Abstract
To maximize the power conversion efficiency (PCE) and stability of perovskite/silicon tandem solar cells (TSCs), high-performance and stable perovskite top cells with wide-bandgaps are required. A 2D/3D wide-bandgap perovskite with a bandgap of 1.69 eV using 1H-1,2,4-triazole-1-carboximidamide (1-TzFACl) as a spacer is developed. The 2D/3D wide-bandgap perovskite shows better film quality, enhanced crystallinity, suppressed nonradiative recombination, and significantly improved phase stability. Its initial PCE (21.58%) remains above 87% after 1560 h of continuous illumination due to the insertion of Cl− in the perovskite lattice. A monolithic two-terminal perovskite/silicon TSC achieves a PCE of 25.66% with high light stability. This work provides an ingenious strategy to restrain the phase segregation in wide-bandgap perovskites, leading to effective and stable perovskite/silicon TSCs. © 2024 Wiley-VCH GmbH. © 2024 Wiley-VCH GmbH
| Original language | English |
|---|---|
| Article number | 2400189 |
| Journal | Solar RRL |
| Volume | 8 |
| Issue number | 11 |
| Online published | 7 Apr 2024 |
| DOIs | |
| Publication status | Published - Jun 2024 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Research Keywords
- 2D/3D perovskite
- defect passivation
- perovskite/silicon tandem solar cells
- stability
- wide-bandgap perovskite
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