US2012017988A1PendingUtilityA1

Pyramidal three-dimensional thin-film solar cells

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Assignee: MOSLEHI MEHRDAD MPriority: Oct 9, 2006Filed: Jul 21, 2011Published: Jan 26, 2012
Est. expiryOct 9, 2026(~0.2 yrs left)· nominal 20-yr term from priority
Inventors:Mehrdad M. Moslehi
H10F 19/80H10F 77/488H10F 77/211H10F 77/147H10F 77/48H10F 71/1395H10F 19/902H10F 19/31H10F 99/00Y02B10/10Y02E10/52
62
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Claims

Abstract

A pyramidal three-dimensional thin-film solar cell, comprising a pyramidal three-dimensional thin-film solar cell substrate comprising a plurality of pyramid-shaped unit cells with emitter junction regions and doped base regions, emitter metallization regions and base metallization regions. Optionally, the pyramidal three-dimensional thin-film solar cell may be mounted on a rear mirror for improved light trapping and conversion efficiency.

Claims

exact text as granted — not AI-modified
1 . A pyramidal three-dimensional thin-film solar cell, comprising:
 a pyramidal three-dimensional thin-film solar cell substrate comprising emitter junction regions and doped base regions;   emitter metallization regions; and   base metallization regions,   wherein said pyramidal three-dimensional thin-film solar cell substrate comprises a plurality of pyramid-shaped unit cells.   
     
     
         2 . The pyramidal three-dimensional thin-film solar cell of  claim 1 , wherein said emitter junction regions and doped base regions comprise selective emitter junction regions and selective doped base regions. 
     
     
         3 . The pyramidal three-dimensional thin-film solar cell of  claim 1 , wherein said emitter junction regions comprise self-aligned emitter junction regions, said doped base regions comprise self-aligned doped base regions, said emitter metallization regions comprise self-aligned emitter metallization regions, and said base metallization regions comprise self-aligned base metallization regions. 
     
     
         4 . The pyramidal three-dimensional thin-film solar cell of  claim 1 , wherein said pyramidal three-dimensional thin-film solar cell substrate comprises a silicon substrate. 
     
     
         5 . The pyramidal three-dimensional thin-film solar cell of  claim 4 , wherein said silicon substrate comprises a crystalline silicon substrate. 
     
     
         6 . The pyramidal three-dimensional thin-film solar cell of  claim 1 , wherein said pyramidal three-dimensional thin-film solar cell substrate comprises a pyramidal three-dimensional thin-film solar cell substrate with a polygon-pyramid design. 
     
     
         7 . The pyramidal three-dimensional thin-film solar cell of  claim 7 , wherein said polygon-pyramid design comprises a hexagonal-pyramid design. 
     
     
         8 . The pyramidal three-dimensional thin-film solar cell of  claim 7 , wherein said polygon-pyramid design comprises a square-pyramid design. 
     
     
         9 . The pyramidal three-dimensional thin-film solar cell of  claim 7 , wherein said polygon-pyramid design comprises a triangular-pyramid design. 
     
     
         10 . The pyramidal three-dimensional thin-film solar cell of  claim 7 , wherein said polygon-pyramid design comprises an orthogonal V-groove design. 
     
     
         11 . The pyramidal three-dimensional thin-film solar cell of  claim 1 , further comprising a rear mirror. 
     
     
         12 . The pyramidal three-dimensional thin-film solar cell of  claim 11 , wherein said rear mirror comprises an integrated rear mirror. 
     
     
         13 . The pyramidal three-dimensional thin-film solar cell of  claim 11 , wherein said rear mirror comprises a detached rear mirror. 
     
     
         14 . A pyramidal three-dimensional thin-film solar cell, comprising a pyramidal three-dimensional thin-film solar cell substrate, wherein said pyramidal three-dimensional thin-film solar cell substrate comprises a plurality of pyramid-shaped unit cells. 
     
     
         15 . The pyramidal three-dimensional thin-film solar cell of  claim 14 , further comprising a rear mirror. 
     
     
         16 . The pyramidal three-dimensional thin-film solar cell of  claim 15 , wherein said rear mirror comprises an integrated rear mirror. 
     
     
         17 . The pyramidal three-dimensional thin-film solar cell of  claim 15 , wherein said rear mirror comprises a detached rear mirror. 
     
     
         18 . A pyramidal three-dimensional thin-film solar cell, comprising a pyramidal three-dimensional thin-film solar cell substrate, wherein said pyramidal three-dimensional thin-film solar cell substrate comprises a plurality of unit cells with pyramid-shaped cavities. 
     
     
         19 . The three-dimensional thin-film solar cell of  claim 18 , wherein said pyramid-shaped cavities are surrounded by thin semiconductor sidewalls. 
     
     
         20 . The pyramidal three-dimensional thin-film solar cell of  claim 18 , further comprising a rear mirror.

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