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DOI | 10.1038/s41467-017-02430-2 |
Indirect tail states formation by thermal-induced polar fluctuations in halide perovskites | |
Wu, Bo1,8; Yuan, Haifeng2; Xu, Qiang1; Steele, Julian A.3; Giovanni, David1; Puech, Pascal4; Fu, Jianhui1; Ng, Yan Fong5,6; Jamaludin, Nur Fadilah5,6; Solanki, Ankur1; Mhaisalkar, Subodh5,6; Mathews, Nripan5,6; Roeffaers, Maarten B. J.3; Gratzel, Michael6,7; Hofkens, Johan2; Sum, Tze Chien1 | |
2019-01-29 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2019 |
卷号 | 10 |
文章类型 | Article |
语种 | 英语 |
国家 | Singapore; Belgium; France; Switzerland; Peoples R China |
英文摘要 | Halide perovskites possess enormous potential for various optoelectronic applications. Presently, a clear understanding of the interplay between the lattice and electronic effects is still elusive. Specifically, the weakly absorbing tail states and dual emission from perovskites are not satisfactorily described by existing theories based on the Urbach tail and reabsorption effect. Herein, through temperature-dependent and time-resolved spectroscopy on metal halide perovskite single crystals with organic or inorganic A-site cations, we confirm the existence of indirect tail states below the direct transition edge to arise from a dynamical Rashba splitting effect, caused by the PbBr6 octahedral thermal polar distortions at elevated temperatures. This dynamic effect is distinct from the static Rashba splitting effect, caused by non-spherical A-site cations or surface induced lattice distortions. Our findings shed fresh perspectives on the electronic-lattice relations paramount for the design and optimization of emergent perovskites, revealing broad implications for light harvesting/photo-detection and light emission/lasing applications. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456960200010 |
WOS关键词 | BAND-GAP ; RADIATIVE RECOMBINATION ; CHARGE SEPARATION ; LEAD ; RASHBA ; METHYLAMMONIUM ; CARRIER ; TRANSITION ; TRIHALIDE ; EMISSION |
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/203607 |
专题 | 资源环境科学 |
作者单位 | 1.Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore; 2.Katholieke Univ Leuven, Dept Chem, Celestijnenlaan 200F, B-3001 Leuven, Belgium; 3.Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, Celestijnenlaan 200F, B-3001 Leuven, Belgium; 4.Univ Toulouse, CNRS, CEMES, F-31055 Toulouse, France; 5.Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore; 6.Energy Res Inst NTU ERI N, Res Tech Plaza,X Frontier Block,Level 5, Singapore 637553, Singapore; 7.Swiss Fed Inst Technol, Dept Chem & Chem Engn, Lab Photon & Interfaces, Stn 6, CH-1015 Lausanne, Switzerland; 8.South China Normal Univ, South China Acad Adv Optoelect, Inst Elect Paper Displays, Guangzhou 510006, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Bo,Yuan, Haifeng,Xu, Qiang,et al. Indirect tail states formation by thermal-induced polar fluctuations in halide perovskites[J]. NATURE COMMUNICATIONS,2019,10. |
APA | Wu, Bo.,Yuan, Haifeng.,Xu, Qiang.,Steele, Julian A..,Giovanni, David.,...&Sum, Tze Chien.(2019).Indirect tail states formation by thermal-induced polar fluctuations in halide perovskites.NATURE COMMUNICATIONS,10. |
MLA | Wu, Bo,et al."Indirect tail states formation by thermal-induced polar fluctuations in halide perovskites".NATURE COMMUNICATIONS 10(2019). |
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