Chain-length dependence of singlet and triplet exciton formation rates in organic light-emitting diodes
文献类型：期刊论文
| 作者 | Beljonne, D; Ye, AJ; Shuai, Z; Bredas, JL |
| 刊名 | ADVANCED FUNCTIONAL MATERIALS
 |
| 出版日期 | 2004-07-01 |
| 卷号 | 14期号:7页码:684-692 |
| ISSN号 | 1616-301X |
| DOI | 10.1002/adfm.200305176 |
| 英文摘要 | The operation and efficiencies of molecular or polymer organic light-emitting diodes depend on the nature of the excited species that are formed. The lowest singlet and triplet excitons display different characteristics that impact on the quantum yields achievable in the devices. Here, by performing correlated quantum-chemical calculations that account for both the electronic couplings and energetics of the charge-recombination process from a pair of positive and negative polarons into singlet and triplet excitons, we show that the formation rates for singlet over triplet excitons vary with chain length and favor singlet excitons in longer chains. Thus, in polymer devices, the resulting singlet/triplet fraction can significantly exceed the spin-statistical limit. |
| 语种 | 英语 |
| WOS记录号 | WOS:000223180700007 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/82105]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Beljonne, D |
| 作者单位 | 1.Univ Mons, B-7000 Mons, Belgium 2.Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA 3.Chinese Acad Sci, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Beljonne, D,Ye, AJ,Shuai, Z,et al. Chain-length dependence of singlet and triplet exciton formation rates in organic light-emitting diodes[J]. ADVANCED FUNCTIONAL MATERIALS,2004,14(7):684-692. |
| APA | Beljonne, D,Ye, AJ,Shuai, Z,&Bredas, JL.(2004).Chain-length dependence of singlet and triplet exciton formation rates in organic light-emitting diodes.ADVANCED FUNCTIONAL MATERIALS,14(7),684-692. |
| MLA | Beljonne, D,et al."Chain-length dependence of singlet and triplet exciton formation rates in organic light-emitting diodes".ADVANCED FUNCTIONAL MATERIALS 14.7(2004):684-692. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。