Analysis for efficiency potential of II–VI compound, chalcopyrite, and kesterite-based tandem solar cells

Loss Analysis of High-Efficiency Perovskite/Si Tandem Solar Cells for Large Market Applications

“…The Si tandem solar cells [13] consisting of III-V, II-VI, chalcopyrite and perovskite top cell and Si bottom cell are attracting a great deal of attention because of high-efficiency and low-cost potential. Optimum bandgap energy combination for high-efficiency Si tandem solar cells was calculated [28] [29]. Figure 5 shows calculated efficiency in radiative limit of Si tandem solar cells as a function of number of junctions.…”

Emergence of flexible kesterite solar cells: progress and perspectives

“…Provided that the efficiency of CZTS solar cells can be enhanced to a more commercially acceptable level (>15%), the commercialization pathway will become clearer. On the other hand, as the urge to develop high-efficiency and low-cost tandem PV technologies is more and more appreciated [20][21][22] , flexible low bandgap CZTSSe has a great opportunity to be integrated into all-thin-film flexible tandem technologies as one of the few promising low-cost thin-film bottom cells 20 . Low bandgap CZTSSe, especially pure-selenide CZTSe, has an optimal bandgap of ~1.0 eV for the bottom cell of a twojunction tandem 23,24 .…”

Emergence of flexible kesterite solar cells: progress and perspectives

“…Provided that the e ciency of CZTS solar cells can be enhanced to a more commercially acceptable level (>15%), the commercialization pathway will become clearer. On the other hand, as the urge to develop high-e ciency and low-cost tandem PV technologies is more and more appreciated, [20][21][22] exible low bandgap CZTSSe has a great opportunity to be integrated into all-thin-lm exible tandem technologies as one of the few promising low-cost thin-lm bottom cells. 20 Low bandgap CZTSSe, especially pure-selenide CZTSe, has an optimal bandgap of ~1.0 eV required for the bottom cell of a two-junction tandem.…”

“…On the other hand, as the urge to develop high-e ciency and low-cost tandem PV technologies is more and more appreciated, [20][21][22] exible low bandgap CZTSSe has a great opportunity to be integrated into all-thin-lm exible tandem technologies as one of the few promising low-cost thin-lm bottom cells. 20 Low bandgap CZTSSe, especially pure-selenide CZTSe, has an optimal bandgap of ~1.0 eV required for the bottom cell of a two-junction tandem. 23,24 Moreover, the demerit of low-e ciency of CZTSSe could be largely mitigated, for instance, the e ciency gap between single junction CZTSSe and CuInSe 2 could be reduced by half if introduced into two-junction tandem cells.…”