New Technique Assists Advancement of Solar Cells

The procedure depends on the optical probing of the effective electric field experienced by a material. An external field is applied to the device and affects the absorption spectrum of materials that make up its photoactive layer. The result is referred to as “electro absorption” or the “Stark effect.” Natalie Banerji in Jaques Moser’s laboratory over at EPFL used ultrafast time-resolved electro absorption spectroscopy (TREAS) in order to follow the…

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