Prismatic covers for boosting the efficiency of high-concentration PV systems

Andreea Boca, Kenneth M. Edmondson, Richard R. King

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

Prismatic cover experiments were performed on GaInP/Ga(In)As/Ge triple-junction concentrator solar cells having grid designs with up to 39% metal coverage. The devices were characterized both before and after the application of optically-clear silicone covers patterned with cylindrical-lens microstructures. In solar-simulator LIV measurements at 1 sun and at 500 suns, we observed a boost in the efficiency of prism-covered cells, relative to before covering, of up to 34%, depending on the grid coverage fraction. The spectral response of the cells before and after covering was also characterized, and the observed boost in external quantum efficiency was found to be consistent with the LIV performance gains. Also studied were the lateral tolerances allowed by the prismatic covers, for alignment to the underlying cell grid structure, as a function of the maximum angle of incidence of the light impinging onto the cell. Ray-tracing simulations were performed, and found to be consistent with preliminary angular-dependence spectral response measurements done under monochromatic illumination.

Original languageEnglish (US)
Title of host publication2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
Pages131-136
Number of pages6
DOIs
StatePublished - Dec 1 2009
Externally publishedYes
Event2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 - Philadelphia, PA, United States
Duration: Jun 7 2009Jun 12 2009

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Other

Other2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
CountryUnited States
CityPhiladelphia, PA
Period6/7/096/12/09

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Boca, A., Edmondson, K. M., & King, R. R. (2009). Prismatic covers for boosting the efficiency of high-concentration PV systems. In 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 (pp. 131-136). [5411714] (Conference Record of the IEEE Photovoltaic Specialists Conference). https://doi.org/10.1109/PVSC.2009.5411714