Electrical contacts made of branched titanium dioxide nanowires developed by developed by researchers from the King Abdullah University of Science and Technology (KAUST) could improve the efficiency of solar cells.
Titanium dioxide is a white pigment commonly used in paint and a versatile electronic material commonly used in solar cells. It is a cheap and abundant compound and has similar electronic states to those of the light-absorbing compounds used in photovoltaics.
This match ensures that electrical charges are efficiently funnelled away from the active region of a solar cell into the titanium dioxide and from there towards the electrical contacts of the device. “It is the most successful electron transporting material in hybrid organic/inorganic photovoltaics,” explains research leader Aram Amassian.
Schematic of the low-cost fabrcation of titanium dioxide nanomaterials by electrospinning.
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