Interplay between temperature and bandgap energies on the outdoor performance of perovskite/silicon tandem solar cells
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2021-03-14
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ArticleAuthors
Aydin, Erkan
Allen, Thomas
de Bastiani, Michele
Xu, Lujia

Ávila, Jorge

Salvador, Michael
Van Kerschaver, Emmanuel
De Wolf, Stefaan

KAUST Department
KAUST Solar Center (KSC)Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant Number
OSR-CARF URF/1/3079-33-01Date
2020-09-14Online Publication Date
2020-09-14Print Publication Date
2020-11Embargo End Date
2021-03-14Submitted Date
2020-02-06Permanent link to this record
http://hdl.handle.net/10754/665149
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Show full item recordAbstract
Perovskite/silicon tandem solar cells promise power conversion efficiencies beyond the Shockley–Queisser limit of single-junction devices; however, their actual outdoor performance is yet to be investigated. Here we fabricate 25% efficient two-terminal monolithic perovskite/silicon tandem solar cells and test them outdoors in a hot and sunny climate. We find that the temperature dependence of both the silicon and perovskite bandgaps—which follow opposing trends—shifts the devices away from current matching for two-terminal tandems that are optimized at standard test conditions. Consequently, we argue that the optimal perovskite bandgap energy at standard test conditions is <1.68 eV for field performance at operational temperatures greater than 55 °C, which is lower compared with earlier findings. This implies that bromide-lean perovskites with narrower bandgaps at standard test conditions—and therefore better phase stability—hold great promise for the commercialization of perovskite/silicon tandem solar cells.Citation
Aydin, E., Allen, T. G., De Bastiani, M., Xu, L., Ávila, J., Salvador, M., … De Wolf, S. (2020). Interplay between temperature and bandgap energies on the outdoor performance of perovskite/silicon tandem solar cells. Nature Energy. doi:10.1038/s41560-020-00687-4Sponsors
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) under award nos. OSR-CARF URF/1/3079-33-01 and IED OSR-2019-4208. The authors thank TUV Rheinland Group for providing solar spectra from their outdoor test field on the KAUST campus. J.Á. thanks the Spanish Ministry of Education, Culture and Sport for his pre-doctoral grant (FPU14/04466).Publisher
Springer Science and Business Media LLCJournal
Nature EnergyAdditional Links
http://www.nature.com/articles/s41560-020-00687-4ae974a485f413a2113503eed53cd6c53
10.1038/s41560-020-00687-4