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Title: High voltage photovoltaic power converter

An array of independently connected photovoltaic cells on a semi-insulating substrate contains reflective coatings between the cells to enhance efficiency. A uniform, flat top laser beam profile is illuminated upon the array to produce electrical current having high voltage. An essentially wireless system includes a laser energy source being fed through optic fiber and cast upon the photovoltaic cell array to prevent stray electrical signals prior to use of the current from the array. Direct bandgap, single crystal semiconductor materials, such as GaAs, are commonly used in the array. Useful applications of the system include locations where high voltages are provided to confined spaces such as in explosive detonation, accelerators, photo cathodes and medical appliances.
Authors:
 [1] ;  [2] ;  [3] ;  [3]
  1. (Arvada, CO)
  2. (Cambridge, MA)
  3. (Livermore, CA)
Publication Date:
OSTI Identifier:
873885
Report Number(s):
US 6265653
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Country of Publication:
United States
Language:
English
Subject:
voltage; photovoltaic; power; converter; array; independently; connected; photovoltaic; cells; semi-insulating; substrate; contains; reflective; coatings; cells; enhance; efficiency; uniform; flat; top; laser; beam; profile; illuminated; array; produce; electrical; current; voltage; essentially; wireless; laser; energy; source; fed; optic; fiber; cast; photovoltaic; cell; array; prevent; stray; electrical; signals; prior; current; array; direct; bandgap; single; crystal; semiconductor; materials; gaas; commonly; array; useful; applications; locations; voltages; provided; confined; spaces; explosive; detonation; accelerators; photo; cathodes; medical; appliances; reflective coating; photovoltaic power; confined space; reflective coatings; optic fiber; photovoltaic cells; electrical signals; semiconductor materials; electrical signal; laser beam; semiconductor material; energy source; single crystal; electrical current; laser energy; photovoltaic cell; photovoltaic cell; produce electrical; cell array; beam profile; useful application; insulating substrate; power converter; semi-insulating substrate; direct bandgap; enhance efficiency; independently connected; substrate contain /136/250/257/322/323/