Light-trapping design for thin-film silicon-perovskite tandem solar cells
Journal Article
·
· Journal of Applied Physics
- Univ. of Toronto, ON (Canada). Dept. of Physics; University of Toronto
- Univ. of Toronto, ON (Canada). Dept. of Physics
Using finite-difference time-domain simulations, we investigate the optical properties of tandem silicon/perovskite solar cells with a photonic crystal architecture, consisting of a square-lattice array of inverted pyramids with a center-to-center spacing of 2.5 μm. Here, we demonstrate that near-perfect light-trapping and absorption can be achieved over the 300–1100 nm wavelength range with this architecture, using less than 10 μm (equivalent bulk thickness) of crystalline silicon. Using a one-diode model, we obtain projected efficiencies of over 30% for the two-terminal tandem cell under a current-matching condition, well beyond the current record for single-junction silicon solar cells. Lastly, the architecture is amenable to mass fabrication through wet-etching and uses a fraction of the silicon of traditional designs, making it an attractive alternative to other silicon-perovskite tandem designs.
- Research Organization:
- Rensselaer Polytechnic Inst., Troy, NY (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FG02-06ER46347
- OSTI ID:
- 1467885
- Alternate ID(s):
- OSTI ID: 1324362
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 120; ISSN JAPIAU; ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:22489519