Chalcogenide solar cells of CZTS-Copper Zinc Tin Sulfide. A new, high-efficiency material for low-tech solar cells of earthabundant and environmentally friendly elements

    Project Details


    Solar cells of CZTS (Copper Zinc Tin Sulfide) can revolutionize the world. There is

    a global need for a drastic increase of energy production with low cost solar cells

    of environmentally friendly materials. The aim of the project is to understand the

    charge-carrier physics in thin films of the compound CZTS (Cu2ZnSnS4), to

    characterize and produce films of this material and to develop a prototype cell

    with a conversion efficiency of about 10 % - new world record - aiming at a

    longer term efficiency of ~ 20 %. The current choice with high efficiency

    approaching 20% is crystalline or polycrystalline silicon solar cells, which suffer

    from an expensive, complex production process or CIGS [CuIn(orGa)Se2], which

    unfortunately is limited by the decreasing availability and increasing cost of

    indium. The efficiency of CZTS has recently reached 8.4 %. Nevertheless, the

    physical properties of these thin film solar-cell materials including CIGS are not

    yet understood. In the project the photo-physical properties of thin films of CZTS

    will be systematically explored with the finite goal to produce high efficiency

    materials. The objective is to achieve a break-through of the underlying physics

    of CZTS for highly-efficient solar cells of this inexpensive, environmentally

    friendly and abundant material. This can be done by a group with unique

    expertise in complex chemical compounds from Solid-Oxide-Fuel-Cell (SOFC)

    films, materials science, photo-physics, micro-, nanostructure-, terahertz physics

    and solvation chemistry together with an innovative Danish company.
    Effective start/end date01/01/201331/12/2016


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