High-Performance Tandem Organic Solar Cells Using HSolar as the Interconnecting Layer
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ArticleAuthors
Ho, Carr Hoi Yi
Kim, Taesoo
Xiong, Yuan
Firdaus, Yuliar

Yi, Xueping
Dong, Qi
Rech, Jeromy J.
Gadisa, Abay
Booth, Ronald
O'Connor, Brendan T.
Amassian, Aram
Ade, Harald
You, Wei
Anthopoulos, Thomas D.

So, Franky

KAUST Department
Physical Science and Engineering (PSE) DivisionMaterial Science and Engineering Program
KAUST Solar Center (KSC)
Date
2020-05-12Online Publication Date
2020-05-12Print Publication Date
2020-07Embargo End Date
2021-05-13Submitted Date
2020-03-03Permanent link to this record
http://hdl.handle.net/10754/662892
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Show full item recordAbstract
Tandem structure provides a practical way to realize high efficiency organic photovoltaic cells, it can be used to extend the wavelength coverage for light harvesting. The interconnecting layer (ICL) between subcells plays a critical role in the reproducibility and performance of tandem solar cells, yet the processability of the ICL has been a challenge. In this work the fabrication of highly reproducible and efficient tandem solar cells by employing a commercially available material, PEDOT:PSS HTL Solar (HSolar), as the hole transporting material used for the ICL is reported. Comparing with the conventional PEDOT:PSS Al 4083 (c-PEDOT), HSolar offers a better wettability on the underlying nonfullerene photoactive layers, resulting in better charge extraction properties of the ICL. When FTAZ:IT-M and PTB7-Th:IEICO-4F are used as the subcells, a power conversion efficiency (PCE) of 14.7% is achieved in the tandem solar cell. To validate the processability of these tandem solar cells, three other research groups have successfully fabricated tandem devices using the same recipe and the highest PCE obtained is 16.1%. With further development of donor polymers and device optimization, the device simulation results show that a PCE > 22% can be realized in tandem cells in the near future.Citation
Ho, C. H. Y., Kim, T., Xiong, Y., Firdaus, Y., Yi, X., Dong, Q., … So, F. (2020). High-Performance Tandem Organic Solar Cells Using HSolar as the Interconnecting Layer. Advanced Energy Materials, 2000823. doi:10.1002/aenm.202000823Sponsors
This work was supported by the Office of Naval Research Grant N00014-17-1-2242, National Science Foundation Award CBET-1639429, and NextGen Nano.Publisher
WileyJournal
Advanced Energy MaterialsAdditional Links
https://onlinelibrary.wiley.com/doi/abs/10.1002/aenm.202000823ae974a485f413a2113503eed53cd6c53
10.1002/aenm.202000823