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DOI | 10.1038/s41467-018-05743-y |
Ultrafast terahertz snapshots of excitonic Rydberg states and electronic coherence in an organometal halide perovskite | |
Luo, Liang1,2; Men, Long3,5; Liu, Zhaoyu1,2; Mudryk, Yaroslav1; Zhao, Xin1,2; Yao, Yongxin1,2; Park, Joong M.1,2; Shinar, Ruth1; Shinar, Joseph1,2; Ho, Kai-Ming1,2; Perakis, Ilias E.4; Vela, Javier3,5; Wang, Jigang1,2 | |
2017-06-01 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | How photoexcitations evolve into Coulomb-bound electron and hole pairs, called excitons, and unbound charge carriers is a key cross-cutting issue in photovoltaics and optoelectronics. Until now, the initial quantum dynamics following photoexcitation remains elusive in the hybrid perovskite system. Here we reveal excitonic Rydberg states with distinct formation pathways by observing the multiple resonant, internal quantum transitions using ultrafast terahertz quasi-particle transport. Nonequilibrium emergent states evolve with a complex co-existence of excitons, carriers and phonons, where a delayed buildup of excitons under onand off-resonant pumping conditions allows us to distinguish between the loss of electronic coherence and hot state cooling processes. The nearly similar to 1 ps dephasing time, efficient electron scattering with discrete terahertz phonons and intermediate binding energy of similar to 13.5 meV in perovskites are distinct from conventional photovoltaic semiconductors. In addition to providing implications for coherent energy conversion, these are potentially relevant to the development of light-harvesting and electron-transport devices. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402513300001 |
WOS关键词 | CARRIER DYNAMICS ; PHASE-TRANSITION ; SINGLE-CRYSTAL ; CH3NH3PBI3 ; ABSORPTION ; LENGTHS ; ENERGY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203954 |
专题 | 资源环境科学 |
作者单位 | 1.Iowa State Univ, Ames Lab, Div Mat Sci & Engn, Ames, IA 50011 USA; 2.Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA; 3.Iowa State Univ, Dept Chem, Ames, IA 50011 USA; 4.Univ Alabama Birmingham, Dept Phys, Birmingham, AL 35294 USA; 5.Iowa State Univ, Ames Lab, Div Chem & Biol Sci, Ames, IA 50011 USA |
推荐引用方式 GB/T 7714 | Luo, Liang,Men, Long,Liu, Zhaoyu,et al. Ultrafast terahertz snapshots of excitonic Rydberg states and electronic coherence in an organometal halide perovskite[J]. NATURE COMMUNICATIONS,2017,8. |
APA | Luo, Liang.,Men, Long.,Liu, Zhaoyu.,Mudryk, Yaroslav.,Zhao, Xin.,...&Wang, Jigang.(2017).Ultrafast terahertz snapshots of excitonic Rydberg states and electronic coherence in an organometal halide perovskite.NATURE COMMUNICATIONS,8. |
MLA | Luo, Liang,et al."Ultrafast terahertz snapshots of excitonic Rydberg states and electronic coherence in an organometal halide perovskite".NATURE COMMUNICATIONS 8(2017). |
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