Dalian Broadcasting Network, Dalian, September 23 (Reporter Jia Tiesheng, Zhang Siqing, correspondent Tian Wenming) Recently, the research team led by the researcher led by Jin Shengyu, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, made new progress in the study of carrier dynamics in metal-organic perovskite solar cells. It was found that the perovskite in the perovskite solar cell - the microscopic non-uniform distribution of the carrier extraction efficiency at the electrode interface is one of the factors limiting the efficiency of the battery. The related research results are published online at Angew. Chem. Int. Ed. (http://dx.doi.org/10.1002/anie.201606574).
In recent years, the metal-organic perovskite material CH3NH3PbX3 (X=Cl, Br, I) has become an important research hotspot in the world due to its great application value in constructing high-efficiency, low-cost solar cells and other optoelectronic devices. One of the materials. So far, the photoelectric conversion efficiency of solar cells based on such materials has reached 22.1%, but there is still much room for improvement compared with the theoretical value. Therefore, exploring the influence of the non-uniformity of the microstructure of the perovskite film on carrier lifetime, mobility and battery performance is necessary to further improve the efficiency of the solar cell.
Recently, the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences conducted research through independent equipment to find that improving the uniformity of grain and electron (hole) receptor interface contact in perovskite film is an important direction to improve the efficiency of solar cells. The result provides a new idea for further improving the efficiency of perovskite solar cells.
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