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March 21, 2026Energy & Environmental Science7 citations

Intrinsic defect compensation in the space charge region enables cadmium-free kesterite solar cells to achieve 13.9% certified efficiency

YZYonggang ZhaoSCShuo ChenJSJiangjian Shi

Key Points

  • The aim is to explore how intrinsic defect compensation maximizes the efficiency of cadmium-free kesterite solar cells.
  • Utilized ventilated-air junction heat treatment (JHT)
  • Promoted Zn diffusion across the CZTSSe/ZTO interface
  • Assessed band alignment and defect compensation
  • Achieved a certified power conversion efficiency (PCE) of 13.90%
  • Demonstrated improved band alignment due to Zn diffusion
  • Showed effective intrinsic defect compensation enhancing solar cell performance

Abstract

Ventilated-air junction heat treatment (JHT) promotes Zn diffusion across the CZTSSe/ZTO interface, leading to intrinsic defect compensation and optimized band alignment, thereby enabling a certified PCE of 13.90% in Cd-free CZTSSe solar cells.

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Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/69be36d46e48c4981c675f99https://doi.org/10.1039/d6ee00550k
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

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  5. 5Highly Efficient Cadmium‐Free Kesterite Solar Cell With the Lowest <i>V</i> <sub>OC,def</sub> Enabled by Na‐Ion‐Assisted Defect Passivation2026 · 5 citations