results showed that a maximum luminance of the device reached to as high as 21,500Â cd/m2 at 15Â V. The power efficiencies of 2.5 and 1.6Â lm/W at a luminance of 1000 and 10000Â cd/m2, respectively, were obtained. The peaks of electroluminescent (EL) spectra locate at 429 and 560Â nm corresponding to the Commissions Internationale De L'Eclairage (CIE) coordinates of (0.32, 0.33), which is independent of bias voltage. The performance enhancement of the device may result from direct charge carrier trapping in rubrene. Energy transfer mechanism was also found in the EL process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 128, Issue 11, November 2008, Pages 1783-1786
Journal: Journal of Luminescence - Volume 128, Issue 11, November 2008, Pages 1783-1786
نویسندگان
Lu Li, Junsheng Yu, Xiaoqing Tang, Tao Wang, Wei Li, Yadong Jiang,