Near-term implementation of projection cost reductions for photovoltaic concentrator array. Final report, 18 December 1978-7 January 1980
A chronological review of the process sequence is presented. Contained in the presentation is an explanation of each process step and its production readiness status. Some of the processes used have a long history of manufacturability and are included in the discussion to maintain process continuity. Other processing features were specifically considered in this program for incorporating into this process sequence. These include (1) an evaluation of use of thin silicon substrates (7 mil), (2) selection of a wax material capable of protecting selected surfaces of the solar cell from attack by various chemical etches during processing, (3) evaluation of ion implantation processes and annealing techniques, (4) development of a fine surface texturing process for improved absorbtion of incident illumination as well as, (5) provision for subsequent development of fine line front surface metallization patterning, (6) optimization of the metallization processes, and (7) a determination of those parameters that must be tested in order to determine the quality of a finished concentrator solar cell. Additionally, processes that have evolved during the contract period that have direct application to satisfying a near-term cost effective process sequence have been evaluated. These include plasma etching, plasma patterning, and evaluation of a lower cost nickel-copper metallization process.
- Research Organization:
- Motorola, Inc., Phoenix, AZ (USA). Solar Operations
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6721726
- Report Number(s):
- SAND-80-7073
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CONCENTRATOR SOLAR CELLS
MANUFACTURING
SILICON SOLAR CELLS
ANNEALING
ANTIREFLECTION COATINGS
COST
DIFFUSION
ELECTRIC CONTACTS
ION IMPLANTATION
PROCESSING
SOLAR CELL ARRAYS
COATINGS
DIRECT ENERGY CONVERTERS
ELECTRICAL EQUIPMENT
EQUIPMENT
HEAT TREATMENTS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
SOLAR CELLS
SOLAR EQUIPMENT
140501* - Solar Energy Conversion- Photovoltaic Conversion