Zoom link: https://kaust.zoom.us/j/96035347870 

Abstract

Perovskite solar cells (PSCs) have emerged as a promising photovoltaic technology due to their impressive power conversion efficiencies (PCEs). However, the commercialization remains challenges in intrinsic defect, interfacial contacts, and long-term stability. Multi-level passivation strategies, including additive, interfacial, and morphology engineering, are introduced to address these limitations.

We first investigate multi-functional organic materials, p-aminobenzoic acid (PABA) and sodium lignosulfonate (SL), to improve perovskite crystallization, defect passivation, and energy level alignment in PSCs. Interfacial engineering is further explored through a discrete photonic ZrO₂ scaffold at the hole transport layer (HTL)/perovskite interface, which improves light absorption, crystallinity, and charge transport in p-i-n PSCs. Meanwhile, n-type organic semiconductor 3TPYMB at the perovskite/electron transport layer (ETL) interface aligns energy alignment and defect passivation, achieving PCEs of 25.76% with improved stability. Finally, a comprehensive evaluation of the morphological behavior of hole transport polymer poly(triaryl amine) (PTAA), enables blade-coated perovskite solar modules (PSMs) with a PCE of 22.6%, maintaining 90% of its initial PCE after 2,600 hours of maximum power point tracking.

This work presents multi-level passivation strategies for high-performance PSCs/PSMs, with an emphasis on large-area scaling, interfacial materials, and industrial-compatible deposition techniques to ensure long-term stability and commercialization.