Silicon Materials Task of the Low Cost Solar Array Project (part 2). Third quarterly report, 1 April 1976--30 June 1976

Technical Report · Thu Jan 01 04:00:00 EST 1976

DOI:https://doi.org/10.2172/7267995· OSTI ID:7267995

Hopkins, R. H.; Davis, J. R.; Rai-Choudhury, P.; Blais, P. D.; McHugh, J. P.; McCormick, J. R.

The objective of this program is to develop and define purity requirements for solar grade silicon by exploring the effects of metal impurities on the performance of terrestrial silicon solar cells. During this quarter the growth of all first, second, and nearly all third generation ingots was completed and the growth of fourth generation ingots was initiated. Several boron-doped silicon dendritic web baseline samples were grown as well as one web doped with chromium. Chemical analysis of the ingots is proceeding on schedule, though, as expected, difficulties in assessing the impurity levels of lightly-doped ingots have developed. Lifetime measurements were completed for all 38 ingots grown to date. (WDM)

• Research Organization: Westinghouse Research Labs., Pittsburgh, Pa. (USA)
• DOE Contract Number: NAS-7-100-954331
• OSTI ID: 7267995
• Report Number(s): ERDA/JPL/954331-76/3
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
BORON
CHROMIUM
CRYSTAL GROWTH
DIRECT ENERGY CONVERTERS
ELEMENTS
FABRICATION
IMPURITIES
METALS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
SEMIMETALS
SILICON
SILICON SOLAR CELLS
SOLAR CELLS
TRANSITION ELEMENTS