In conventional organic solar cells, the electrons exhibit their particle-nature and need to jump between organic molecules in the cell. The conductivity is, therefore, lower than that of crystalline silicon solar cells. Researchers have succeeded in arranging the organic molecules in a highly ordered manner like in crystals, and to invoke the wave-nature. “Conductive bands” are formed by energy dispersive states and contribute to the high-carrier conductivity. It may improve the total efficiency of the cell.
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Source: Phys.org