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    Home > The research team of Professor Song Yanlin from the Institute of chemistry, Chinese Academy of Sciences has made an important breakthrough in the research of wearable perovskite solar power supply

    The research team of Professor Song Yanlin from the Institute of chemistry, Chinese Academy of Sciences has made an important breakthrough in the research of wearable perovskite solar power supply

    • Last Update: 2018-12-15
    • Source: Internet
    • Author: User
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    Wearable electronics is an important direction of research and development of electronic components in the future, in which power supply is the core component The way and efficiency of power supply affect the design and function of wearable electronics in the future At present, the power supply of wearable electronic equipment is mainly lithium-ion battery, its inherent characteristics limit the outdoor use, safety and skin fit of wearable electronic equipment to a certain extent In recent years, metal organic hybrid perovskite solar cells have been widely concerned for its excellent photoelectric conversion performance, which provides the possibility for its application as a power source in wearable electronic devices So far, however, the flexible perovskite solar cells have not been used in wearable electronic devices One of the important reasons is the brittleness of perovskite material itself, which leads to poor reproducibility of large area battery efficiency and inability to adapt to complex human movements In recent years, Professor Song Yanlin's research team of the Institute of chemistry of the Chinese Academy of Sciences has carried out research in the field of printing perovskite crystal and battery devices They have made progress in the field of printing perovskite materials, and achieved the preparation of ink-jet printing materials that are more environmentally friendly than traditional processes; controlled growth of perovskite single crystal materials has been achieved by controlling the printing process A series of progress has also been made in the patterning design of battery devices The team prepared honeycomb like nano bracket as mechanical buffer layer and optical resonator through nano assembly printing, which significantly improved the photoelectric conversion efficiency and mechanical stability of flexible perovskite solar cells On the basis of the above research, Professor Song Yanlin's research team, inspired by the crystallization mechanism and structure of nacre in nature, introduced amphiphilic elastic crystal matrix into perovskite precursor solution to solve the brittleness problem of perovskite crystal film The results show that the vertical parallel structure growth of perovskite crystal can be realized by adjusting the doping amount, and the effect of transverse grain boundary on the device efficiency can be eliminated At the same time, the elastic "brick mud" structure formed by this crystallization mode has achieved a breakthrough in the mechanical stability and realized the tensile function of the plane film for the first time Through the biomimetic crystallization and structural design, the photoelectric conversion efficiency of the prepared flexible perovskite solar cell is more than 15% The solar cell module has the advantages of high photoelectric conversion efficiency, stable performance and strong wearable fit, which is expected to be applied to wearable electronic devices The research results were published on energy energy energy SCI (DOI: 10.1039 / c8ee01799a).
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