MONOCRYSTALLINE GERMANIUM WAFERS, METHOD FOR PREPARING THE SAME, METHOD FOR PREPARING INGOTS AND USE OF MONOCRYSTALLINE WAFERS

A monocrystalline germanium wafer that increases the open-circuit voltage of multijunction solar cells, a method for preparing the monocrystalline germanium wafer and a method for preparing an ingot from which the monocrystalline germanium wafer is prepared. The monocrystalline germanium wafer that...

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Hauptverfasser: ZHOU, Yvonne, WANG, Yuanli, CHU, Sung-Nee George, LIU, Weiguo, SHETTY, Rajaram
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A monocrystalline germanium wafer that increases the open-circuit voltage of multijunction solar cells, a method for preparing the monocrystalline germanium wafer and a method for preparing an ingot from which the monocrystalline germanium wafer is prepared. The monocrystalline germanium wafer that increases the open-circuit voltage of the bottom cell of multijunction solar cells is prepared by adjusting the amounts of the co-dopants silicon and gallium in the monocrystalline germanium wafer, the ratio of silicon to gallium in the preparation of the monocrystalline germanium.