Extended Data Fig. 6: Front IZO thickness optimization.
From: Enhanced optoelectronic coupling for perovskite/silicon tandem solar cells
a, Simulated 1 − R spectra of tandem device stack with different front IZO thicknesses. b, The sheet resistivity of IZO films with used thicknesses. c, LT-SPICE simulation of PCE evaluation with different finger spacing for 40-nm-thick front IZO. d, Weighted absorptance (calculated from 280 to 800 nm) in relation to sheet resistance for the different IZO thicknesses. The dashed lines indicate curves of constant figure of merit (FOM). e, EQE and 1 − R spectra of perovskite/silicon tandem devices with 40-nm and 70-nm IZO TCOs. f, SEM image of silver finger. Scale bar, 20 µm. g, The statistical distribution of device parameters of 40-nm and 70-nm IZO thicknesses. Note that rear reflector optimizations have not yet been applied to the device stack.
