A peer-reviewed solar-materials experiment used upright nanowires to guide formation of a more uniform perovskite film. A small cell achieved certified efficiency of 26.66%, while a larger micro module reached 24.02%. The two areas show how performance changed with scale, though the larger laboratory device still differs from a commercial solar panel.
Perovskites are materials used to absorb light in an emerging type of solar cell. Producing a consistent film over a larger area is a manufacturing challenge. In one peer-reviewed experiment, upright lead-iodide nanowires provided a scaffold for the light-absorbing material. The work examined how that starting structure affected the film as it formed, rather than measuring electrical output alone.[1]
The small cell had an aperture area of 0.0618 square centimetres and certified conversion efficiency of 26.66%. The micro module covered 21.54 square centimetres and was certified at 24.02%. Measured laboratory values were slightly higher, at 26.94% and 24.60% respectively. These are results for different device areas, with an efficiency gap between the cell and interconnected module.[1]
Scattering and diffraction measurements linked the nanowire scaffold with more uniform crystal orientation and fewer defects during subsequent material formation. Researchers also assessed light and heat stability under specified laboratory conditions. The micro module remains smaller than a commercial panel. Those tests leave outdoor service life, consistency of large-area manufacture and management of the lead-containing material to further assessment.[1]
