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Title: Process for making photovoltaic devices and resultant product

A process and apparatus (70) for making a large area photovoltaic device (22) that is capable of generating low cost electrical power. The apparatus (70) for performing the process includes an enclosure (126) providing a controlled environment in which an oven (156) is located. At least one and preferably a plurality of deposition stations (74,76,78) provide heated vapors of semiconductor material within the oven (156) for continuous elevated temperature deposition of semiconductor material on a sheet substrate (24) including a glass sheet (26) conveyed within the oven. The sheet substrate (24) is conveyed on a roller conveyor (184) within the oven (156) and the semiconductor material whose main layer (82) is cadmium telluride is deposited on an upwardly facing surface (28) of the substrate by each deposition station from a location within the oven above the roller conveyor. A cooling station (86) rapidly cools the substrate (24) after deposition of the semiconductor material thereon to strengthen the glass sheet of the substrate.
 [1];  [2];  [3];  [4]
  1. (Toledo, OH)
  2. (Perrysburg, OH)
  3. (Bowling Green, OH)
  4. (Sylvania, OH)
Issue Date:
OSTI Identifier:
Solar Cells, Inc. (Toledo, OH) OSTI
Patent Number(s):
US 5536333
Application Number:
Contract Number:
Research Org:
Solar Energy Research Institute
Country of Publication:
United States
process; photovoltaic; devices; resultant; product; apparatus; 70; device; 22; capable; generating; cost; electrical; power; performing; enclosure; 126; providing; controlled; environment; oven; 156; located; preferably; plurality; deposition; stations; 74; 76; 78; provide; heated; vapors; semiconductor; material; continuous; elevated; temperature; sheet; substrate; 24; including; glass; 26; conveyed; roller; conveyor; 184; main; layer; 82; cadmium; telluride; deposited; upwardly; facing; surface; 28; station; location; cooling; 86; rapidly; cools; thereon; strengthen; resultant product; upwardly facing; temperature deposition; provide heat; rapidly cools; photovoltaic devices; glass sheet; electrical power; semiconductor material; elevated temperature; photovoltaic device; cadmium telluride; roller conveyor; material thereon; facing surface; controlled environment; sheet substrate; provide heated; deposition stations; cost electrical; cooling station; continuous elevated; deposition station; heated vapors; main layer; rapidly cool; /136/257/427/438/