Reassigning the Pressure-Induced Phase Transitions of Methylammonium Lead Bromide Perovskite
文献类型：期刊论文
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| 作者 | Liang, Akun; Gonzalez-Platas, Javier; Turnbull, Robin; Popescu, Catalin; Fernandez-Guillen, Ismael; Abargues, Rafael; Boix, Pablo P.; Shi, Lan-Ting,; Errandonea, Daniel |
| 刊名 | Journal of the American Chemical Society
 ; Journal of the American Chemical Society
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| 出版日期 | 2022 ; 2022 |
| 卷号 | 144期号:43页码:20099-20108 |
| ISSN号 | 00027863 ; 00027863 |
| DOI | 10.1021/jacs.2c09457 ; 10.1021/jacs.2c09457 |
| 文献子类 | Article ; Article |
| 英文摘要 | The high-pressure crystal structure evolution of CH3NH3PbBr3 (MAPbBr3) perovskite has been investigated by single-crystal X-ray diffraction and synchrotron-based powder X-ray diffraction. Single-crystal X-ray diffraction reveals that the crystal structure of MAPbBr3 undergoes two phase transitions following the space-group sequence: Pm3¯ m → Im3¯ → Pmn21, unveiling the occurrence of a nonpolar/polar transition (Im3¯ → Pmn21). The transitions take place at around 0.8 and 1.8 GPa, respectively. This result contradicts the previously reported phase transition sequence: Pm3¯ m → Im3¯ →Pnma. In this work, the crystal structures of each of the three phases are determined from single-crystal X-ray diffraction analysis, which is later supported by Rietveld refinement of powder X-ray diffraction patterns. The pressure dependence of the crystal lattice parameters and unit-cell volumes are determined from the two aforementioned techniques, as well as the bulk moduli for each phase. The bandgap behavior of MAPbBr3 has been studied up to around 4 GPa, by means of single-crystal optical absorption experiments. The evolution of the bandgap has been well explained using the pressure dependence of the Pb-Br bond distance and Pb-Br-Pb angles as determined from single-crystal X-ray diffraction experiments. © 2022 American Chemical Society.; The high-pressure crystal structure evolution of CH3NH3PbBr3 (MAPbBr3) perovskite has been investigated by single-crystal X-ray diffraction and synchrotron-based powder X-ray diffraction. Single-crystal X-ray diffraction reveals that the crystal structure of MAPbBr3 undergoes two phase transitions following the space-group sequence: Pm3¯ m → Im3¯ → Pmn21, unveiling the occurrence of a nonpolar/polar transition (Im3¯ → Pmn21). The transitions take place at around 0.8 and 1.8 GPa, respectively. This result contradicts the previously reported phase transition sequence: Pm3¯ m → Im3¯ →Pnma. In this work, the crystal structures of each of the three phases are determined from single-crystal X-ray diffraction analysis, which is later supported by Rietveld refinement of powder X-ray diffraction patterns. The pressure dependence of the crystal lattice parameters and unit-cell volumes are determined from the two aforementioned techniques, as well as the bulk moduli for each phase. The bandgap behavior of MAPbBr3 has been studied up to around 4 GPa, by means of single-crystal optical absorption experiments. The evolution of the bandgap has been well explained using the pressure dependence of the Pb-Br bond distance and Pb-Br-Pb angles as determined from single-crystal X-ray diffraction experiments. © 2022 American Chemical Society. |
| 电子版国际标准刊号 | 15205126 ; 15205126 |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000877308700001 ; WOS:000877308700001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299815]  |
| 专题 | 高能物理研究所_东莞分部 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liang, Akun,Gonzalez-Platas, Javier,Turnbull, Robin,et al. Reassigning the Pressure-Induced Phase Transitions of Methylammonium Lead Bromide Perovskite, Reassigning the Pressure-Induced Phase Transitions of Methylammonium Lead Bromide Perovskite[J]. Journal of the American Chemical Society, Journal of the American Chemical Society,2022, 2022,144, 144(43):20099-20108, 20099-20108. |
| APA | Liang, Akun.,Gonzalez-Platas, Javier.,Turnbull, Robin.,Popescu, Catalin.,Fernandez-Guillen, Ismael.,...&Errandonea, Daniel.(2022).Reassigning the Pressure-Induced Phase Transitions of Methylammonium Lead Bromide Perovskite.Journal of the American Chemical Society,144(43),20099-20108. |
| MLA | Liang, Akun,et al."Reassigning the Pressure-Induced Phase Transitions of Methylammonium Lead Bromide Perovskite".Journal of the American Chemical Society 144.43(2022):20099-20108. |
入库方式： OAI收割
来源：高能物理研究所
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