Change of the dominant luminescent mechanism with increasing current density in molecularly doped organic light-emitting devices
文献类型：期刊论文
| 作者 | Zhou L ; Zhang HJ ; Meng QG ; Liu FY ; Yu JB ; Deng RP ; Peng ZP ; Li ZF ; Guo ZY |
| 刊名 | journal of luminescence
 |
| 出版日期 | 2007 |
| 卷号 | 126期号:2页码:644-652 |
| 关键词 | EUROPIUM COMPLEX ELECTROLUMINESCENT DEVICES ENERGY-TRANSFER CRYSTALLINE ANTHRACENE PLASMA TREATMENT DIODES LAYER PERFORMANCE DYE QUINACRIDONE |
| ISSN号 | 0022-2313 |
| 通讯作者 | zhang hj |
| 中文摘要 | we have fabricated and measured a series of electroluminescent devices with the structure of ito/tpd/eu(tta)(3)phen (x):cbp/bcp/ alq/lif/al, where x is the weight percentage of eu(tta)3phen (from 0% to 6%). at very low current density, carrier trapping is the dominant luminescent mechanism and the 4% doped device shows the highest electroluminescence (el) efficiency among all these devices. with increasing current density, forster energy transfer participates in el process. at the current density of 10.0 and 80.0ma/ cm(2), 2% and 3% doped devices show the highest el efficiency, respectively. from analysis of the el spectra and the el efficiency-current density characteristics, we found that the el efficiency is manipulated by forster energy transfer efficiency at high current density. so we suggest that the dominant luminescent mechanism changes gradually from carrier trapping to forster energy transfer with increasing current density. moreover, the conversion of dominant el mechanism was suspected to be partly responsible for the el efficiency roll-off because of the lower el quantum efficiency of forster energy transfer compared with carrier trapping. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247409900062 |
| 公开日期 | 2010-07-13 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/13799]  |
| 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 | Zhou L,Zhang HJ,Meng QG,et al. Change of the dominant luminescent mechanism with increasing current density in molecularly doped organic light-emitting devices[J]. journal of luminescence,2007,126(2):644-652. |
| APA | Zhou L.,Zhang HJ.,Meng QG.,Liu FY.,Yu JB.,...&Guo ZY.(2007).Change of the dominant luminescent mechanism with increasing current density in molecularly doped organic light-emitting devices.journal of luminescence,126(2),644-652. |
| MLA | Zhou L,et al."Change of the dominant luminescent mechanism with increasing current density in molecularly doped organic light-emitting devices".journal of luminescence 126.2(2007):644-652. |
入库方式： OAI收割
来源：长春应用化学研究所
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