Investigation of electron transport properties in Li2CO3-doped Bepp(2) thin films
文献类型：期刊论文
| 作者 | Wang, Y. P.1; Qiao, X. F.1; Yang, D. Z.1; Huang, J. Y.1; Chen, J. S.1; Ma, D. G.1; Dong, L. S.2 |
| 刊名 | ORGANIC ELECTRONICS
 |
| 出版日期 | 2015-11-01 |
| 卷号 | 26页码:86-91 |
| 关键词 | Electron transport Li2CO3-doped Bepp(2) films Admittance spectroscopy |
| 英文摘要 | The admittance spectroscopy investigations showed that doping lithium carbonate (Li2CO3) into bi s[2-(2-hydroxyphenyl)-pyridine] beryllium (Bepp(2)) greatly improved the electron mobility compared with the pure Bepp(2) film. The electron mobility reaches the orders of similar to 10 (4) cm(2) V (1) s (1), almost independent of the electric field. The trap states at low frequencies were clearly observed by capacitance-frequency measurement. The current-voltage and current-thickness characteristics indicated the electron conduction of space-charge-limited current (SCLC) with discrete trap distributions in the intermediate voltage and the SCLC with exponential trap distribution at the higher voltage in the Li2CO3-doped Bepp(2) film. We further estimated the density of trap states to be about 4.54 x 10(17) cm (3) by the temperature dependent current density characteristics. The investigation of ultraviolet photoemission spectroscopy (UPS) and X-ray photoemission spectroscopy (XPS) found that there occurs complicated chemical reaction between Bepp(2) and Li2CO3, and the Bepp(2) traps more electrons after Li2CO3 doping. This is an effective charge transfer between Bepp(2) and Li2CO3, which greatly reduces the electron injection barrier and significantly enhances the electron mobility. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-10-27 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/27626]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Polymer Ecomat, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Y. P.,Qiao, X. F.,Yang, D. Z.,et al. Investigation of electron transport properties in Li2CO3-doped Bepp(2) thin films[J]. ORGANIC ELECTRONICS,2015,26:86-91. |
| APA | Wang, Y. P..,Qiao, X. F..,Yang, D. Z..,Huang, J. Y..,Chen, J. S..,...&Dong, L. S..(2015).Investigation of electron transport properties in Li2CO3-doped Bepp(2) thin films.ORGANIC ELECTRONICS,26,86-91. |
| MLA | Wang, Y. P.,et al."Investigation of electron transport properties in Li2CO3-doped Bepp(2) thin films".ORGANIC ELECTRONICS 26(2015):86-91. |
入库方式： OAI收割
来源：化学研究所
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