کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1267532 972358 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anthracene derivatives as efficient emitting hosts for blue organic light-emitting diodes utilizing triplet–triplet annihilation
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Anthracene derivatives as efficient emitting hosts for blue organic light-emitting diodes utilizing triplet–triplet annihilation
چکیده انگلیسی

The molecular design strategies for the host materials suitable for highly efficient, blue fluorescent organic light-emitting diodes (OLEDs) are demonstrated. The device characteristics of blue fluorescent OLEDs are compared with different host materials. Some devices exhibit a highly efficient blue electroluminescence with a high external quantum efficiency of more than 7%. The correlation between OLED efficiency and triplet–triplet annihilation is characterized by measuring the up-conversion of triplet excited states into singlet ones. The host materials require an anthracene unit and a bulky molecular structure to prevent the overlap of anthracene units between adjacent molecules in the film.

Figure optionsDownload as PowerPoint slideHighlights
► Molecular design strategies for the host materials suitable for efficient, blue fluorescent OLEDs.
► External quantum efficiency of over 7% in blue fluorescent OLEDs.
► Effect of excimer formation of host material on the efficiency of OLEDs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 13, Issue 7, July 2012, Pages 1197–1203
نویسندگان
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