On the road to widespread deployment of perovskite photovoltaics (PVs) technology, unconfirmed reliability poses an important technical obstacle. The overall reliability of perovskite photovoltaic PVs is directly affected by the mechanical reliability of metal halide perovskite materials, cells, and modules, but this reliability issue is largely overlooked.
Recently, Zhenghong Dai&Nitin P. Padture and others from Brown University published a review article in Nature Energy, emphasizing the importance of comprehensively addressing mechanical reliability issues.
It also emphasized the three interrelated key elements that determine the mechanical reliability of perovskite solar photovoltaic PVs, as well as their related important challenges and opportunities, and best practices: driving stress, mechanical performance, and mechanical failure.
We also discussed how to accurately measure driving stress and mechanical performance, as well as their evolution over time, and the necessity of understanding the relevant failure mechanisms and coupling effects. This will provide information for scientific methods to make perovskite photovoltaics more reliable and durable, and fully unleash their potential.
Challenges and opportunities for the mechanical reliability of metal halide perovskites and photovoltaics.
图1: 试样的几何形状和驱动应力测量。
Figure 2: Geometric shape and mechanical performance measurement of the specimen.
Figure 3: Types of mechanical failures at the material and equipment levels.
Figure 4: Coupling effects of environment, light, and electric field on deformation and fracture.
Figure 5: Module Failure Mode.
Editor: Sichuan Jinzhongde Science and Technology Research Institute
Source: Today's New Materials
