High-Efficiency (Over 10%) Parallel Tandem Dye-Sensitized Solar Cells Based on Tri-Carbon Electrodes

Abstract

Ensuring high power conversion efficiency, partially or completely replacing Pt electrodes with inexpensive materials is one of the important development directions of dye-sensitized solar cells (DSSCs). In this work, we have developed a three-component (MWCNTs, carbon black and graphite) carbon (tri-carbon) electrode material for DSSC devices combined with the advantages of high electron transfer kinetics of MWCNTs, plentiful catalytic sites in crystal edges of carbon black and superior electrical conductivity and catalytic activity of graphite. Using a tri-carbon electrode, a Pt electrode, and two N719-sensitized photoanodes, a parallel tandem dye-sensitized solar cells are assembled obtaining a high PCE of 10.26% (Voc = 0.70 V, Jsc = 19.99 mA/cm2, FF = 73.33%). It opens up a new avenue for the development of low-cost and high-performance DSSCs.

Critical Review on Interrelationship of Electro-Devices in PV Solar Systems with Their Evolution and Future Prospects for MPPT Applications

“…Green disposal at the end of the product lifecycle is also conceivable, as nanomaterial-based solar cells have the potential to be made entirely of carbon through rigorous separation, purification, and enrichment methods that guarantee the inherent properties of pure carbon at ideal levels [104]. Fourth-generation: nano photovoltaic Graphene-silicon 18.8% [87] 0-1 TBD TBD TBD Graphene-quantum dot 13.7% [88] Graphene-perovskite 16.1% [89] Graphene/perovskitequantum dot 17.9% [90] Graphene/quantum dot-perovskite 19.8% [91] Graphene-DSSC 11.5% [92] Carbon nanotubes-silicon 20.1% [93] Carbon nanotubes-quantum dot 6.00% [94] Carbon nanotubes-perovskite 37.4% [95] Carbon nanotubes-DSSC 10.3% [96] Graphene/carbon nanotubes-silicon 17.5% [97] Carbon nanotubes/graphenequantum dot 8.28% [98] Carbon nanotubes/silicon/graphenequantum dot 14.9% [99] Graphene/carbon nanotubes-perovskite 19.6% [100] Carbon nanotubes/graphene-DSSC 8.34% [101] These organic nanomaterials are also highly flexible as they can take on other forms of structure [105]. With their flexibility, scientists have created a variety of solar cells that silicon cannot produce.…”