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Title: Concentrator photovoltaic module architectures with capabilities for capture and conversion of full global solar radiation

Emerging classes ofconcentrator photovoltaic (CPV) modules reach efficiencies that are far greater than those of even the highest performance flat-plate PV technologies, with architectures that have the potential to provide the lowest cost of energy in locations with high direct normal irradiance (DNI). A disadvantage is their inability to effectively use diffuse sunlight, thereby constraining widespread geographic deployment and limiting performance even under the most favorable DNI conditions. This study introduces a module design that integrates capabilities in flat-plate PV directly with the most sophisticated CPV technologies, for capture of both direct and diffuse sunlight, thereby achieving efficiency in PV conversion of the global solar radiation. Specific examples of this scheme exploit commodity silicon (Si) cells integrated with two different CPV module designs, where they capture light that is not efficiently directed by the concentrator optics onto large-scale arrays of miniature multijunction (MJ) solar cells that use advanced III-V semiconductor technologies. In this CPV + scheme ("+" denotes the addition of diffuse collector), the Si and MJ cells operate independently on indirect and direct solar radiation, respectively. On-sun experimental studies of CPV + modules at latitudes of 35.9886° N (Durham, NC), 40.1125° N (Bondville, IL), and 38.9072° N (Washington, DC)more » show improvements in absolute module efficiencies of between 1.02% and 8.45% over values obtained using otherwise similar CPV modules, depending on weather conditions. These concepts have the potential to expand the geographic reach and improve the cost-effectiveness of the highest efficiency forms of PV power generation.« less
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [5] ;  [2] ;  [2] ;  [6] ;  [1] ;  [1] ;  [7] ;  [7] ;  [8] ;  [9] ;  [10] ;  [11] ;  [3] ;  [3] ;  [7] more »;  [1] ;  [12] ;  [12] « less
  1. Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Materials Science and Engineering; Univ. of Illinois, Urbana-Champaign, IL (United States). Frederick Seitz Materials Research Lab.
  2. Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Chemistry
  3. Semprius, Durham, NC (United States)
  4. Tsinghua Univ., Beijing (China). Dept. of Electronic Engineering
  5. George Washington Univ., Washington, DC (United States); Naval Research Lab. (NRL), Washington, DC (United States)
  6. Naval Research Lab. (NRL), Washington, DC (United States)
  7. King Abdullah Univ. of Science and Technology, Thuwal (Saudi Arabia). Integrated Nanotechnology Lab., Computer, Electrical and Mathematical Sciences and Engineering Division
  8. Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Materials Science and Engineering; Univ. of Illinois, Urbana-Champaign, IL (United States). Frederick Seitz Materials Research Lab.; Hanyang Univ., Seoul (Korea, Republic of). Dept. of Materials Science and Engineering; Hanyang Univ., Seoul (Korea, Republic of). Dept. of Energy Engineering
  9. Hanyang Univ., Seoul (Korea, Republic of). Dept. of Materials Science and Engineering; Hanyang Univ., Seoul (Korea, Republic of). Dept. of Energy Engineering
  10. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
  11. Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Univ. of California, Berkeley, CA (United States). Kavli Energy NanoScience Inst.; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
  12. Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Materials Science and Engineering; Univ. of Illinois, Urbana-Champaign, IL (United States). Frederick Seitz Materials Research Lab.; Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Chemistry
Publication Date:
Grant/Contract Number:
AC02-05CH11231; SC0001293; AR0000624
Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 113; Journal Issue: 51; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NNSFC); National Research Foundation of Korea (NRF)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; photovoltaics; multijunction solar cells; concentration optics; diffuse light capture
OSTI Identifier:
1334550
Alternate Identifier(s):
OSTI ID: 1379620