Dr Hairen Tan: Highly efficient perovskite based tandem solar cells

Here I will talk about our recent progress in the design and fabrication of highly efficient perovskite based tandem solar cells, including perovskite/c-Si and perovskite-perovskite monolithic tandems. I will discuss two crucial issues on the path to efficient and stable perovskite solar cells: (1) defect Engineering to reduce carrier trapping in perovskite absorber and (2) contact passivation at interfaces to reduce recombination loss [1-3]. These methods enable us realizing perovskite/perovskite tandem solar cells with efficiency approaching best crystalline silicon solar cells [4].

References

1.           H. Tan, E. H. Sargent* et al. Science 355, 722-726 (2017).

2.           F. Tan, H. Tan*, E. H. Sargent* et al. Advanced Materials 31, 1807435 (2019)

3.           H. Tan*, E. H. Sargent* et al. Nature Communications 9, 3100 (2018)

4.           R. Lin, H. Tan* et al. Nature Energy. Just Accepted