Abstract
Thin-film tandem photovoltaic (PV) technology has emerged as a promising avenue to enhance power conversion efficiency beyond the radiative efficiency limit of single-junction devices. Combining a tunable wide-bandgap perovskite cell with a commercially established narrow-bandgap cadmium selenium telluride (CdSeTe) cell in a comparatively easy-to-fabricate four-terminal (4-T) arrangement is a great step in that direction. Herein, the impact of the transparent back contact and the perovskite absorber bandgap on the performance of 4-T perovskite–CdSeTe tandem solar cells is investigated. 4-T perovskite–CdSeTe tandem device architecture with ≈25% efficiency is demonstrated and a feasible pathway is shown to improve the tandem efficiency to more than 30%. The results show that the integration of CdSeTe with perovskite in 4-T tandem PV configurations represents a significant advancement toward achieving higher efficiency and low-cost tandem PVs.
| Original language | English |
|---|---|
| Article number | 2400148 |
| Journal | Solar RRL |
| Volume | 8 |
| Issue number | 21 |
| DOIs | |
| State | Published - Nov 2024 |
| Externally published | Yes |
Keywords
- cadmium telluride
- indium zinc oxide
- metal halide perovskites
- tandem solar cells
- transparent back contact