Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 31, Issue 49, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202107129
Keywords
2D perovskite; integrated devices; organic solar cells; surface passivation; trap density
Categories
Funding
- National Natural Science Foundation of China [51673097, 21875122]
- MOST of China [2019YFA0705900]
Ask authors/readers for more resources
Integrated perovskite/organic solar cells (IPOSCs) have shown great potential in expanding light absorption range and improving photovoltaic performance. By using an ultrathin conjugated polymer (PM6) layer to passivate surface defects of perovskite film, tuning the energy level and suppressing nonradiative recombination loss, an efficient interface passivation strategy for RP perovskite in IPOSCs has been successfully demonstrated, boosting open-circuit voltage from 1.06 to 1.12 V and efficiency from 17.23% to 19.15%.
Integrated perovskite/organic solar cells (IPOSCs) have shown great potential in broadening the light absorption range and improving the photovoltaic performance. However, the severe interface charge recombination and unmatched energy levels between perovskite and organic photoactive layers hinder their performance improvement. Here, an efficient interface passivation strategy for IPOSCs based on a layered Ruddlesden-Popper (RP) perovskite and high photovoltaic performance is successfully demonstrated. It is found that an ultrathin conjugated polymer (PM6) layer could passivate the surface defects of perovskite film, tuning the energy level and suppress the nonradiative recombination loss, leading to efficient interface contact between RP perovskite and organic photoactive layers, boosting the open-circuit voltage from 1.06 to 1.12 V and the efficiency from 17.23% to 19.15%. Importantly, the optimized device shows extended photocurrent response to 930 nm with a peak intensity close to 50% from 800 to 931 nm. The results indicate that interface passivation using a functionalized polymer could be an efficient strategy to improve the photovoltaic performance of integrated devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available