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Nanostructure-enabled current matching improvement in 3D layer-engineered all-perovskite tandem solar cells

Author

Listed:
  • Haji Zeynali Biyoki, Ali Akbar
  • Masoudi, Mehrshad
  • Shahrostami, Maryam
  • Maleki, Javad

Abstract

This research proposes a novel all-perovskite tandem solar cell structure, investigated using finite element method simulations, and incorporating V2O5-CIGS core-shell structures in the bottom subcell to significantly improve performance and eliminate current mismatch between subcells. The reference structure initially had a Jsc of 14.78 mA/cm2, a Voc of 2.25 V, a PCE of 28.99 %, and a FF of 0.87. To enhance the low Voc of the bottom subcell, V2O5 nanorods were added for improved hole transport, and CeO2 was selected as the best electron transport layer, increasing Voc to 2.59 V. The resulting decrease in Jsc was compensated by introducing a V2O5-CIGS core-shell structure, raising bottom subcell Jsc from 13.03 to 14.77 mA/cm2. Further active layer re-optimization yielded a final Jsc of 16.09 mA/cm2, with the current in both the top and bottom subcells perfectly matched. The optimized series-connected device reached Jsc of 16.09 mA/cm2, Voc of 2.63 V, PCE of 37.20 %, and FF of 0.87. A parallel-connected configuration was also studied, showing higher Jsc but lower Voc and PCE. These integrated strategies demonstrate the effectiveness of core-shell nanostructures and layer optimization in achieving ideal current matching, higher efficiency, and broader solar spectrum utilization, advancing high-performance all-perovskite tandem solar cells.

Suggested Citation

  • Haji Zeynali Biyoki, Ali Akbar & Masoudi, Mehrshad & Shahrostami, Maryam & Maleki, Javad, 2026. "Nanostructure-enabled current matching improvement in 3D layer-engineered all-perovskite tandem solar cells," Renewable Energy, Elsevier, vol. 261(C).
    • Handle: RePEc:eee:renene:v:261:y:2026:i:c:s0960148126000455
    DOI: 10.1016/j.renene.2026.125220
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