کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5404189 | 1505932 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electronic states of phosphorescent molecules Ir(ppy)3 and PtOEP used in organic light emitting diodes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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![عکس صفحه اول مقاله: Electronic states of phosphorescent molecules Ir(ppy)3 and PtOEP used in organic light emitting diodes Electronic states of phosphorescent molecules Ir(ppy)3 and PtOEP used in organic light emitting diodes](/preview/png/5404189.png)
چکیده انگلیسی
Photoluminescence (PL) of phosphorescent molecules fac tris (2-phenylpyridine) iridium (Ir(ppy)3) and platinum octaethyl porphine (PtOEP) has been studied using films of Ir(ppy)3 doped in CBP and PtOEP doped in TPD, respectively. A weak emission band is observed at 396Â nm in Ir(ppy)3. Its intensity increases with decreasing temperature from 300Â K. This emission is attributed to the singlet emission from 1MLCT state. The singlet emission band of PtOEP is observed at 542Â nm, which appears below 150Â K. The intersystem crossing conversion is estimated to be 98.7% for Ir(ppy)3. From the excitation spectra for Ir(ppy)3 emission, we suggest energy transfer from the n=1 vibrational state of Ir(ppy)3 to the n=0 state of CBP host.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volumes 119â120, JulyâOctober 2006, Pages 288-292
Journal: Journal of Luminescence - Volumes 119â120, JulyâOctober 2006, Pages 288-292
نویسندگان
Taiju Tsuboi,