کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
538876 | 871201 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved electrophosphorescence efficiency for organic light-emitting diodes using the cohost with stepwise blending profile
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
سخت افزارها و معماری
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Improved electrophosphorescence efficiency for organic light-emitting diodes using the cohost with stepwise blending profile Improved electrophosphorescence efficiency for organic light-emitting diodes using the cohost with stepwise blending profile](/preview/png/538876.png)
چکیده انگلیسی
A tris(2-phenylpyridine) iridium doped phosphorescent organic light-emitting diode using a mixed host with stepwise blending profile was demonstrated. We adopted the mixture of 4,4′,4″-tris(N-carbazolyl) triphenylamine and 1,3,5-tris(N-phenylbenzimidazole-2-yl)benzene as the host in the emitting layer. By using a stepwise blending ratio profile of the two host materials, a peak external quantum efficiency of 17.7% and a peak power efficiency of 45.7 lm/W were attained, which increased by 59.5% and 60.9% relative to the optimal uniform blending ratio profile based device, respectively. The efficiency improvement was attributed to the multiple exciton formation interfaces, which could expand the recombination regions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Displays - Volume 31, Issue 3, July 2010, Pages 128–131
Journal: Displays - Volume 31, Issue 3, July 2010, Pages 128–131
نویسندگان
Jianzhuo Zhu, Wenlian Li, Bei Chu, Dongfang Yang, Guang Zhang, Fei Yan, Huihui Liu, Junbo Wang, Shuanghong Wu,