Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

Surface pretreatment of metallic substrates

Commercially available metal substrates such as ferritic Cr steel and titanium have been smoothed by:
- Electrochemical polishing (INASMET)
- Mechanical polishing (INASMET)
- The deposition of a levelling SiOx layer (CIEMAT).

Mirror like surfaces were obtained by a mechanical polishing procedure. The differently treated foils have been analysed and assessed by fabrication of CIGS devices (IPE, ZSW) and application of different measurements (SEM, AFM, profilometry, optical microscopy, SIMS, I/V-curve).

Various dielectric (e.g. SiOx) and conductive (e.g. Cr) layers were deposited and evaluated as diffusion barriers against the diffusion of detrimental elements from the steel substrate into the CIGS absorber. A specific selective CIGS pollution procedure has been successfully applied at the IPE to identify detrimental elements. A chemical treatment of the CIGS absorber was applied to remove residual contaminants accumulating at the CIGS surface.

Informations connexes

Reported by

CIEMAT, Departamento de Energias Renovables
Avenida Complutense 22
28040 MADRID
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