Organic semiconductor heterojunction as charge generation layer in tandem organic light-emitting diodes for high power efficiency
文献类型：期刊论文
| 作者 | Chen, Yonghua1; Wang, Qi2; Chen, Jiangshan1; Ma, Dongge1; Yan, Donghang1; Wang, Lixiang1 |
| 刊名 | ORGANIC ELECTRONICS
 |
| 出版日期 | 2012-07-01 |
| 卷号 | 13期号:7页码:1121-1128 |
| 关键词 | Tandem Organic Light-emitting Diodes Organic Semiconductor Heterojunction Charge Generation Layers Power Efficiency |
| ISSN号 | 1566-1199 |
| DOI | 10.1016/j.orgel.2012.03.013 |
| 英文摘要 | High-performance tandem organic light-emitting diodes (OLEDs) employing a buffer-modified C-60/pentacene organic semiconductor heterojunction (OHJ) as a charge generation layer (CGL) are demonstrated. The unique cooperation of charge generation, transport, and extraction processes occurred in the OHJ-based CGL remarkably reduces the operational voltage. As a result, an approximately twofold enhancement in power efficiency (21.9 lmW (1) VS 10.1 lmW (1)) can be achieved that has previously been suggested to be difficult for tandem OLEDs. When the pentacene is replaced by zinc phthalocyanine (ZnPc), copper phthalocyanine (CuPc), or phthalocyanine (H2Pc), a similar power efficiency improvement can be also achieved. The novel design concept of the buffer-modified OHJ-based CGL is superior to that of the conventional CGLs. The investigations on the operational mechanism are performed, from which it is found that the mobile charge carriers firstly are needed to be accumulated at both sides of the heterojunction interface and then transport along the two organic semiconductors in terms of their good carrier transport characteristics under an external electrical field, and finally inject into the corresponding electroluminescent (EL) units by the interfacial layers. (C) 2012 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000303917100001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/48925]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ma, Dongge |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Grad Sch, Changchun 130022, Peoples R China 2.Univ N Texas, Dept Chem, Denton, TX 76203 USA |
| 推荐引用方式 GB/T 7714 | Chen, Yonghua,Wang, Qi,Chen, Jiangshan,et al. Organic semiconductor heterojunction as charge generation layer in tandem organic light-emitting diodes for high power efficiency[J]. ORGANIC ELECTRONICS,2012,13(7):1121-1128. |
| APA | Chen, Yonghua,Wang, Qi,Chen, Jiangshan,Ma, Dongge,Yan, Donghang,&Wang, Lixiang.(2012).Organic semiconductor heterojunction as charge generation layer in tandem organic light-emitting diodes for high power efficiency.ORGANIC ELECTRONICS,13(7),1121-1128. |
| MLA | Chen, Yonghua,et al."Organic semiconductor heterojunction as charge generation layer in tandem organic light-emitting diodes for high power efficiency".ORGANIC ELECTRONICS 13.7(2012):1121-1128. |
入库方式： OAI收割
来源：化学研究所
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