Multifunctional Ammonium Sulfide Enables Highest Efficiency Lead–Tin Perovskite Solar Cells
Jing Song,
Tengfei Kong,
Zihan Zhao
et al.
Abstract:The commonly used hole transport layer (HTL) Poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) still has some shortcomings that will limit the development of Pb–Sn perovskite solar cells (PSCs). In this work, multifunctional ammonium sulfide (AS) is attempted to modify PEDOT:PSS/perovskite interface. AS has multiple effects on different functional layers and the device as a whole: a) optimize the perovskite crystallization by the formation of PbS nucleation sites; b) neutralize the acidity o… Show more
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