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Investigation of critical surface degradation effects on coatings and solar cells developed in Germany (S1002)Various coatings developed in the FRG (i.e., second-surface mirrors with interference filters with and without conductive layers, conductive layers on solar-cell covers, and selective absorber coatings) have been qualified by accelerated tests under simulated space environment conditions. Experiments with coatings and solar cells have shown, however, that the thermo-optical behavior can differ considerably when performed on the ground and in space because of the great difficulty in simulating the space environment realistically. The objective of this experiment is to qualify these coatings under realistic space environment conditions. In addition, the experiment will provide design criteria, techniques, and test methods to insure control of the combined space and spacecraft environment effects, such as contamination, electrical conductance, and optical degradation, on the coatings. Data to be measured include the temperature of the samples, the electrical resistance of the conductive layers of the samples, the short circuit current of the solar-cell modules, and the deposition of contaminants on the samples (using quartz crystal microbalances (QCM's)).
Document ID
19840016590
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Preuss, L.
(Messerschmitt-Boelkow-Blohm G.m.b.H. Munich, Germany)
Date Acquired
August 12, 2013
Publication Date
February 1, 1984
Publication Information
Publication: NASA. Langley Research Center Long Duration Exposure Facility (LDEF)
Subject Category
Energy Production And Conversion
Accession Number
84N24658
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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