Accession Number : AD0822428

Title :   HIGH VOLTAGE SOLAR CELL ARRAY SEGMENT.

Descriptive Note : Interim progress rept. no. 7, 1 Jul-30 Sep 67,

Corporate Author : WESTINGHOUSE ELECTRIC CORP YOUNGWOOD PA SEMICONDUCTOR DIV

Personal Author(s) : Nowalk, T. P.

Report Date : 30 SEP 1967

Pagination or Media Count : 32

Abstract : This report covers the progress on the High Voltage Solar Cell Array Segment. Processing of twelve inch long silicon web was performed. A number of modifications related to the photomasking and isolation diffusion steps were introduced which made this possible. The longest cell tested consisted of a 43-unit contiguous array which yielded VOC = 19.7 volts, ISC = 5.5 ma and PM = 71.4 mw under 100 sq cm tungsten lights. Efficiency in the uncoated state was 3.9% -- equivalent to an estimated >5% coated cell. Thus the program concept of the high voltage solar cell has been extended to physical lengths up to twelve inches, and devices have been tested in arrays which exceed seven inches in length. A power conditioning network capable of converting 50 vdc to 1000 vdc with a 10 watt power capability has been developed using voltage multiplier techniques. System efficiency at full load is approximately 75%. Better than 5% voltage regulation is obtained for loads ranging from 10% of full load to full load. A rating of 46 watts/lb is obtained with prototype breadboard circuit. (Author)

Descriptors :   (*SOLAR PANELS, SILICON), (*SOLAR CELLS, SILICON), VOLTAGE REGULATORS, PROCESSING, MASKING, DIFFUSION, VOLTAGE, EPITAXIAL GROWTH, DOPING, DENDRITIC STRUCTURE, OXIDATION, POWER AMPLIFIERS, PULSE AMPLIFIERS.

Subject Categories : Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE