کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
748065 894731 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of rubidium chloride on properties of organic light-emitting diodes
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
The effect of rubidium chloride on properties of organic light-emitting diodes
چکیده انگلیسی

A multilayer organic light-emitting diode (OLED) was fabricated with a thin rubidium chloride (RbCl) layer inserted inside an electron transport layer (ETL), tris (8-hydroxyquinoline) aluminum (Alq3). Here, we set d is the distance of the RbCl layer away from the Alq3/Al interface. The rubidium chloride layer was inserted inside 60 nm Alq3 at d = 0.0, 2.5, 5.0, 7.5, 10, 20 and 30 nm positions. When the RbCl layer is positioned closer to the Al cathode, both the current density and EL efficiency are enhanced due to the enhanced electron injection. The devices show the electroluminescent (EL) efficiency improvement without an enhanced injection if the value of d is lager than 5.0 nm. The suggested mechanism of RbCl EL efficiency enhancer is carrier trap sites induced by the thin RbCl layer. The trapped charges alter the distribution of the field inside the OLED and, consequently, give better recombination in the device.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid-State Electronics - Volume 53, Issue 11, November 2009, Pages 1154–1158
نویسندگان
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