Analysis of defects in coevaporated high-efficiency Cu(In,Ga)Se2 solar cells

Several Cu(In,Ga)Se 2 solar cells with varying Cu/In+Ga ratio were made by co-evaporation using a three-stage process. Device characterization showed an increased open-circuit voltage for cells closer to stoichiometry, however with a decreased fill factor. This phenomenon was investigated by defect...

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Bibliographische Detailangaben

Hauptverfasser:	Unold, T., Enzenhofer, T., Kaufmann, C.A., KIenk, R., Neisser, A., Sakurai, K., Schock, H.W.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Capacitance Copper Diode lasers Doping Photoluminescence Photovoltaic cells Spectroscopy Substrates Temperature dependence Voltage
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