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Theelen, M., Foster, C., Steijvers, H., Barreau, N., Vroon, Z. & Zeman, M. (2015) The impact of atmospheric species on the degradation of CIGS solar cells. Sol. Energy Mater. Sol. Cells, 141 49–56. 
Added by: Laurent Cournède (2016-03-10 18:36:41)
Type de référence: Article
DOI: 10.1016/j.solmat.2015.05.019
Numéro d'identification (ISBN etc.): 0927-0248
Clé BibTeX: Theelen2015
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Catégories: CESES
Mots-clés: CIGS solar cells, co2, Degradation, diffusion, Water, zinc-oxide layers, ZnO:Al
Créateurs: Barreau, Foster, Steijvers, Theelen, Vroon, Zeman
Collection: Sol. Energy Mater. Sol. Cells
Consultations : 7/637
Indice de consultation : 4%
Indice de popularité : 1%
CIGS solar cells were exposed to liquid water purged with the atmospheric gases carbon dioxide (CO2), oxygen (O-2), nitrogen (N-2) and air in order to investigate their chemical degradation behavior. The samples were analyzed by electrical, compositional and optical measurements before, during and after exposure in order to follow the degradation behavior of these solar cells in time. The solar cells showed a rapid decrease in conversion efficiency when exposed to water purged with a combination of CO2 and N-2 as well as to water purged with air, while their efficiency was slowly reduced in unpurged water and water purged with N-2 or O-2. Cross-section SEM showed that the exposure of samples to H2O with large concentrations of CO2 led to the dissolution of the ZnO:Al layer, likely starting from the grain boundaries. This resulted in an increased series resistance, which is likely related to an increase in resistivity of the ZnO:Al layer. It also led to a very rapid decrease of the short-circuit current of these samples. Therefore, the conversion efficiency was rapidly lost. (C) 2015 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède  
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