کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1442786 | 1509448 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Control of efficiency characteristics in green phosphorescent organic light-emitting devices
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The efficiency characteristics in green phosphorescent devices at low luminance as well as high luminance were investigated by using single, host-mixed and multiple emitting layer (EML) structure. 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP) was used as a host suppressing electron injection and transport, whilst a host (GH) with a spirobifluorene-type backbone was used as a host enhancing electron injection and transport. When two hosts were optimally mixed (CBP:GH = 3:1) or a triple EML structure with GH–EML sandwiched between two CBP–EMLs were used, the improved current efficiency at high luminance was obtained and at the same time, the current efficiency at low luminance was maintained low.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 160, Issues 1–2, January 2010, Pages 35–38
Journal: Synthetic Metals - Volume 160, Issues 1–2, January 2010, Pages 35–38
نویسندگان
Ji Hwan Yoon, Jun Yeob Lee,