In recent years, lead-based perovskite single crystals exhibit excellent photoelectric properties due to their high absorption coefficients, long carrier transport distances, and high carrier mobility. However, lead-based perovskite materials are lead-free. Toxicity and other issues severely restrict its development. The development of non-lead perovskite crystalline materials and the assembly of optoelectronic functional devices has become a research hotspot in related fields.
The research team led by Luo Junhua, the State Key Laboratory of Structural Chemistry of the Institute of Structural Materials, Chinese Academy of Sciences, succeeded in the preparation of a lead-free high-quality single crystal. The perovskite single crystal material has a wide Absorbance range, very low density of defect states, and high carrier mobility; Planar array photodetectors made from this single-crystal material exhibit good detection performance and optical radiation to the intrinsic absorption region of the crystal. It can realize high sensitivity and rapid detection. As a potential hybrid semiconductor material, it will further expand the application range of non-lead inorganic/organic hybrid perovskite materials in solar cells, photoelectric detection, etc. Related research results are published in “Advanced Functional Materials”. Previously, the team made a series of progresses in relation to molecular-based phase transitions and structural design of ferroelectric compounds, performance control, and research on optoelectronic devices.
The research work was awarded the National Outstanding Youth Fund, the China National Natural Science Foundation of China’s Outstanding Youth Fund hosted by the Chinese Academy of Sciences’ Strategic Pioneering Science and Technology Project and Sun Zhihua, a researcher of the Haixi Research Institute of the Chinese Academy of Sciences’ team of 100 people, and the “Spring Miao Talent” specialization of the Haixi Research Institute of the Chinese Academy of Sciences. Funding for Fujian Outstanding Youth Fund.
