کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5397666 1505878 2017 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solution processed multilayer red, green and blue phosphorescent organic light emitting diodes using carbazole dendrimer as a host
ترجمه فارسی عنوان
راه حل دیودهای آلی رنگی آلی فسفرسد قرمز، سبز و آبی را با استفاده از کربازول دندریمر به عنوان میزبان پردازش کرد
کلمات کلیدی
دندریمر، دیود آلی نور آلی چند لایه، فرآیند حل، کربازول،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
4, 4'-bis(3,6-bis(3, 6-ditert-pentyl-carbazol-9-yl)carbazol-9-yl)-2,2'-dimethylbiphenyl, a novel carbazole dendrimer, has been synthesized. This compound shows an excellent thermal stability with a high glass transition temperature of 283 °C and decomposition temperature of 487 °C. Density functional theory is used to investigate the frontier orbitals. It was found that the Highest Occupied Molecular Orbital and the Lowest Unoccupied Molecular Orbital levels of 4, 4'-bis(3,6-bis(3, 6-ditert-pentyl-carbazol-9-yl)carbazol-9-yl)-2,2'-dimethylbiphenyl are nearly degenerate to the next highest or lowest frontier orbitals. The electron rich outer dendrons along with Highest Occupied Molecular Orbital level of 5.24 eV as determined from cyclic voltammetry makes 4, 4'-bis(3,6-bis(3,6-ditert-pentyl-carbazol-9-yl)carbazol-9-yl)-2,2'-dimethylbiphenyl a good hole transporting material. This compound also shows a triplet energy of 2.83 eV. Solution processable multilayer red, green and blue phosphorescent organic light emitting diodes are fabricated having 4, 4'-bis(3,6-bis(3,6-ditert-pentyl-carbazol-9-yl)carbazol-9-yl)-2,2'-dimethylbiphenyl as a hole transporting host. It was found that the CIE-coordinates remain constant within a wide range of brightness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 183, March 2017, Pages 150-158
نویسندگان
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