fig2

Figure 2. The variable temperature photovoltaic performance of the single-junction GaAs solar cells. (A) VOC and JSC; (B) FF and PCE; (C) RS/RSH at different temperatures. The laser is 635 nm with a power density of 20 mW cm-2. PCE: Power conversion efficiency; VOC: open circuit voltage; JSC: short-circuit current density; FF: fill factor.