کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1494179 1510797 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electroluminescence of fluorescent–phosphorescent organic light-emitting diodes with regular, inverted, and symmetrical structures
ترجمه فارسی عنوان
الکترو لومسیون فلورسنتا دیودهای آلی نور آلی فسفرسد با ساختارهای منظم، معکوس و متقارن
کلمات کلیدی
فلورسانس، فسفر رزونانس، الکترولیومینسانس، لایه انتشار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی


• The emission of device with an inverted-EML was color-stable.
• A color-tunable white OLED was obtained when a compensated-EML was prepared.
• Device with a symmetrical-EML achieved an improvement in EL efficiency.

The influence of the device structure on the electroluminescence (EL) properties of fluorescent–phosphorescent organic light emitting diodes (OLEDs) was demonstrated. Four devices with regular-, inverted-, compensated- and symmetrical-emission layers (EMLs) were prepared. In regular-EML device, DCJTB emission increased when the phosphorescent sensitized EML was thickened. In inverted-EML device, low electron energy barrier at the Bphen/BCzVB interface resulted in weakened blue emission. The compensated-EML device, prepared with a red color-compensated layer, showed a color-tunable broadband white emission. Conversely, device with a quantum-like symmetrical-EML showed a narrow color-temperature range. Stable EL efficiency was obtained from regular, compensated, and symmetrical-EML devices. In contrast, EL efficiency of inverted-EML device rolled off significantly, though it had the highest EL efficiency of 11.4 cd/A.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 37, November 2014, Pages 376–381
نویسندگان
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