Harvesting Excitons Via Two Parallel Channels for Efficient White Organic LEDs with Nearly 100% Internal Quantum Efficiency: Fabrication and Emission-Mechanism Analysis
文献类型：期刊论文
| 作者 | Wang Q ; Ding JQ ; Ma DG ; Cheng YX ; Wang LX ; Jing XB ; Wang FS |
| 刊名 | advanced functional materials
 |
| 出版日期 | 2009 |
| 卷号 | 19期号:1页码:84-95 |
| 关键词 | LIGHT-EMITTING-DIODES CYCLOMETALATED IRIDIUM COMPLEXES HIGHLY EFFICIENT SINGLE-POLYMER ELECTROPHOSPHORESCENT DEVICES ELECTROLUMINESCENT DEVICES PLATINUM(II) COMPLEXES RECENT ADVANCEMENTS TRIPLET EXCITONS CHARGE-CARRIERS |
| ISSN号 | 1616-301x |
| 通讯作者 | wang q |
| 中文摘要 | by incorporating two phosphorescent dyes, namely, iridium(iii)[bis(4,6-difluorophenyl)-pyridinato-n,c-2']picolinate (flrpic) for blue emission and bis(2-(9,9-diethyl-9h-fluoren-2-yl)-1-phenyl-1 h-benzoimidazol-n,c-3) iridium(acetylacetonate) ((fbi)(2)ir(acac)) for orange emission, into a single-energy well-like emissive layer, an extremely high-efficiency white organic light-emitting diode (woled) with excellent color stability is demonstrated. this device can achieve a peak forward-viewing power efficiency of 42.5 lm w-1, corresponding to an external quantum efficiency (eqe) of 19.3% and a current efficiency of 52.8 cd a(-1). systematic studies of the dopants, host and dopant-doped host films in terms of photophysical properties (including absorption, photoluminescence, and excitation spectra), transient photoluminescence, current density-voltage characteristics, and temperature-dependent electroluminescence spectra are subsequently performed, from which it is concluded that the emission natures of flrpic and (fbi)(2)ir(acac) are, respectively, host-guest energy transfer and a direct exciton formation process. these two parallel pathways serve to channel the overall excitons to both dopants, greatly reducing unfavorable energy losses. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000262584800007 |
| 公开日期 | 2010-05-27 |
| 源URL | [http://202.98.16.49/handle/322003/12227]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang Q,Ding JQ,Ma DG,et al. Harvesting Excitons Via Two Parallel Channels for Efficient White Organic LEDs with Nearly 100% Internal Quantum Efficiency: Fabrication and Emission-Mechanism Analysis[J]. advanced functional materials,2009,19(1):84-95. |
| APA | Wang Q.,Ding JQ.,Ma DG.,Cheng YX.,Wang LX.,...&Wang FS.(2009).Harvesting Excitons Via Two Parallel Channels for Efficient White Organic LEDs with Nearly 100% Internal Quantum Efficiency: Fabrication and Emission-Mechanism Analysis.advanced functional materials,19(1),84-95. |
| MLA | Wang Q,et al."Harvesting Excitons Via Two Parallel Channels for Efficient White Organic LEDs with Nearly 100% Internal Quantum Efficiency: Fabrication and Emission-Mechanism Analysis".advanced functional materials 19.1(2009):84-95. |
入库方式： OAI收割
来源：长春应用化学研究所
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