A Perspective on Durability of Perovskite Tandem Modules

Perovskite-based tandem solar technologies hold immense promise as commercial products but must first meet stringent market requirements: durable at high efficiency. In this talk, I will discuss CubicPV’s approach to developing a 4T perovskite/Si tandem product. I will also discuss our focus on durability as perovskite/Si tandem modules must withstand diverse environmental stresses such as light (including UV), heat, bias, water, and oxygen to achieve long-term reliability. While challenges related to water and oxygen can be mitigated through improved packaging designs, ensuring durability against light, heat, and bias necessitates careful material and device stack design. This presentation will delve into the critical durability challenges facing perovskite tandem technologies and propose potential pathways to overcome these obstacles effectively.