Title :
Thermally conductive alumina/organic composites for photovoltaic concentrator cell isolation
Author :
Beavis, L.C. ; Panitz, J.K.G. ; Sharp, D.J.
Author_Institution :
Sandia Nat. Lab. Albuquerque, NM, USA
Abstract :
Styrene-acrylate copolymer coatings were deposited onto anodized aluminum substrates and the processing characteristics correlated with coating properties. The aluminum (5005-H34) alloy trough or housing module was anodized in a chilled (0-5 degrees C) 18% aqueous sulfuric acid bath. The entire housing was anodized to 50 V at a current density of 1.4 A/dm2. A styrene-acrylate copolymer electrophoretic bath was prepared, and the bottom of the inside of the module was electrocoated at 0.5 mA/cm2 for 120 s. Breakdown measurements were obtained by placing a probe on the coating composite and gradually increasing the voltage until a current in excess of 10 mA occurred. The results indicate that thin, relatively high thermal conductivity, high-voltage breakdown dielectrics can be formed using this economical process.
Keywords :
electric breakdown of solids; organic insulating materials; polymers; solar energy concentrators; 10 mA; 50 V; anodised Al substrates; breakdown measurements; chilled aqueous H2SO4; electrophoretic bath; high thermal conductivity; high-voltage breakdown dielectrics; photovoltaic concentrator cell isolation; styrene-acrylate copolymer coatings; Aluminum alloys; Breakdown voltage; Coatings; Current density; Current measurement; Dielectric measurements; Photovoltaic systems; Probes; Solar power generation; Thermal conductivity;
Conference_Titel :
Photovoltaic Specialists Conference, 1988., Conference Record of the Twentieth IEEE
Conference_Location :
Las Vegas, NV, USA
DOI :
10.1109/PVSC.1988.105923
