Design of point-focus back panel including cell, mounting, encapsulant, and interconnect

Technical Report · Sat Feb 01 00:00:00 EST 1986

OSTI ID:6103114

Kaminar, N

An attempt has been made to develop a passively-cooled, integral backplane (IBP) photovoltaic concentrator module in which silicon cells are bonded directly to the backplane of the module to eliminate the ceramic insulator and heatspreaders normally used. Over 2200 volts electrical standoff was achieved using a heat-conductive RTV and a special anodization. The module design is bent sheet metal trough with two panels of 14, 8.16-inch square Fresnel lenses mounted on the front. The cells were purchased from Applied Solar Energy Corporation (ASEC), with an active area of 0.71-inch diameter, giving a concentration ratio of 168:1. A reflective secondary was used. The average efficiency of the cells flash tested at 140 suns was 19.5%. Efficiency of the modules at 800 W/m/sup 2/ insolation, 20/sup 0/C ambient temperature, and 3 m/S windspeed was about 12.5%. Cell junction temperature was found to be about 90/sup 0/C under the above conditions.

• Research Organization: Varian Associates, Palo Alto, CA (USA). Solid State Lab.
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6103114
• Report Number(s): SAND-85-7002; ON: DE86007992
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SOLAR CELL ARRAYS
DESIGN
AMBIENT TEMPERATURE
BONDING
EFFICIENCY
ELECTRIC CONDUCTIVITY
ENCAPSULATION
FRESNEL LENS
INSOLATION
PERFORMANCE TESTING
SILICON SOLAR CELLS
DIRECT ENERGY CONVERTERS
ELECTRICAL PROPERTIES
EQUIPMENT
FABRICATION
JOINING
LENSES
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
SOLAR CELLS
SOLAR EQUIPMENT
TESTING
140501* - Solar Energy Conversion- Photovoltaic Conversion