| In the development and progress of society,the problems of resources and environment have been hindering and restricting the sustainable development of the country.Therefore,with the deterioration of the environment,the shortage of resources,the rapid development of science and technology,in the new era,research on clean and renewable energy has become a hot issue.Solar cells（also known as solar power generation technology or photovoltaic power generation technology）have become one of the most promising applications.Perovskite solar cells have become a hot topic in photovoltaic power generation due to their excellent performance.At present,the efficiency of single perovskite solar cells has reached 25.5%,which is equivalent to the efficiency of silicon based solar cells in large area application,attracting scientific exploration and research.The optimization of electron transport layer of CH3NH3Pb I3 perovskite solar cells has always been the focus of research by experts and scholars.Secondly,the instability of perovskite film under high humidity also puzzled researchers.Therefore,in this paper,the electron transport layer is optimized around high humidity to improve the performance of perovskite solar cells.This paper carries out the following work successively:By exploring the influence of ether and ethyl acetate mixed inverse solvent on the film quality of perovskite film,the characterization of Sn O2 and Sb-doped Sn O2 film and perovskite film,and the performance analysis of Ti O2,Sn O2 and Sb-doped Sn O2 devices.The photovoltaic performance parameters of MAPb I3 solar cells based on Sb-doped Sn O2 electron transport layer are as follows:Jsc=22.69 m A/cm2,Voc=1.11 V,FF=78.3%,PCE=19.74%,respectively.It is found that the photovoltaic efficiency of 19.74%can be achieved even at high humidity after Sn O2 is doped with Sb.This provides a feasible scheme for optimizing the performance of solar cell devices under high humidity. |
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