Researcher Gao Peng’s group from the Quantum Materials Science Center of the School of Physics uses low-dose atomic imaging to reveal the structure and decomposition path of organic-inorganic hybrid perovskites

Researcher Gao Peng’s research group and collaborators from the Quantum Materials Science Center and Electron Microscopy Laboratory of Peking University School of Physics used low-dose imaging technology to achieve the structural characterization of hybrid perovskite (CH ₃ NH ₃ PbI ₃ ) on the atomic scale and reveal it The decomposition path

Organic-inorganic hybrid perovskite materials have attracted much attention due to their excellent photovoltaic performance; studying their atomic structure will help to understand their photovoltaic performance and the mechanism of device failure caused by structural instability

Researcher Gao Peng’s research team cooperated with Professor Zhao Jinjin of Shijiazhuang Railway University, Researcher Wang Xiao from Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, and Professor Li Jiangyu from Southern University of Science and Technology, etc.

Recently, the joint research team successfully acquired the perovskite-type atomic structure of MAPbI ₃ at a very low electron beam dose (about 0.

MAPbI ₃The decomposition path on the atomic scale: (ae) As the dose increases, it gradually decomposes into a high resolution transmission electron microscope (HRTEM) image of the PbI ₂ process; (f, g) MAPbI ₃The atomic structure of and MA _0.

Chen Shulin, a full-time researcher in the Quantum Materials Science Center and Electron Microscopy Laboratory of the School of Physics, Peking University, and Wu Changwei, a postdoctoral fellow at Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, are the co-first authors, and Zhao Jinjin, Wang Xiao, Li Jiangyu and Gao Peng are the co-corresponding authors