A combined single crystal neutron/X-ray diffraction and solid-state nuclear magnetic resonance study of the hybrid perovskites CH3NH3PbX3 (X = I, Br and Cl)

• Main Authors: Baikie, Tom, Barrow, Nathan S., Mhaisalkar, Subodh Gautam, White, Timothy John, Fang, Yanan, Keenan, Philip J., Slater, Peter R., Piltz, Ross O., Gutmann, Matthias
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2017
• Subjects: Perovskites; Neutron diffraction
• Online Access: https://hdl.handle.net/10356/85609; http://hdl.handle.net/10220/43741
• Institution: Nanyang Technological University

The 1H and 13C NMR spectra in methylammonium lead halide perovskites, CH3NH3PbX3 (X = I, Br and Cl) show that the CH3NH3+ units undergo dynamic reorientation, as the organic component tumbles in the perovskite cage. In addition, the differences in the anomalously long relaxation times of the protons...