NDLI: Environmental tests of metallization systems for terrestrial photovoltaic cells

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Environmental tests of metallization systems for terrestrial photovoltaic cells

Content Provider	NASA Technical Reports Server (NTRS)
Author	Alexander Jr., P.
Copyright Year	1985
Description	Seven different solar cell metallization systems were subjected to temperature cycling tests and humidity tests. Temperature cycling excursions were -50 deg C to 150 deg C per cycle. Humidity conditions were 70 deg C at 98% relative humidity. The seven metallization systems were: Ti/Ag, Ti/Pd/Ag, Ti/Pd/Cu, Ni/Cu, Pd/Ni/Solder, Cr/Pd/Ag, and thick film Ag. All metallization systems showed a slight to moderate decrease in cell efficiencies after subjection to 1000 temperature cycles. Six of the seven metallization systems also evidenced slight increases in cell efficiencies after moderate numbers of cycles, generally less than 100 cycles. The copper based systems showed the largest decrease in cell efficiencies after temperature cycling. All metallization systems showed moderate to large decreases in cell efficiencies after 123 days of humidity exposure. The copper based systems again showed the largest decrease in cell efficiencies after humidity exposure. Graphs of the environmental exposures versus cell efficiencies are presented for each metallization system, as well as environmental exposures versus fill factors or series resistance.
File Size	37633146
Page Count	80
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19860015574
Archival Resource Key	ark:/13960/t39070v1r
Language	English
Publisher Date	1985-12-31
Access Restriction	Open
Subject Keyword	Energy Production And Conversion Tables Data Performance Tests Solar Arrays Photovoltaic Cells Temperature Effects Humidity Cost Reduction Metallizing Mass Spectroscopy Graphs Charts Energy Storage Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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