A compact spectrum splitting concentrator for high concentration photovoltaics based on the dispersion of a lens

J. He, C. A. Flowers, Y. Yao, H. A. Atwater, A. A. Rockett, R. G. Nuzzo

Research output: Contribution to journalArticle

Abstract

Photovoltaic devices used in conjunction with functional optical elements for light concentration and spectrum splitting are known to be a viable approach for highly efficient photovoltaics. Conventional designs employ discrete optical elements, each with the task of either performing optical concentration or separating the solar spectrum. In the present work, we examine the performance of a compact photovoltaic architecture in which a single lens plays a dual role as both a concentrator and a spectrum splitter, the latter made possible by exploiting its intrinsic dispersion. A four-terminal two-junction InGaP/GaAs device is prepared to validate the concept and illustrates pathways for improvements. A spectral separation in the visible range is demonstrated at the focal point of a plano-convex lens with a geometric concentration ratio of 1104X with respect to the InGaP subcell.

Original languageEnglish (US)
Article number06LT01
JournalJournal of Optics (United Kingdom)
Volume20
Issue number6
DOIs
StatePublished - Jun 2018

Keywords

  • dispersion
  • high concentration photovoltaics
  • lens
  • spectrum splitting

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'A compact spectrum splitting concentrator for high concentration photovoltaics based on the dispersion of a lens'. Together they form a unique fingerprint.

  • Cite this