Unraveling Device Physics of Dilute‐Donor Narrow‐Bandgap Organic Solar Cells with Highly Transparent Active Layers

Making organic solar cells more transparent

31 March 2023

A theoretical analysis of organic solar cells will help to optimize their future performance.

Organic solar cells offer many advantages over conventional silicon-based ones, including being flexible and lightweight. 

While great progress has been made over the past decade, current organic solar cells perform well below their theoretical performance. One reason for this is the trade-off between achieving a high transparency and absorbing enough light to realize a high conversion efficiency. To date, most organic solar cells have low transparencies of less than 60%.

Now, to gain a better understanding of the photoelectron processes occurring in organic solar cells with highly transparent active layers, a team led by researchers from Vidyasirimedhi Institute of Science and Technology (VISTEC) in Thailand has explored the effect of varying the donor polymer concentration in these devices.

Based on this analysis, the team gives recommendations for realizing highly transparent organic solar cells.

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References

1. Advanced Materials 34, 202203796 (2022). doi: 10.1002/adma.202203796