کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1788138 1023461 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simple-structure white organic light emitting diodes with high color temperature
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Simple-structure white organic light emitting diodes with high color temperature
چکیده انگلیسی

We present high color temperature white organic light emitting diodes with a simple p-i-n structure. A sky blue phosphorescent dopant of iridium(III) bis[4,6-(difluorophenyl)-pyridinato-N,C2’] picolinate and a red phosphorescent dopant of bis(2-phenylquinoline)(acetylacetonate)iridium(III) in the emissive layers is employed to make high color temperature devices. Very stable color variation under ▵0.02 until a 5000 cd/m2 brightness value is realized by efficient carrier control in a multi stacked emitting layer of blue/red/blue colors. Maximum current and power efficiencies of 23.8 cd/A and 22.9 lm/W in forward direction are obtained. With balanced emissions from the two emitters, the white light emission with very high correlated color temperature of 7308 K as well as CIE coordinates of (0.30, 0.33) is achieved.


► High color temperature white organic light emitting diodes.
► Satisfaction of CIE coordinates within the quadrangle of solid state lighting applications.
► Stable color variation of white organic light emitting diodes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 12, Supplement 1, September 2012, Pages e42–e45
نویسندگان
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