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Table 1

Parameters of the layers forming the heterojunction for each cell.

Cells Tandem-Si CIGS Perovskite



Layers a-Si:H (i) μc-Si (n) a-Si:H (i) CIGS CdS TiO2 Perovskite Spiro-HTM
Parameters
d (μm) 0.01 200 0.01 1 0.1 0.05 0.323 0.350
Eg (μm) 1.72 1.15 1.72 1.2 2.4 3.2 1.55 3
χ 3.9 4 3.9 4.1 4 3.9 3.9 2.45
ε 11.9 11 11.9 10 10 9 6.5 3
Nc (cm−3) 1020 2.8 × 1019 1020 1019 1019 2.2 × 1018 2.2 × 1018 2.2 × 1018
Nv (cm−3) 1020 1019 1020 1019 1019 1.8 × 1019 1.8 × 1019 1.8 × 1019
(cm·s−1)νthn 107 107 107 107 107 107 107 107
(cm·s−1)νthp 107 107 107 107 107 107 107 107
(cm2·s−1)μn 20 816 20 25 50 5 2 2×10−4
(cm2·s−1) μp 5 480 5 10 25 5 2 2×10−4
Nd 1014 5 × 1016 1014 5×1017 2 × 1019 1013
Na 1014 1014 4 × 1016 1013 2 × 1018