Development of a large area space solar cell assembly. Final Report, Jul. 1981 - Mar. 1982

Technical Report · Sat May 01 04:00:00 EDT 1982

OSTI ID:6071840

Spitzer, M B

The development of a large area high efficiency solar cell assembly is described. The assembly consists of an ion implanted silicon solar cell and glass cover. The important attributes of fabrication are the use of a back surface field which is compatible with a back surface reflector, and integration of coverglass application and cell fabrications. Cell development experiments concerned optimization of ion implantation processing of 2 ohm-cm boron-doped silicon. Process parameters were selected based on these experiments and cells with area of 34.3 sq cm wre fabricated. The average AMO efficiency of the twenty-five best cells was 13.9% and the best cell had an efficiency of 14.4%. An important innovation in cell encapsulation was also developed. In this technique, the coverglass is applied before the cell is sawed to final size. The coverglass and cell are then sawed as a unit. In this way, the cost of the coverglass is reduced, since the tolerance on glass size is relaxed, and costly coverglass/cell alignment procedures are eliminated. Adhesive investigated were EVA, FEP-Teflon sheet and DC 93-500. Details of processing and results are reported.

• Research Organization: Spire Corp., Bedford, MA (USA)
• OSTI ID: 6071840
• Report Number(s): N-8230706; NASA-CR-167929
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
ANALOG SYSTEMS
ARSENIC
BORON
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELEMENTS
EQUIPMENT
FABRICATION
FUNCTIONAL MODELS
INSOLATION
ION IMPLANTATION
NONMETALS
OPTIMIZATION
PHOSPHORUS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
SEMIMETALS
SILICON
SILICON SOLAR CELLS
SIMULATORS
SOLAR CELLS
SOLAR EQUIPMENT
SOLAR SIMULATORS
STRESS ANALYSIS