GaInP/GaAs tandem solar cells with highly Te- and Mg-doped GaAs tunnel junctions grown by MBE

Zheng Xin-He†^a),^b), Liu San-Jie^a), Xia Yu^a), Gan Xing-Yuan^b), Wang Hai-Xiao^b), Wang Nai-Ming^b), Yang Hui^b)

(a) Typical J – V curves of GaInP/GaAs tandem solar cells under dark and illuminated conditions. The inset shows a dark J – V curve on a semi-logarithmic plot in which different regions are indicated, (b) EQE (solid square and circle) for the same devices. The solid triangle shows the EQE of the single GaInP solar cell reported in Ref. [ 27 ].