کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399703 | 1505907 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Blue and white phosphorescent organic light emitting diode performance improvement by confining electrons and holes inside double emitting layers
ترجمه فارسی عنوان
بهبود عملکرد دیود آبی رنگ آبی و سفید با محدود کردن الکترون و سوراخ در لایه های دوگانه انتشار
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کلمات کلیدی
لایه ای مجزا، نرخ بازسازی، محدود کردن، فیلم پیشرفت خارج کردن،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
In this research, complex emitting layers (EML) were fabricated using TCTA doping hole-transport material in the front half of a bipolar 26DCzPPy as well as PPT doping electron-transport material in the back half of 26DCzPPy. Blue dopant FIrpic was also mixed inside the complex emitting layer to produce a highly efficient blue phosphorescent organic light emitting diode (OLED). The hole and electron injection and carrier recombination rate were effectively increased. The fabricated complex emitting layers exhibited current efficiency of 42Â cd/A and power efficiency of 30Â lm/W when the luminance was 1000Â cd/m2, driving voltage was 4.4Â V, and current density was 2.4Â mA/cm2. A white OLED component was then manufactured by doping red dopant [Os(bpftz)2(PPh2Me)2] (Os) in proper locations. When the Os dopant was doped in between the complex emitting layers, excitons were effectively confined within, increasing the recombination rate and therefore reducing the color shift. The resulting Commission Internationale de L'Eclairage (CIE) coordinates shifted from 4 to 10Â V is (Îx=â0.04, Îy=+0.01). The component had a current efficiency of 35.7Â cd/A, a power efficiency of 24Â lm/W, driving voltage of 4.6Â V and a CIEx,y of (0.31,0.35) at a luminance of 1000Â cd/m2, with a maximum luminance of 15,600Â cd/m2 at 10Â V. Attaching an outcoupling enhancement film was applied to increase the luminance efficiency to 30Â lm/W.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 153, September 2014, Pages 312-316
Journal: Journal of Luminescence - Volume 153, September 2014, Pages 312-316
نویسندگان
Yu-Sheng Tsai, Lin-Ann Hong, Fuh-Shyang Juang, Cheng-Yin Chen,