کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10411199 894558 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Charge injection and transport model in organic light-emitting diodes with aluminum cathodes prepared by ion beam assisted deposition
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Charge injection and transport model in organic light-emitting diodes with aluminum cathodes prepared by ion beam assisted deposition
چکیده انگلیسی
We have fabricated highly stable organic electroluminescent devices based on spin-coated poly-p-phenylene-vynylene (PPV) thin films. The electrical properties of aluminum cathode, prepared by ion beam assisted deposition, on PPV have been investigated and compared to those by thermal evaporation. Although energetic particles of Al assisted by Ar+ ion may damage the organic material, I-V-L characteristics are improved by applying thin Al buffer layer. In addition, a dense Al cathode inhibits the permeation of H2O and O2 into PPV film through pinhole defects, and thus retards dark spot growth. It may be deduced from highly packed structure of Al cathode with smaller junction resistance between Al and PPV. In conclusion, the lifetime of organic light-emitting device (OLED) has been extended effectively by dense Al film through ion beam assisted deposition process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid-State Electronics - Volume 49, Issue 2, February 2005, Pages 205-212
نویسندگان
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