In order to make use of the current produced in a solar cell, one needs electrodes and cables to transport the produced charge carriers to the consumer – but how do the charge carriers reach the electrodes? In many solar cell types, a conductive material is necessary. As the sunlight still needs to reach the absorber layer (where the energy-transfer from photons to electrons and thus the generation of the charge carriers happens), this material not just needs to be conductive but also transparent in a wide wavelength range. This difficult task is taken over by Transparent Conductive Oxides (TCOs). Metal oxides have shown toRead More →