NDLI: Electrodeposition methods and chemistries for deposition of CIGS precursor thin films

Content Provider	IEEE Xplore Digital Library
Author	Aksu, S. Pinarbasi, M.
Copyright Year	2011
Description	Author affiliation: SoloPower Inc., San Jose, CA, USA (Aksu, S.; Pinarbasi, M.)
Abstract	We studied the electroplating methods and chemistries for the deposition of several thin films including Cu-Ga, Cu-In, Cu-In-Ga, In-Se, Ga-Se and Cu-In-Ga-Se from alkaline plating solutions containing complexing agents. Our approach utilized the full potential of complexation by formulating aqueous electroplating solutions containing complexing agents in the alkaline regime instead of the commonly reported acidic regime. We found that a blend of complexing agents could be used to provide a complete chealation of all the Cu, In and Ga ions in these plating electrolytes. No appreciable complexation occurs between Se and the complexing agents. Therefore, the Se reduction potential could be independently controlled by the amount of dissolved Se in the In-Se, Ga-Se and Cu-In-Ga-Se solutions. We established that the current density applied during deposition had a pronounced effect on the composition and morphology of the films. Intentional grading of elemental species throughout the film thicknesses could be achieved in the plated layers by changing the applied current density or voltage during the electrodeposition steps. Various precursor formation techniques were developed utilizing these graded thin films for the preparation of CIGS absorber layers.
Starting Page	000310
Ending Page	000314
File Size	650465
Page Count	5
File Format	PDF
ISBN	9781424499663
ISSN	01608371
e-ISBN	9781424499656
DOI	10.1109/PVSC.2011.6185907
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Films Current density Copper Gallium Photovoltaic cells Electric potential
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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