Figure 8

(a) Structure sketch of the PV cell used in experiments35. (b) Optical photo and cross-sectional SEM image of the triple-junction GaInP/GaInAs/Ge thin film.
(a) Structure sketch of the PV cell used in experiments35. (b) Optical photo and cross-sectional SEM image of the triple-junction GaInP/GaInAs/Ge thin film.