Abstract
In this work, we introduce P3HT (poly(3-hexylthiophene-2,5-diyl)) as an efficient hole transport material (HTM) for lead-free Cs3Sb2I9 perovskite-inspired solar cells. The P3HT doubles the power conversion efficiency (PCE) of the solar cells (PCE = 2.5% for the champion device) by improving all of the figures of merit: the fill factor, open-circuit voltage, and the short-circuit current. The maximum power point tracked efficiency was 2.0%, which is the highest so far reported for this type of solar absorber. The discovery of an efficient HTM for Cs3Sb2I9 is an important step in advancing safer lead-free perovskite-inspired solar cells.
Original language | English |
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Pages (from-to) | 217-222 |
Number of pages | 6 |
Journal | Sustainable Energy & Fuels |
Volume | 6 |
Issue number | 1 |
Early online date | 1 Dec 2021 |
DOIs | |
Publication status | Published - 2022 |
Publication type | A1 Journal article-refereed |
Publication forum classification
- Publication forum level 1