Observation of Internal Photoinduced Electron and Hole Separation in Hybrid Two-Dimentional Perovskite Films
文献类型：期刊论文
| 作者 | Zhang, Jun2; Liu, Junxue1,2,3; Leng, Jing1,3; Wu, Kaifeng1,3; Jin, Shengye1,3 |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 139期号:4页码:1432-1435 |
| ISSN号 | 0002-7863 |
| DOI | 10.1021/jacs.6b12581 |
| 文献子类 | Article |
| 英文摘要 | Two-dimensional (2D) organolead halide perovskites are promising for various optoelectronic applications. Here we report a unique spontaneous charge (electron/hole) separation property in multilayered (BA)(2)(MA)(n-1)PbnI3n+1 (BA = CH3(CH2)(3)NH3+, MA = CH3NH3+) 2D perovskite films by studying the charge carrier dynamics using ultrafast transient absorption and photoluminescence spectroscopy. Surprisingly, the 2D perovskite films, although nominally prepared as "n = 4", are found to be mixture of multiple perovskite phases, with n = 2, 3, 4 and approximate to infinity, that naturally align in the order of n along the direction perpendicular to the substrate. Driven by the band alignment between 2D perovskites phases, we observe consecutive photoinduced electron transfer from small-n to large-n phases and hole transfer in the opposite direction on hundreds of picoseconds inside the 2D film of similar to 358 nm thickness. This internal charge transfer efficiently separates electrons and holes to the upper and bottom surfaces of the films, which is a unique property beneficial for applications in photovoltaics and other optoelectronics devices. |
| WOS关键词 | LIGHT-EMITTING-DIODES ; QUANTUM CONFINEMENT ; HALIDE PEROVSKITES ; SEMICONDUCTORS ; NANOPLATELETS ; WELLS |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000393355600021 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/169694]  |
| 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 |
| 通讯作者 | Zhang, Jun; Jin, Shengye |
| 作者单位 | 1.Chinese Acad Sci, Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.China Univ Petr, Coll Chem Engn, State Key Lab Heavy Oil Proc, 66 Changjiang West Rd, Qingdao 266580, Peoples R China 3.Chinese Acad Sci, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Jun,Liu, Junxue,Leng, Jing,et al. Observation of Internal Photoinduced Electron and Hole Separation in Hybrid Two-Dimentional Perovskite Films[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2017,139(4):1432-1435. |
| APA | Zhang, Jun,Liu, Junxue,Leng, Jing,Wu, Kaifeng,&Jin, Shengye.(2017).Observation of Internal Photoinduced Electron and Hole Separation in Hybrid Two-Dimentional Perovskite Films.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,139(4),1432-1435. |
| MLA | Zhang, Jun,et al."Observation of Internal Photoinduced Electron and Hole Separation in Hybrid Two-Dimentional Perovskite Films".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139.4(2017):1432-1435. |
入库方式： OAI收割
来源：大连化学物理研究所
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