Table 1 Photovoltaic performance

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

Gua (%)

J sc (mA cm−2)

V oc (V)

FF

PCE (%)

0

22.50 (22.0 ± 0.8)

1.050 (1.04 ± 0.02)

0.80 (0.74 ± 0.04)

18.88 (17 ± 1)

5.00

22.49 (22 ± 1)

1.070 (1.054 ± 0.01)

0.782 (0.76 ± 0.02)

18.81 (17 ± 1)

10.0

22.53 (22.3 ± 0.3)

1.090 (1.07 ± 0.02)

0.777 (0.75 ± 0.03)

19.09 (17.8 ± 0.9)

14.0

23.19 (22.8 ± 0.3)

1.082 (1.07 ± 0.01)

0.803 (0.79 ± 0.01)

20.15 (19.2 ± 0.4)

17.0

22.54 (21.7 ± 0.5)

1.091 (1.08 ± 0.02)

0.785 (0.78 ± 0.02)

19.29 (18.1 ± 0.7)

20.0

21.31 (21.3 ± 0.5)

1.095 (1.08 ± 0.01)

0.790 (0.77 ± 0.03)

18.43 (17.7 ± 0.8)

25.0

20.85 (20.6 ± 0.7)

1.107 (1.09 ± 0.02)

0.790 (0.77 ± 0.02)

18.30 (17.1 ± 0.8)

  1. Photovoltaic parameters obtained for the best performing cells containing MA/Gua perovskite systems measured under AM1.5G Sun illumination. In brackets are indicated the averaged values for each condition (scan rate: 0.01 V s−1; stabilization time: 5 s).
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