کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402746 | 1392740 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solution-processed white organic light-emitting devices based on small-molecule materials
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Solution-processed white organic light-emitting devices based on small-molecule materials Solution-processed white organic light-emitting devices based on small-molecule materials](/preview/png/5402746.png)
چکیده انگلیسی
We investigated solution-processed films of 4,4â²-bis(2,2-diphenylvinyl)-1,1â²-bibenyl (DPVBi) and its blends with N,Nâ²-bis(3-methylphenyl)-(1,1â²-biphenyl)-4,4â²-diamine (TPD) by atomic force microscopy (AFM). The AFM result shows that the solution-processed films are pin-free and their morphology is smooth enough to be used in OLEDs. We have developed a solution-processed white organic light-emitting device (WOLEDs) based on small-molecules, in which the light-emitting layer (EML) was formed by spin-coating the solution of small-molecules on top of the solution-processed hole-transporting layer. This WOLEDs, in which the EML consists of co-host (DPVBi and TPD), the blue dopant (4,4â²-bis[2-(4-(N,N-diphenylamino)phenyl)vinyl]biphenyl) and the yellow dye (5,6,11,12-tetraphenylnaphtacene), has a current efficiency of 6.0Â cd/A at a practical luminance of 1000Â cd/m2, a maximum luminance of 22500Â cd/m2, and its color coordinates are quite stable. Our research shows a possible approach to achieve efficient and low-cost small-molecule-based WOLEDs, which avoids the complexities of the co-evaporation process of multiple dopants and host materials in vacuum depositions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 130, Issue 2, February 2010, Pages 321-325
Journal: Journal of Luminescence - Volume 130, Issue 2, February 2010, Pages 321-325
نویسندگان
Dongdong Wang, Zhaoxin Wu, Xinwen Zhang, Dawei Wang, Xun Hou,