Room-Temperature Magnetic Field Effect on Excitonic Photoluminescence in Perovskite Nanocrystals

doi:10.1002/adma.202008225

HFCAS OpenIR

	Room-Temperature Magnetic Field Effect on Excitonic Photoluminescence in Perovskite Nanocrystals
	Zhang, Kun 1; Zhao, Jian 1; Hu, Qingsong 2; Yang, Sijie 3; Zhu, Xixiang 4; Zhang, Yaqi 1; Huang, Ruiqin 1; Ma, Yongfu 1; Wang, Zhenxing 1; Ouyang, Zhongwen 1; Han, Junbo 1; Han, Yibo 1; Tang, Jiang 2; Tong, Wei5 ; Zhang, Lei5 ; Zhai, Tianyou 3
	2021-06-10
发表期刊	ADVANCED MATERIALS
ISSN	0935-9648
通讯作者	Han, Yibo(ybhan@hust.edu.cn) ; Zhai, Tianyou(zhaity@hust.edu.cn)
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.
关键词	excitons magnetic field effect orbital ordering perovskites photoluminescence
DOI	10.1002/adma.202008225
关键词[WOS]	QUANTUM DOTS ; SPIN ; POLARIZATION ; INJECTION ; DYNAMICS
收录类别	SCI
语种	英语
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]
项目资助者	Natural Science Foundation of China ; National Key R&D Program of China
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000659735800001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/123633
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.Huazhong Univ Sci & Technol, Sch Phys, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Hubei, Peoples R China 2.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, 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.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA 5.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Anhui, 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).