| Presentation | 2007/6/18 Organic light emitting devices : The efficiency of polymer light emitting devices with phosphorescent dopant affected by ETL thickness Kyung-Pil Na, Chan-Jae Lee, Byeong-Kwon Ju, Jeong-In Han, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We demonstrate the efficiency of polymer light-emitting devices (PLED) with a phosphorescent dopant affected by (Electron Transport Layer) ETL thickness. This device has a structure of indium tin oxide(ITO) glass/ PEDOT : PSS/ PVK doped with phosphorescent materials(FIrpic)/ BCP / Alq_3 / LiF : Al. The HBL(Hole Blocking Layer) used for a high efficiency, but the using HBL is a higher operating voltage than the excluding HBL. Thus, we controlled thickness of HBL and ETL as 5～25 nm, but fixed other structural layer. Some of experiment fixed thickness of HBL (5 nm) and varied thickness of ETL (10～25 nm). Other of experiment fixed thickness of ETL (20 nm) and varied thickness of HBL (5～25 nm). We estimate that thickness of ETL is more sensitive than thickness of HBL in efficiency. This PLED device exhibited an emission maximum at a wavelength =474nm, a maximum brightness of 3012 cd/m^2 and an efficiency at 2.15 cd/A achieved at a driving voltage of 16V. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | phosphorescent / polymer light emitting devices / efficiency / HBL / ETL |
| Paper # | ED2007-132,SDM2007-137 |
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| Conference Information | |
| Committee | ED |
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| Conference Date | 2007/6/18(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electron Devices (ED) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Organic light emitting devices : The efficiency of polymer light emitting devices with phosphorescent dopant affected by ETL thickness |
| Sub Title (in English) | |
| Keyword(1) | phosphorescent |
| Keyword(2) | polymer light emitting devices |
| Keyword(3) | efficiency |
| Keyword(4) | HBL |
| Keyword(5) | ETL |
| 1st Author's Name | Kyung-Pil Na |
| 1st Author's Affiliation | Information Display Research Center, Korea Electronics Technology Institute:School of Electrical Engineering, College of Engineering, Korea University() |
| 2nd Author's Name | Chan-Jae Lee |
| 2nd Author's Affiliation | Information Display Research Center, Korea Electronics Technology Institute |
| 3rd Author's Name | Byeong-Kwon Ju |
| 3rd Author's Affiliation | School of Electrical Engineering, College of Engineering, Korea University |
| 4th Author's Name | Jeong-In Han |
| 4th Author's Affiliation | Information Display Research Center, Korea Electronics Technology Institute |
| Date | 2007/6/18 |
| Paper # | ED2007-132,SDM2007-137 |
| Volume (vol) | vol.107 |
| Number (no) | 110 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |