Engineered Directional Charge Flow in Mixed Two-Dimensional Perovskites Enabled by Facile Cation-Exchange
文献类型：期刊论文
| 作者 | Wu, Kaifeng1; Wang, Yu; Jin, Shengye1; Wang, Junhui; Leng, Jing; Liu, Junxue; He, Sheng |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2017-10-05 |
| 卷号 | 121期号:39页码:21281-21289 |
| 英文摘要 | Two-dimensional (2D) organolead halide perovskites are promising candidates for many optoelectronic applications in view of their improved moisture-resistance and tunability in bandgap energy as compared to their 3D counterparts. Herein, we demonstrate the use of cation exchange between A and B in (A)(2)(B)(n-1)PbnI3n+1 (A = CH3(CH2)(3)NH3+, B = CH3NH3+) to fabricate mixed 2D perovskites with well-controlled n-values of perovskite constituentsas well as their relative amounts. We find that the perovskite components in thin films can be systematically tuned from pure 3D to 2D mixture (containing multiple 2D components), and to pure single-phase 2D (n = 1) by simply adjusting the cation-exchange time. Extensive static and transient spectroscopic measurements show the internal electron-hole separation in the mixed 2D perovskite film clue to the ordered band alignment between different perovskite components. This engineered directional charge flow can be particularly helpful for the photovoltaic application of 2D perovskites. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | LIGHT-EMITTING-DIODES ; ORGANOMETAL HALIDE PEROVSKITE ; SOLAR-CELLS ; CH3NH3PBI3 PEROVSKITE ; QUANTUM CONFINEMENT ; 2D PEROVSKITES ; IODIDE ; TRANSFORMATION ; EFFICIENCY ; ELECTRON |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000412716300021 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/150230]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Kaifeng,Wang, Yu,Jin, Shengye,et al. Engineered Directional Charge Flow in Mixed Two-Dimensional Perovskites Enabled by Facile Cation-Exchange[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2017,121(39):21281-21289. |
| APA | Wu, Kaifeng.,Wang, Yu.,Jin, Shengye.,Wang, Junhui.,Leng, Jing.,...&He, Sheng.(2017).Engineered Directional Charge Flow in Mixed Two-Dimensional Perovskites Enabled by Facile Cation-Exchange.JOURNAL OF PHYSICAL CHEMISTRY C,121(39),21281-21289. |
| MLA | Wu, Kaifeng,et al."Engineered Directional Charge Flow in Mixed Two-Dimensional Perovskites Enabled by Facile Cation-Exchange".JOURNAL OF PHYSICAL CHEMISTRY C 121.39(2017):21281-21289. |
入库方式： OAI收割
来源：大连化学物理研究所
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