Triple-Junction III–V Based Concentrator Solar Cells: Perspectives and Challenges

Author:

Baur C.1,Bett A. W.1,Dimroth F.1,Siefer G.1,Meusel M.2,Bensch W.3,Köstler W.3,Strobl G.3

Affiliation:

1. Fraunhofer Institut für Solare Energiesysteme, 79110 Freiburg, Germany

2. Fraunhofer Institut für Solare Energiesysteme, 79110 Freiburg, Germany, AZUR SPACE Solar Power GmbH, 74072 Heilbronn, Germany

3. AZUR SPACE Solar Power GmbH, 74072 Heilbronn, Germany

Abstract

This paper gives a review of the work performed in the framework of the EC-funded project FULLSPECTRUM aiming for higher photovoltaic (PV) conversion efficiencies by investigating GaInP∕GaInAs∕Ge triple-junction concentrator solar cells. Lattice mismatched structures reached efficiencies beyond 35% at 600 sun concentration level. These cells are now ready to enter the terrestrial PV market. The perspectives and challenges associated with the market introduction of these cells are addressed. Specifically issues of reliability and on-wafer characterization are discussed. A new characterization tool MAPCON was developed and is presented.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Reference25 articles.

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3. ASTM G173–03e1, 2003, “Standard Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37° Tilted Surface,” ASTM International.

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5. Concentration Photovoltaics for Highest Efficiencies and Cost Reduction;Luther

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