Self‐assembled monolayers (SAMs) in inverted perovskite solar cells and their tandem photovoltaics application

Abstract

Self‐assembled monolayers (SAMs) employed in inverted perovskite solar cells (PSCs) have achieved groundbreaking progress in device efficiency and stability for both single‐junction and tandem configurations, owing to their distinctive and versatile ability to manipulate chemical and physical interface properties. In this regard, we present a comprehensive review of recent research advancements concerning SAMs in inverted perovskite single‐junction and tandem solar cells, where the prevailing challenges and future development prospects in the applications of SAMs are emphasized. We thoroughly examine the mechanistic roles of diverse SAMs in energy‐level regulation, interface modification, defect passivation, and charge transportation. This is achieved by understanding how interfacial molecular interactions can be finely tuned to mitigate charge recombination losses in inverted PSCs. Through this comprehensive review, we aim to provide valuable insights and references for further investigation and utilization of SAMs in inverted perovskite single‐junction and tandem solar cells.

Crystallinity Control and Strain Release in Wide-Bandgap Perovskite Film via Seed-Induced Growth for Efficient Photovoltaics

“…The PCE of single-junction PSCs utilizing perovskites as photosensitive layers have witnessed a rapid ascent, escalating from an initial 3.85% to the current 26.14% . The wide-bandgap PSC is an ideal candidate top cell for tandem solar cells, but as present suffers from large open-circuit voltage loss. − To this end, diverse methods such as additive engineering, − passivation engineering, − and component manipulation − have been employed to enhance film morphology. Nevertheless, the precise regulation of perovskite crystallization kinetics remains challenging due to the inherent randomness in nucleation and disordered diffusion growth during spontaneous solution chemical reactions …”