吡啶诱导的碘化铅对甲脒碘化铅钙钛矿的钝化作用。

Cook Andre, Jones Timothy W, Wang Jacob Tse-Wei, Li Hua, Atkin Rob, Duffy Noel W, Donne Scott W, Wilson Gregory J

University of Newcastle Callaghan NSW 2308 Australia.

CSIRO Energy Centre Mayfield West NSW 2304 Australia

RSC Adv. 2020 Jun 23;10(40):23829-23833. doi: 10.1039/d0ra04641h. eCollection 2020 Jun 19.

Defects at discontinuities of the perovskite lattice limit the performance of the perovskite solar cell (PSC). Lead iodide (PbI) and pyridine have been shown to passivate these defects. We treat methylammonium lead iodide (MAPbI) films with pyridine solutions to investigate the effects of the two passivators. By comparing confocal fluorescence microscopy (CFM) images at 405 nm excitation and then at 559 nm excitation we demonstrate the pyridine treatment passivates and forms PbI crystallites which cause additional passivation.

钙钛矿晶格不连续处的缺陷限制了钙钛矿太阳能电池（PSC）的性能。碘化铅（PbI）和吡啶已被证明可钝化这些缺陷。我们用吡啶溶液处理甲脒碘化铅（MAPbI）薄膜，以研究这两种钝化剂的效果。通过比较405nm激发和559nm激发下的共聚焦荧光显微镜（CFM）图像，我们证明吡啶处理可钝化并形成PbI微晶，从而导致额外的钝化。