Improving color stability of blue/orange complementary white OLEDs by using single-host double-emissive layer structure: Comprehensive experimental investigation into the device working mechanism
文献类型：期刊论文
| 作者 | Zhao, Yongbiao; Zhu, Liping; Chen, Jiangshan; Ma, Dongge |
| 刊名 | ORGANIC ELECTRONICS
 |
| 出版日期 | 2012-08-01 |
| 卷号 | 13期号:8页码:1340-1348 |
| 关键词 | Organic Light Emitting Diode Color Stability Double Emissive Layer White |
| ISSN号 | 1566-1199 |
| DOI | 10.1016/j.orgel.2012.04.015 |
| 英文摘要 | In this paper, we successfully improved the spectral stability in blue/orange complementary white organic light-emitting diodes (OLEDs) by utilizing hole-type single host double emissive layer structure. The demonstrated double emissive layer structure effectively suppresses the direct recombination of electron-hole pairs on the hole-trapping orange phosphor and thus reduces the deteriorated effect of charge trapping on electroluminescence spectrum stability by controlling exciton recombination zone. It is shown that the white light emission is a cascade energy transfer process from host to blue phosphor and then to orange phosphor, which seems to be less affected by the driving conditions. Thus, the change in Commission Internationale de L'Eclairage coordinates (CIE) in the white OLEDs is less than (+/- 0.010, +/- 0.007) as the voltage increases from 4 V to 9 V, which correspond to the luminance increasing from 200 cd m(-2) to about 20,000 cd m(-2). This is superior to that of co-doped single emissive layer devices, which show much larger CIEs variation of (+/- 0.05, +/- 0.02) in the same driving voltage range. We gave detailed analysis on the exciton recombination processes and well elucidated the working mechanism of the fabricated double emissive layer structure white OLEDs. (C) 2012 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000304757900008 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49539]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, Jiangshan |
| 作者单位 | Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Grad Sch, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Yongbiao,Zhu, Liping,Chen, Jiangshan,et al. Improving color stability of blue/orange complementary white OLEDs by using single-host double-emissive layer structure: Comprehensive experimental investigation into the device working mechanism[J]. ORGANIC ELECTRONICS,2012,13(8):1340-1348. |
| APA | Zhao, Yongbiao,Zhu, Liping,Chen, Jiangshan,&Ma, Dongge.(2012).Improving color stability of blue/orange complementary white OLEDs by using single-host double-emissive layer structure: Comprehensive experimental investigation into the device working mechanism.ORGANIC ELECTRONICS,13(8),1340-1348. |
| MLA | Zhao, Yongbiao,et al."Improving color stability of blue/orange complementary white OLEDs by using single-host double-emissive layer structure: Comprehensive experimental investigation into the device working mechanism".ORGANIC ELECTRONICS 13.8(2012):1340-1348. |
入库方式： OAI收割
来源：化学研究所
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