Three junction holographic micro-scale PV system

Yuechen Wu, Shelby Vorndran, Silvana Ayala Pelaez, Raymond K. Kostuk

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

2 Scopus citations


In this work a spectrum splitting micro-scale concentrating PV system is evaluated to increase the conversion efficiency of flat panel PV systems. In this approach, the dispersed spectrum splitting concentration systems is scaled down to a small size and structured in an array. The spectrum splitting configuration allows the use of separate single bandgap PV cells that increase spectral overlap with the incident solar spectrum. This results in an overall increase in the spectral conversion efficiency of the resulting system. In addition other benefits of the micro-scale PV system are retained such reduced PV cell material requirements, more versatile interconnect configurations, and lower heat rejection requirements that can lead to a lower cost system. The system proposed in this work consists of two cascaded off-axis holograms in combination with a micro lens array, and three types of PV cells. An aspherical lens design is made to minimize the dispersion so that higher concentration ratios can be achieved for a three-junction system. An analysis methodology is also developed to determine the optical efficiency of the resulting system, the characteristics of the dispersed spectrum, and the overall system conversion efficiency for a combination of three types of PV cells.

Original languageEnglish (US)
Title of host publicationNext Generation Technologies for Solar Energy Conversion VII
EditorsGavin Conibeer, Oleg V. Sulima
ISBN (Electronic)9781510602656
StatePublished - 2016
EventNext Generation Technologies for Solar Energy Conversion VII - San Diego, United States
Duration: Aug 29 2016Aug 31 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherNext Generation Technologies for Solar Energy Conversion VII
Country/TerritoryUnited States
CitySan Diego


  • Micro-Scaled Photovoltaic
  • Multi-junction PV
  • Solar energy
  • Spectrum splitting
  • concentrating photovoltaics
  • holography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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