Multijunction or tandem solar cells can split the spectrum over several subcells with different bandgaps to convert sunlight into electricity more effectively than single-junction cells. The monolithic design of third generation silicon energy materials is auspicious for photovoltaics. In this paper, simulation-based studies copper zinc tin sulfide/silicon (CZTS/Si) based on CZTS as an upper su...

Here, the effect of lightly Niobium doped TiO2 layer on the performance of perovskite solar cells has been studied by using solar cell capacitance simulator (SCAPS). N addition, the effects of Niobium concentration, buffer film thickness and operating temperature on the performance of the perovskite solar cell are investigated. For doping level of 3.0 mol% into the TiO2 layer, cell efficiency o...

A model, derived from the detailed balance model from Shockley and Queisser, has been adapted to monolithically grown GaAsP/Si tandem dual junction solar cells. In this architecture, due to the difference of lattice parameters between the silicon bottom cell – acting as the substrate – and the GaAsP top cell, threading dislocations (TDs) arise at the IIIV/Si interface and propagate in the top c...

Monolithic perovskite–silicon tandem solar cells with MoOx hole selective contact silicon bottom show a power conversion efficiency of 8%. A thin 15 nm-thick to n-type Si was used instead standard p+ emitter collect holes and the SiOx/n+ poly-Si structure deposited on other side device for direct tunneling electrons this cell shows ~15% efficiency. With carrier cell, tin oxide, subsequent perov...

LP-CVD ZnO has been developed at IMT as front TCO for amorphous silicon p-i-n single-junction and “micromorph” (microcrystalline/amorphous silicon) tandem solar cells. In comparison with SnO2 (Asahi type U), ZnO demonstrates superior light-trapping behaviour. Applying the monolithic series connection by laser-scribing, both for amorphous single-junction and micromorph tandem cells, modules have...

Electroluminescence allows rapid characterization of an entire photovoltaic solar cell and visualization defects at the micrometer scale. Here we focus on optoelectronic properties silicon interdigitated back contact cells characterized by electroluminescence. The spatially resolved electroluminescence helps us control quality structures used in bottom subcells a three-terminal tandem perovskit...

today, due to qualitative growth and scientific advances, energy, especially electricity is increasingly needed by human society. one of the almost endless and pure energy which have been paid attention over the years is the solar energy. solar cells directly convert solar energy into electrical energy and are one of the main blocks of photovoltaic systems. significant improvement has been made...