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Application of Lead Acetate Additives in Printing Modified Solar Cells
Ist Teil von
Wu ji cai liao xue bao, 2022-01 (2), p.197
Ort / Verlag
Beijing: Chinese Academy of Sciences
Erscheinungsjahr
2022
Link zum Volltext
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
Printed perovskite solar cells use inorganic mesoporous frameworks to coat the device structure of organic-inorganic hybrid perovskite materials, with simple preparation process, low cost of raw materials, and excellent stability. However, it is difficult to uniformly deposit high-quality perovskite materials in the mesoporous framework. In this study , lead acetate (Pb(Ac)2 was introduced into the precursor solution of typical perovskite material methylamine lead iodide (MAPbI3)) as an additive to accelerate the nucleation of perovskite crystals to improve their growth and filling in the mesoporous framework. At the same time, the escape of MAAc formed by Ac– and MA+ during thermal annealing can cause a slight excess of PbI2 in the deposited perovskite photoactive layer, which can passivate the grain boundaries. The photoelectric conversion efficiency of the printed perovskite solar cells prepared by adding 1% Pb(Ac)2 perovskite precursor solution reached 15.42%, indicating that the introduction of additives