High‐performance low bandgap thin film solar cells for tandem applications

Thin film tandem solar cells provide a promising approach to achieve high efficiencies. These tandem cells require at least a bottom low bandgap and an upper high bandgap solar cell. In this contribution, 2 high‐performance Cu(In,Ga)Se2 cells with bandgaps as low as 1.04 and 1.07 eV are presented. T...

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Veröffentlicht in:	Progress in photovoltaics 2018-07, Vol.26 (7), p.437-442
Hauptverfasser:	Elanzeery, Hossam, Babbe, Finn, Melchiorre, Michele, Werner, Florian, Siebentritt, Susanne
Format:	Artikel
Sprache:	eng
Schlagworte:	admittance steps Copper indium gallium selenides Copper indium selenides deep defects Electrical impedance high‐performance solar cells low bandgap CIGS Photovoltaic cells quasi‐Fermi‐level splitting Silicon wafers Solar cells tandem applications Thin films
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