Exciton fission enhanced silicon solar cell
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1-s2.0-S2542435125001461-main.pdf
Description
Published version
Size
2.04 MB
Format
Adobe PDF
Checksum (MD5)
1f1bd32b1000ad9b26e96e753394c37a
Author(s)
Nagaya, Narumi
Lee, Kangmin
Perkinson, Collin F
Li, Aaron
Lee, Youri
Zhong, Xinjue
Lee, Sujin
Weisburn, Leah P
Wang, Janet Z
Baikie, Tomi K
Date Issued
July 16, 2025
Journal
Joule
Publisher
Elsevier BV
Citation
Nagaya, Narumi, Lee, Kangmin, Perkinson, Collin F, Li, Aaron, Lee, Youri et al. 2025. "Exciton fission enhanced silicon solar cell." Joule, 9 (7).
Version
Final published version
Abstract
While silicon solar cells dominate global photovoltaic energy production, their continued improvement is hindered by the single-junction limit. One potential solution is to use molecular singlet exciton fission to generate two electrons from each absorbed high-energy photon. We demonstrate that the long-standing challenge of coupling molecular excited states to silicon solar cells can be overcome using sequential charge transfer. Combining zinc phthalocyanine, aluminum oxide, and a shallow junction crystalline silicon microwire solar cell, the peak charge generation efficiency per photon absorbed in tetracene is (138% ± 6%), comfortably surpassing the quantum efficiency limit for conventional silicon solar cells and establishing a new, scalable approach to low-cost, high-efficiency photovoltaics.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Chemistry
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Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
10.1016/j.joule.2025.101965
