21 November

Ultra-Efficient Photovoltaics: Solar Concentration vs. External Photon Recycling

Thursday 21 November 2019, 12:00pm

ICN2 Seminar Hall, ICN2 Building, UAB

Prof. Eugene A. Katz, Department of Solar Energy and Environmental Physics, Swiss Inst. for Dryland Environmental and Energy Research, J. Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Israel. 

Hosted by: CSIC Research Scientist Mónica Lira Cantu, Nanostructured Materials for Photovoltaic Energy Group Leader at ICN2

Abstract:The maximum efficiency of any solar cell (so-called Shockley-Queisser limit) can be evaluated in terms of its ability to emit light in open circuit (OC) and to quench the luminescence in short circuit (SC) [1-2]. In first part of my lecture I will review the basic principles of ultra-high efficient phyotovoltaics as well as their experimental realization using optical concentration of sunlight [3] and external photon recycling [4]. At the second part of the lecture I will raise a question (and give some preliminary answers) if this strategy can be applied to emerging photovoltaic technology based on metal-halide perovskite solar cells [5].


1. W. Shockley and H. J. Queisser, J. Appl. Phys.,, 1961, 32, 510–519.

2. O. D. Miller, E. Yablonovitch and S. R. Kurtz, IEEE J. Photovoltaics, 2012, 2, 303–311.

3. E. A. Katz, J. M. Gordon, W. Tassew and D. Feuermann, J. Appl. Phys., 100, 044514 (2006); O. Korech, B. Hirsch, E. A. Katz and J. M. Gordon. Appl. Phys. Lett., 91, 064101 (2007); J. Zeitouny, N. Lalau, J. M. Gordon, E. A. Katz, G. Flamant, A. Dollet and A. Vossier, Sol. Energy Mater. Sol. Cells, 182, 61 (2018); A. Vossier, J. Zeitouny, E. A. Katz, A. Dollet, G. Flamant and J. M. Gordon, Sustainable Energy Fuels, 2, 2060 (2018).

4. A. Braun, E. A. Katz, D. Feuermann, B. M. Kayes and J. M. Gordon, Energy and Environmental Science, 2013, 6, 1499 - 1503.

5. W. L. Leong, Z. E. Ooi, D. Sabba, C. Yi, S. M. Zakeeruddin, M. Graetzel, J. M. Gordon, E. A. Katz, N. Mathews, Adv. Mater., 28, 2439 (2016).