| 磁场对(C4H9NH3)2(CH3NH3)Pb2I7钙钛矿发光特性调控的研究 |
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| 引用本文： | 王雅倩,鲁晓,彭波.磁场对(C4H9NH3)2(CH3NH3)Pb2I7钙钛矿发光特性调控的研究[J].化工学报,2020,71(6):2912-2917. |
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| 作者姓名： | 王雅倩 鲁晓 彭波 |
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| 作者单位： | 1.电子科技大学电子科学与工程学院，四川 成都 611731;2.电子科技大学国家电磁辐射控制材料工程技术研究中心，四川 成都 611731 |
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| 基金项目： | 国家自然科学基金青年基金项目 |
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| 摘 要： | (C4H9NH3)2(CH3NH3)Pb2I7是一种Ruddlesden-Popper相钙钛矿材料，具有层状结构，层间通过van der Waals力结合，因此可以通过机械剥离的方法，获得其二维薄层。二维(C4H9NH3)2(CH3NH3)Pb2I7内束缚激子会自发复合从而表现出强的荧光，其圆极化率、峰位均受磁场调控。在外磁场中，荧光圆极化率与磁场呈线性关系，激子中电子和空穴之间的朗德因子差Δg约为0.43。束缚激子在磁场中受抗磁效应影响，致使其发光峰随磁场增加而红移。
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| 关 键 词： | 纳米材料 纳米结构 制备 钙钛矿 荧光 磁场调控 |
| 收稿时间： | 2020-01-19 |
| 修稿时间： | 2020-03-24 |
Control of magnetic field to luminescence characteristics in (C4H9NH3)2(CH3NH3)Pb2I7 perovskite |
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| WANG Yaqian,LU Xiao,PENG Bo.Control of magnetic field to luminescence characteristics in (C4H9NH3)2(CH3NH3)Pb2I7 perovskite[J].Journal of Chemical Industry and Engineering(China),2020,71(6):2912-2917. |
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| Authors: | WANG Yaqian LU Xiao PENG Bo |
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| Affiliation: | 1.School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China;2.National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China |
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| Abstract: | (C4H9NH3)2(CH3NH3)Pb2I7 is a Ruddlesden-Popper phase perovskite material, has a layered structure, and the layers are combined by van der Waals forces. The two-dimensional layered perovskite can be obtained by mechanically exfoliated from bulk crystals, which display strong bound exciton spontaneous emission. The helicity parameter of the bound exciton is linear to the external magnetic field, giving rise to a giant Lande factor difference (Δg) of about 0.43 between the electron and hole of bound exciton. The antimagnetic effect leads to a redshift of bound exciton emission in magnetic field. |
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| Keywords: | nanomaterials nanostructure preparation perovskite photoluminescence magnetic field regulation |
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