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Cu(In,Ga)Se 2 Solar Cells: Device Stability Based on Chemical Flexibility
Author(s) -
Guillemoles JeanFrançois,
Rau Uwe,
Kronik Leeor,
Schock HansWerner,
Cahen David
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199908)11:11<957::aid-adma957>3.0.co;2-1
Subject(s) - materials science , flexibility (engineering) , stability (learning theory) , nanotechnology , chemical stability , engineering physics , chemical engineering , computer science , engineering , statistics , mathematics , machine learning
Is “self‐healing” the source of the stability of Cu(In, Ga)Se 2 ‐based solar modules? The proven remarkable stability and radiation hardness of Cu(In,Ga)Se 2 (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.