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  • Title: 8.6% Efficient CZTSSe Solar Cells Sprayed from Water-Ethanol CZTS Colloidal Solutions.
    Author: Larramona G, Bourdais S, Jacob A, Choné C, Muto T, Cuccaro Y, Delatouche B, Moisan C, Péré D, Dennler G.
    Journal: J Phys Chem Lett; 2014 Nov 06; 5(21):3763-7. PubMed ID: 26278747.
    Abstract:
    Copper zinc tin sulfide-selenide, Cu2ZnSn(S1-xSex)4 (CZTSSe), thin film photovoltaic devices were fabricated using a fast and environmentally friendly preparation method, consisting of the following steps: An instantaneous synthesis of a Cu-Zn-Sn-S (no Se) colloid, a nonpyrolytic spray of a dispersion of this colloid in a water-ethanol mixture, and a sequential annealing first in a N2 atmosphere and second in a Se atmosphere. The achievement of cell efficiencies up to 8.6% under AM1.5G (cell area 0.25 cm(2)) and without antireflecting coating indicates that this method can compete with other vacuum-based or more complex wet deposition methods.
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