Researchers at the University of Liverpool, UK, have discovered factors that limit the conductivity of fluorine-doped tin dioxide, which may actively promote the development of solar cell glass coatings.
Physicists at the University of Liverpool have identified factors that limit the conductivity of fluorine-doped tin dioxide.
The researchers found that every two fluorine atoms that provide additional free electrons would occupy a normally unoccupied lattice position in the crystal structure of tin dioxide. Each such so-called "gap" fluorine atom captures a free electron and thus becomes a negative charge. This reduces the electron density by half, which also leads to an increase in the scattering of the remaining free electrons, which in turn leads to a low conductivity of fluorine-doped tin dioxide.
With this important discovery, we can look for ways to improve coating transparency, as well as increase conductivity by a factor of five, reduce costs, and increase the performance of many applications such as touchscreens, LEDs, photovoltaic cells, and energy-efficient windows. The research team is currently looking for new alternative dopants that can avoid the above-mentioned undesirable factors.
In addition to physicists at the University of Liverpool, scientists from the University of Surrey's ion beam center, University College London and the international glass manufacturer NSG Group also participated in the study.
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