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| Composition of the triple-junction solar cell: two thin-film perovskite cells (orange and red labels) and one silicon cell (dark gray). The materials for each layer are indicated on the right side. The arrows on the scanning electron microscopy image indicate the different colors of light absorbed in the different solar cells constituting the triple-junction. Credit: 2026 EPFL PV-Lab CC BY SA. |
| © 2026 SPIE Europe |
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