C-70/pentacene organic heterojunction as charge generator to realize highly efficient charge carrier injection in organic light-emitting diodes: performance and mechanism analysis
文献类型：期刊论文
| 作者 | Guo, Qingxun1; Sun, Hengda1; Yang, Dezhi1,2; Qiao, Xianfeng1,2; Chen, Jiangshan1,2; Ahamad, Tansir3; Alshehri, Saad M.3; Ma, Dongge1,2,3 |
| 刊名 | Advanced materials interfaces
 |
| 出版日期 | 2016-07-22 |
| 卷号 | 3期号:14页码:8 |
| 关键词 | Charge carrier injection Electrode Organic heterojunction Organic light-emitting diodes |
| ISSN号 | 2196-7350 |
| DOI | 10.1002/admi.201600081 |
| 通讯作者 | Ma, dongge(mdg1014@ciac.ac.cn) |
| 英文摘要 | Highly efficient charge carrier injection from electrodes is basically required for high-performance organic light-emitting diodes (oleds). however, the mismatch of metal work function and energy level of charge carrier transport layers inevitably introduces the injection barrier and also greatly restricts the choice of the electrode metals. here, a planar organic heterojunction (ohj) c-70/pentacene is used as charge generator to realize the highly efficient injection of charge carriers in oleds, not only achieving the high efficiency but also significantly improving the stability. more importantly, the resulting devices show an electrode work function-independent efficiency property, greatly broadening the selectivity of electrode metals. detailed studies are presented on the transport properties of electrons and holes in single-carrier devices based on c-70/pentacene ohj by current density-voltage (j-v) measurements at various temperatures. it can be seen that fowler-nordheim (f-n) tunnel model can be used to well demonstrate the j-v properties, indicating that the charge injection based on ohj is a tunnel process. the impedance measurements found that the lower lowest unoccupied molecular orbit energy level and higher electron mobility properties are very necessary for the used electron-transport materials to reduce the space charge region width, thus realizing highly efficient electron injection. |
| WOS关键词 | TRANSITION-METAL OXIDES ; HIGH-POWER EFFICIENCY ; PHOTOELECTRON-SPECTROSCOPY ; DEVICE PERFORMANCE ; SMALL-MOLECULE ; WORK FUNCTION ; LAYER ; SEMICONDUCTORS ; INTERFACES ; PENTACENE |
| WOS研究方向 | Chemistry ; Materials Science |
| WOS类目 | Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000380050400015 |
| 出版者 | WILEY-BLACKWELL |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2374556 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Ma, Dongge |
| 作者单位 | 1.Univ Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China 2.South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China 3.King Saud Univ, Dept Chem, Riyadh 11451, Saudi Arabia |
| 推荐引用方式 GB/T 7714 | Guo, Qingxun,Sun, Hengda,Yang, Dezhi,et al. C-70/pentacene organic heterojunction as charge generator to realize highly efficient charge carrier injection in organic light-emitting diodes: performance and mechanism analysis[J]. Advanced materials interfaces,2016,3(14):8. |
| APA | Guo, Qingxun.,Sun, Hengda.,Yang, Dezhi.,Qiao, Xianfeng.,Chen, Jiangshan.,...&Ma, Dongge.(2016).C-70/pentacene organic heterojunction as charge generator to realize highly efficient charge carrier injection in organic light-emitting diodes: performance and mechanism analysis.Advanced materials interfaces,3(14),8. |
| MLA | Guo, Qingxun,et al."C-70/pentacene organic heterojunction as charge generator to realize highly efficient charge carrier injection in organic light-emitting diodes: performance and mechanism analysis".Advanced materials interfaces 3.14(2016):8. |
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来源：中国科学院大学
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