Solar cells

Unveiling Defect-Mediated Charge-Carrier Recombination at the Nanometer Scale in Polycrystalline Solar Cells

Solar cells made of polycrystalline thin-films can outperform their single-crystalline counterparts despite the presence of grain boundaries (GBs). To unveil the influence of GBs, high spatial resolution characterization techniques are needed to …

Synthesis of (CuInS2)0.5(ZnS)0.5 Alloy Nanocrystals and Their Use for the Fabrication of Solar Cells via Selenization

Kesterite Cu $_textrm2$ ZnSn(S,Se) $_textrm4$ Absorbers Converted from Metastable, Wurtzite-Derived Cu $_textrm2$ ZnSnS $_textrm4$ Nanoparticles

Wurtzite-derived copper−zinc−tin sulfide nanoparticle films were observed to undergo a phase transformation to a kesterite phase when exposed to Se vapor at 500 °C. The resulting dense and selenized Cu2ZnSn(S,Se)4 (CZTSSe) films were found to have the …

Cu2ZnSn(S,Se)4 solar cells from inks of heterogeneous Cu–Zn–Sn–S nanocrystals

The solution-based synthesis of quaternary Cu2ZnSnS4 (CZTS) nanocrystals and further processing into a homogeneous photovoltaic absorber film prove challenging due to the stability of binary and ternary chalcogenide compounds comprised of Cu, Zn, and …

Fabrication of 7.2% Efficient CZTSSe Solar Cells Using CZTS Nanocrystals

Earth abundant copper-zinc-tin-chalcogenide (CZTSSe) is an important class of material for the development of low cost and sustainable thin film solar cells. The fabrication of CZTSSe solar cells by selenization of CZTS nanocrystals is presented. By …