Fig. 4: Champion device and thermal stability test. | Nature Energy

Fig. 4: Champion device and thermal stability test.

From: Large guanidinium cation mixed with methylammonium in lead iodide perovskites for 19% efficient solar cells

Fig. 4

a,b, J–V curve (a) and EQE spectrum (b) of the champion cell prepared with mixed MA/Gua perovskite containing 14% Gua. c, MPP tracking under 1 Sun AM1.5G illumination measured in air, for a typical high-efficiency cell (MA1–x GuaxPbI3 (x = 0.14)). d, Thermal stability test of MA1–x Gua x PbI3 perovskite solar cells (x = 0, 0.125, 0.15, 0.25) at 60 °C under continuous light illumination and MPP tracking in an argon atmosphere. The initial PCE for each cell was 18.77%, 18.97%, 18.11%, and 17.14%, respectively.

Back to article page