Scientists at Kanazawa University in Japan are experimenting with improving the performance of perovskite-type solar cells by using two special titanium oxides, anatase and brookite.

Researchers claim that by applying a layer of brookite made of water-soluble brookite nanoparticles on the anatase layer, a perovskite-type battery has achieved a conversion efficiency of 16.82%. They said that this method can improve the transport of electrons from the center of the battery to the electrode, and also prevent the recombination of charges at the boundary between the perovskite material and the electron transport layer. Both of these effects enable higher conversion efficiency for perovskite-type batteries. The research team emphasized that the anatase layer was formed by spraying a solution on glass, the glass was coated with a transparent electrode heated to 450 ° C, and the brookite layer was made of water-soluble brookite nanoparticles because This ink is more environmentally friendly than traditional inks. In January of this year, another group of Japanese researchers announced the use of tin dioxide (SnO2) instead of the more commonly used titanium dioxide to produce perovskite solar cells. In early March, scientists from the Argonne National Laboratory of the United States Department of Energy (DOE) announced the results of their research on titanium dioxide substitutes in solar cells. Scientists around the world are currently studying how to use various materials including titanium, tin, and bismuth to replace the lead materials required in the production of ordinary perovskite batteries.

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