Room-Temperature Magnetic Field Effect on Excitonic Photoluminescence in Perovskite Nanocrystals
文献类型：期刊论文
| 作者 | Zhang, Kun5; Zhao, Jian5; Hu, Qingsong4; Yang, Sijie3; Zhu, Xixiang1; Zhang, Yaqi5; Huang, Ruiqin5; Ma, Yongfu5; Wang, Zhenxing5; Ouyang, Zhongwen5 |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2021-06-10 |
| 关键词 | excitons magnetic field effect orbital ordering perovskites photoluminescence |
| ISSN号 | 0935-9648 |
| DOI | 10.1002/adma.202008225 |
| 通讯作者 | Han, Yibo(ybhan@hust.edu.cn) ; Zhai, Tianyou(zhaity@hust.edu.cn) |
| 英文摘要 | Magnetic-field-enhanced spin-polarized electronic/optical properties in semiconductors are crucial for fabricating various spintronic devices. However, this spin polarization is governed by weak spin exchange interactions and easily randomized by thermal fluctuations; therefore, it is only produced at cryogenic temperatures, which severely limits the applications. Herein, a room-temperature intrinsic magnetic field effect (MFE) on excitonic photoluminescence is achieved in CsPbX3:Mn (X = Cl, Br) perovskite nanocrystals. Through moderate Mn doping, the MFE is enhanced by exciton-Mn interactions, and through partial Br substitution, the MFE is stabilized at room temperature by exciton orbital ordering. The orbital ordering significantly enhances the g-factor difference between electrons and holes, which is evidenced by a parallel orbit-orbit interaction among excitons generated by circular polarized laser excitation. This study provides a clear avenue for engineering spintronic materials based on orbital interactions in perovskites. |
| WOS关键词 | QUANTUM DOTS ; SPIN ; POLARIZATION ; INJECTION ; DYNAMICS |
| 资助项目 | Natural Science Foundation of China[11974126] ; Natural Science Foundation of China[11104097] ; Natural Science Foundation of China[21825103] ; National Key R&D Program of China[2016YFA0401704] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000659735800001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | Natural Science Foundation of China ; National Key R&D Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/123632]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Han, Yibo; Zhai, Tianyou |
| 作者单位 | 1.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA 2.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Anhui, Peoples R China 3.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China 4.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China 5.Huazhong Univ Sci & Technol, Sch Phys, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Kun,Zhao, Jian,Hu, Qingsong,et al. Room-Temperature Magnetic Field Effect on Excitonic Photoluminescence in Perovskite Nanocrystals[J]. ADVANCED MATERIALS,2021. |
| APA | Zhang, Kun.,Zhao, Jian.,Hu, Qingsong.,Yang, Sijie.,Zhu, Xixiang.,...&Zhai, Tianyou.(2021).Room-Temperature Magnetic Field Effect on Excitonic Photoluminescence in Perovskite Nanocrystals.ADVANCED MATERIALS. |
| MLA | Zhang, Kun,et al."Room-Temperature Magnetic Field Effect on Excitonic Photoluminescence in Perovskite Nanocrystals".ADVANCED MATERIALS (2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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