Abstract
Under this Photovoltaic Manufacturing Technology (PVMaT) subcontract, AstroPower, Inc., developed a number of new products, including a 130-kW array built using a new panel design. Improvements in laboratory-scale cell processing resulted in a confirmed efficiency of 16.6%. A new Silicon-Film(TM) production sheet machine was built that increased throughput by 70%. AstroPower also converted threesolar cell fabrication processes from low-throughput batch processes to high-throughput, continuous, belt processes. These new processes are capable of processing sheet over 31 cm in width. Finally, a new Silicon-Film(TM) sheet machine was built that demonstrated a sheet width of 38 cm. This tool enabled AstroPower to demonstrate a wide range of solar cell sizes, many of which have generatedconsiderable market interest. The achievement of continuous process has led to lower cost per watt by reducing labor, as well as improving control, quality, and yield. Under this program, three process steps were made continuous: gettering, diffusion of emitter layer, and large-area antireflection coating.
Original language | American English |
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Number of pages | 32 |
State | Published - 1998 |
Bibliographical note
Work performed by AstroPower Inc., Newark, DelawareNREL Publication Number
- NREL/SR-520-25270
Keywords
- capacity
- EE
- energy efficiency
- manufacturing
- production
- productivity
- progress report
- solar cell arrays