Cu(In,Ga)Se₂ Solar Cells: Device Stability Based on Chemical Flexibility

Abstract

Is “self-healing” the source of the stability of Cu(In, Ga)Se₂-based solar modules? The proven remarkable stability and radiation hardness of Cu(In,Ga)Se₂ (CIGS) solar cells stand in apparent contradiction to the fact that CIGS shows both short-range (metastable defect centers) and long-range (significant Cu migration) instabilities. The authors suggest that these instabilities may in fact be a prerequisite for CIGS's stability as they allow a degree of flexibility or “smartness” in accommodating externally imposed changes. Two self-healing cycles are proposed, in which copper species play a particularly important role.

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BibTeX RIS

BibTeX

@article{guillemoles2026cuingase₂,
  title = {{Cu(In,Ga)Se₂ Solar Cells: Device Stability Based on Chemical Flexibility}},
  author = {Jean-François Guillemoles and Uwe Rau and Leeor Kronik and Hans-Werner Schock and David Cahen},
  journal = {Advanced Materials},
  year = {2026},
  month = oct,
  doi = {10.1002/(sici)1521-4095(199908)11:11<957::aid-adma957>3.0.co;2-1},
  url = {https://hal.science/hal-05593265v1},
  note = {CC BY-SA 4.0},
}

RIS

TY  - JOUR
TI  - Cu(In,Ga)Se₂ Solar Cells: Device Stability Based on Chemical Flexibility
AU  - Jean-François Guillemoles
AU  - Uwe Rau
AU  - Leeor Kronik
AU  - Hans-Werner Schock
AU  - David Cahen
PY  - 2026
DA  - 2026/10/22
JO  - Advanced Materials
DO  - 10.1002/(sici)1521-4095(199908)11:11<957::aid-adma957>3.0.co;2-1
UR  - https://hal.science/hal-05593265v1
AB  - Is “self-healing” the source of the stability of Cu(In, Ga)Se₂-based solar modules? The proven remarkable stability and radiation hardness of Cu(In,Ga)Se₂ (CIGS) solar cells stand in apparent contradiction to the fact that CIGS shows both short-range (metastable defect centers) and long-range (significant Cu migration) instabilities. The authors suggest that these instabilities may in fact be a prerequisite for CIGS's stability as they allow a degree of flexibility or “smartness” in accommodating externally imposed changes. Two self-healing cycles are proposed, in which copper species play a particularly important role.
SN  - 0935-9648
SN  - 1521-4095
ER  -

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