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Title: Cascade solar cell having conductive interconnects

Direct ohmic contact between the cells in an epitaxially grown cascade solar cell is obtained by means of conductive interconnects formed through grooves etched intermittently in the upper cell. The base of the upper cell is directly connected by the conductive interconnects to the emitter of the bottom cell. The conductive interconnects preferably terminate on a ledge formed in the base of the upper cell.
Inventors:
 [1];  [2]
  1. (Menlo Park, CA)
  2. (Saratoga, CA)
Issue Date:
OSTI Identifier:
864372
Assignee:
Varian Associates, Inc. (Palo Alto, CA) OSTI
Patent Number(s):
US 4356341
Application Number:
06/243,676
Contract Number:
XP-9-8081-1
Research Org:
Solar Energy Research Institute
Country of Publication:
United States
Language:
English
Subject:
cascade; solar; cell; conductive; interconnects; direct; ohmic; contact; cells; epitaxially; grown; obtained; means; formed; grooves; etched; intermittently; upper; base; directly; connected; emitter; bottom; preferably; terminate; ledge; solar cell; ohmic contact; directly connected; epitaxially grown; conductive interconnects; cascade solar; bottom cell; conductive interconnect; /136/257/