کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9812283 1518110 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Efficient sodium chlorate/calcium/aluminum cathode for polymer light-emitting diodes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Efficient sodium chlorate/calcium/aluminum cathode for polymer light-emitting diodes
چکیده انگلیسی
A cathode system comprising an ultra thin sodium chlorate (NaCl) layer and an overlaid calcium (Ca) metal in polymer light-emitting diodes (PLEDs) based on poly[2-methoxy,5-(2-ethylhexoxy)-1,4-phenylene vinylene] is presented. It is demonstrated that introducing a thin NaCl layer further improves the brightness and electroluminescent efficiency of PLEDs. The maximum brightness and efficiency, respectively, reached 22 000 cd/m2 and 3.5 lm/W for PLEDs with a 1 nm NaCl layer, which are much higher than 18 500 cd/m2 and 2.0 lm/W for PLEDs with Ca cathode. The investigation of the electron injection in electron-only devices with and without a NaCl layer indicates that the introduction of the NaCl layer substantially enhances the electron injection current, which in case of PLEDs leads to the improvement of the brightness and efficiency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 489, Issues 1–2, 1 October 2005, Pages 262-265
نویسندگان
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