Can up- and down-conversion and multi-exciton generation improve photovoltaics?

Hagay Shpaisman, Olivia Niitsoo, Igor Lubomirsky, David Cahen

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Photon up-conversion (UC) and photon-induced multiple-exciton generation (MEG) are proposed directions that are of increasing interest for improving photovoltaic (PV) conversion efficiencies via "photon (or light) management". Straightforward analysis of these approaches for non-concentrated single-junction cells in the detailed balance limit yields a theoretical PV conversion limit of 49%, instead of 31% without UC and MEG. With what we estimate to be optimistic, maximal realistic efficiencies (25% for UC; 70% for MEG) this limit becomes

Original languageEnglish
Pages (from-to)1541-1546
Number of pages6
JournalSolar Energy Materials and Solar Cells
Volume92
Issue number12
DOIs
Publication statusPublished - Dec 2008

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Excitons
Photons
Conversion efficiency
LDS 751
Direction compound

Keywords

  • Down-conversion
  • Efficiency
  • Multiple-exciton generation
  • Photon management
  • Up-conversion

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films

Cite this

Can up- and down-conversion and multi-exciton generation improve photovoltaics? / Shpaisman, Hagay; Niitsoo, Olivia; Lubomirsky, Igor; Cahen, David.

In: Solar Energy Materials and Solar Cells, Vol. 92, No. 12, 12.2008, p. 1541-1546.

Research output: Contribution to journalArticle

Shpaisman, Hagay ; Niitsoo, Olivia ; Lubomirsky, Igor ; Cahen, David. / Can up- and down-conversion and multi-exciton generation improve photovoltaics?. In: Solar Energy Materials and Solar Cells. 2008 ; Vol. 92, No. 12. pp. 1541-1546.
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