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Current density voltage curves of the solar cell built on sol‐gel processed TiO2:Nb (TNO) and ITO electrodes. Insert graphic shows the energy level diagram of the TNO/ZnO/PEI/ P3HT:PCBM /MoO3/Al organic solar cell.
In this work, we report the fabrication of indium tin oxide free organic solar cells and demonstrate the ability of niobium doped titanium dioxide (TNO) layers produced by sol–gel as feasible alternative electrode. The conductivity of the TNO was tailored by changing the layer thickness and the post‐annealing conditions. Later, the crystal structure was revealed by X‐ray diffraction. The post‐annealing...
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