[IEEE The Conference Record of the Twenty-Second IEEE Photovoltaic Specialists Conference - 1991 - Las Vegas, NV, USA (7-11 Oct. 1991)] The Conference Record of the Twenty-Second IEEE Photovoltaic Specialists Conference - 1991 - 25.2%-efficiency (1-Sun, air mass 0) AlGaAs/GaAs/InGaAsP three-junction, two-terminal solar cell

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