کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5369880 | 1388460 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The effect of electric field strength on electroplex emission at the interface of NPB/PBD organic light-emitting diodes The effect of electric field strength on electroplex emission at the interface of NPB/PBD organic light-emitting diodes](/preview/png/5369880.png)
Organic light-emitting diode (OLED) based on two kinds of blue emission materials N,Nâ²-bis(1-naphthyl)-N,Nâ²-diphenyl-l,lâ²-diphenyl-4,4â²-diamine (NPB) and 2-(4-biphenylyl)-5(4-tert-butyl-phenyl)-1,3,4-oxadiazole (PBD) was fabricated. There is only one emission peak in photoluminescence (PL) spectrum which originates from NPB exciton emission. And the electroluminescence (EL) emission peaks have an apparent red-shift with the increase of driving voltage. The red-shift emission from exciplex emission could be ruled out. Thus, by the method of Gaussian fitting it should be ascribed to the overlap of exciton emission and electroplex emission which occurs at the interface between NPB and PBD. The formation of the electroplex emission under high electric field is analyzed.
Journal: Applied Surface Science - Volume 253, Issue 8, 15 February 2007, Pages 4025-4028