کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1267604 972365 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simply structured, deep-blue phosphorescent organic light-emitting diode with bipolar host material
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Simply structured, deep-blue phosphorescent organic light-emitting diode with bipolar host material
چکیده انگلیسی

We developed an efficient, deep-blue phosphorescent organic light-emitting diode (POLED) with a simplified device structure using a new host material. There are only three organic layers in the deep-blue POLED, namely, a hole-transporting layer, an emitting layer and an electron-transporting layer. The new host material exhibits bipolar carrier transportability and high triplet energy. The POLED utilizes a phosphorescent guest material, iridium(III) bis(4′,6′,-difluorophenylpyridinato)tetrakis(1-pyrazolyl)borate, that exhibits an external quantum efficiency of about 13% and a power efficiency of about 15 lm/W at a current density of 0.1 mA/cm2. The efficiencies of the POLED are comparable to those of conventional POLEDs consisting of at least four organic layers. The bipolar host material will be useful for simplifying the device structure of deep-blue POLEDs.

Figure optionsDownload as PowerPoint slideHighlights
► Simply structured, efficient deep-blue OLED.
► Novel host material with a bipolar carrier transportability and a high triplet energy.
► External quantum efficiency of about 13% and a power efficiency of about 15 lm/W in deep-blue phosphorescent OLED.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 12, Issue 10, October 2011, Pages 1638–1643
نویسندگان
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