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Book Phase 2 automated array assembly task IV low cost silicon solar array project

Download or read book Phase 2 automated array assembly task IV low cost silicon solar array project written by Lockheed Missiles and Space Company and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Phase 2 automated array assembly task IV low cost silicon solar array project

Download or read book Phase 2 automated array assembly task IV low cost silicon solar array project written by Lockheed Missiles and Space Company and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Phase 2 Automated Array Assembly Task IV Low Cost Silicon Solar Array Project Prepared by Lockheed Missiles Space Company Inc

Download or read book Phase 2 Automated Array Assembly Task IV Low Cost Silicon Solar Array Project Prepared by Lockheed Missiles Space Company Inc written by Lockheed Missiles and Space Company and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Array Automated Assembly Task

Download or read book Array Automated Assembly Task written by Sang S. Rhee and published by . This book was released on 1978 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Phase 2 of the array automated assembly task for the low cost solar array project

Download or read book Phase 2 of the array automated assembly task for the low cost solar array project written by Westinghouse Electric Corporation. Research & Development Center and published by . This book was released on 1978 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Array Automated Assembly Task

Download or read book Array Automated Assembly Task written by Gregory T. Jones and published by . This book was released on 1979 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Phase 2 Automated Array Assembly Task IV Low cost Silicon Solar Array Project Quarterly Report

Download or read book Phase 2 Automated Array Assembly Task IV Low cost Silicon Solar Array Project Quarterly Report written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional 3-inch diameter reference cells were fabricated using conventional processes consisting of: POCL3 diffusion, electroless nickel plating, solder dipping, and evaporated SiO AR coating. Both flash and texture-etched surface wafers were used. The flash-etched cells yielded output efficiencies of 10.3%, whereas the texture-etched cells were considerably lower. Other flash and texture-etched cells were processed by 31P ion implantation 25 keV and 3 x 1015 ions/cm2, thermal annealing, and electroless nickel plating, resulting in 7% AM1 efficiencies. Problems were experienced in the nickel plating process which contributed to poor ohmic contact adherence and the resulting low efficiencies. Laser annealing was performed by Quantronix with an Nd:YAG laser on our texture-etched, flash-etched, and polished ion implanted wafers. A programmed X-Y positioning stage was used for precise traversing across the wafer surface. Best results of 7.3% AM1 efficiencies were attained on .5 x .5 cm size cells with polished surfaces. These cells had evaporated Ti/Ag contacts but not sintered nor AR coated. I/sub sc/ of these small cells was 5 ma. This represents a 27 ma/cm2 output based on active area only, and compares with 32 ma/cm2 for a conventionally processed cell of 11% AM1 efficiency. A cost analysis was prepared which reflects potential cost savings of laser annealing over thermal annealing in excess of $35 million. This savings is due to a projected cell efficiency improvement of 2%, resulting in reduced quantities of cells for the 500 megawatt capability. Spraying of tantalum solutions was performed on 2 x 4 cm space cells using the Zicon Autocoater. Cells were electrically tested at the outset in the as-received condition with SiO AR coating.

Book Phase 2 Automated Array Assembly Task IV Low Cost Silicon Solar Array Project Quarterly Report No 1 November 1 1977 January 28 1978

Download or read book Phase 2 Automated Array Assembly Task IV Low Cost Silicon Solar Array Project Quarterly Report No 1 November 1 1977 January 28 1978 written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Technical and economic evaluations are discussed on the selected process sequence consisting of: starting material CZ silicon wafers, as sawn, 3 inch diameter; texture etch with NaOH; ion implantation of phosphorus for junction formation; laser annealing; screen printing of ohmic contacts; spray-on AR coating; module assembly. Process verifications have commenced on the texturizing and ion implanting processes. Argon, ruby and YAG lasers were determined to be best suited for laser annealing having wavelengths of .5 .mu.m, .694 .mu.m and 1.06 .mu.m, respectively. Arrangements are being made to utilize appropriate lasers.

Book Array Automated Assembly Task Low Cost Silicon Solar Array Project Phase 2

Download or read book Array Automated Assembly Task Low Cost Silicon Solar Array Project Phase 2 written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: