Big data driven perovskite solar cell stability analysis

Abstract

During the last decade lead halide perovskites have shown great potential for photovoltaic applications. However, the stability of perovskite solar cells still restricts commercialization, and lack of properly implemented unified stability testing and disseminating standards makes it difficult to compare historical stability data for evaluating promising routes towards better device stability. Here, we propose a single indicator to describe device stability that normalizes the stability results with respect to different environmental stress conditions which enables a direct comparison of different stability results. Based on this indicator and an open dataset of heterogeneous stability data of over 7000 devices, we have conducted a statistical analysis to assess the effect of different stability improvement strategies. This provides important insights for achieving more stable perovskite solar cells and we also provide suggestions for future directions in the perovskite solar cell field based on big data utilization.

Hole-transporting interlayers based on pyrazine-containing conjugated polymers for perovskite solar cells

“…Meanwhile, the PCEs of reference cells were almost the same. The often observed increase in PCEs during the aging test known as the light soaking effect 37,38 is associated with the reduction in trap-state density (trap defect passivation) in the photoactive layer. 39,40 A similar effect was also observed for this configuration of devices in our previous work.…”

A review on computational modeling of instability and degradation issues of halide perovskite photovoltaic materials

“…This makes comparing historical stability data an uphill task. To cater to this problem, Zhang et al, 161 in their recent work, have proposed a single indicator that defines stability by standardizing the stability result concerning diverse external stress situations, opening the pathway toward a direct comparison of stability results. This indicator takes into account temperature, humidity, and light intensity.…”

Improving Stability of Triple‐Cation Perovskite Solar Cells under High‐Temperature Operation

“…Without a common control, comparing across different studies or evaluating a combination of approaches is difficult and undercuts the ability to identify the most optimal approach for maximizing performance gains. [ 7 ]…”

“…Without a common control, comparing across different studies or evaluating a combination of approaches is difficult and undercuts the ability to identify the most optimal approach for maximizing performance gains. [7] To enable a comparison across additives, a baseline fabrication process and testing protocol was selected to target…”