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Progress in scaling up CIGS thin film solar cell production at a new Global Solar manufacturing line is reported. A new plant with high throughput tools will increase capacity from 4MWp/yr to 40MWp/yr in 2008. The processes applied to make the product and the status of the manufacturing processes during the start-up stage will be reported. Investigations of tool capability will be presented. The tool...
The impact of environmental conditions on CIGS device stability must be understood and minimized in order to gain widespread acceptance among users. The stability of CIGS-based PV coatings, cells and modules has been evaluated at Global Solar Energy (GSE) by accelerated and real-time testing. Several failure modes have been identified and addressed. New packaging designs and materials have extended...
Materials utilized in the back contact and absorber layer for CIGS-based cells are relatively expensive. A breakdown of relative material costs is presented and approaches to minimizing material costs are discussed. Investigations of the effects of reduced material amounts on production solar cell performance are detailed. Material utilization efficiencies of key components in the CIGS process are...
Production of milk from feed dry matter intakes (DMI), called dairy or feed efficiency, is not commonly measured in dairy herds as is feed conversion to weight gain in swine, beef, and poultry; however, it has relevance to conversion of purchased input to salable product and proportion of dietary nutrients excreted. The purpose of this study was to identify some readily measured factors that affect...
We examined the effect of deposition of Na on Mo-coated glasses and the Na content of the substrate glass on standard production Cu(In 1-x Ga x )Se 2 (CIGS)-based solar cells fabricated by selenization of Cu-Ga-In precursor thin films. Under optimal conditions, net Na content has a larger effect on the films than does the choice of substrate glass. Device performances...
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