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Layering Titanium Oxide's Different Mineral Forms for Better Solar Cells
https://www.kanazawa-u.ac.jp/latest-research/65168Layering Titanium Oxide’s Different Mineral Forms for Better Solar Cells
Feb 28, 2019
Abstract:
A Japan-based research team led by Kanazawa University improved the efficiency of a new type of solar cell with a double layer consisting of pure anatase and brookite, two different mineral forms of titanium oxide. Using water-solute brookite nanoparticles, a brookite layer was fabricated on top of anatase, increasing solar cell efficiency by up to 16.82%.
Kanazawa, Japan – Researchers have layered different mineral forms of titanium oxide on top of one another to improve perovskite-type solar cell efficiency by one-sixth. The layered titanium oxide layer was better able to transport electrons from the center of the cell to its electrodes. This novel approach could be used to fabricate even more efficient perovskite-type solar cells in future.
…
Now, a Japan-based research team centered at Kanazawa University has carried out a more detailed study into perovskite solar cells using electron transport layers made of anatase and brookite, which are different mineral forms of titanium oxide. They compared the impact of using either pure anatase or brookite or combination layers (anatase on top of brookite or brookite on top of anatase). The team’s study was recently published in the ACS journal Nano Letters.
The anatase layers were fabricated by spraying solutions onto glass coated with a transparent electrode that was heated to 450 °C. Meanwhile, the researchers used water-soluble brookite nanoparticles to create the brookite layers, as water-soluble inks are more environmentally friendly than conventional inks. These nanoparticles have been yielded poor results in the past; however, the team predicted that combination layers would solve the issues previously encountered when using the nanoparticles.
…
These results open up a new way to optimize perovskite solar cells, namely via the controlled stacking and manipulation of the different mineral forms of titanium oxide.
…
http://dx.doi.org/10.1021/acs.nanolett.8b04744Feb 28, 2019
Abstract:
A Japan-based research team led by Kanazawa University improved the efficiency of a new type of solar cell with a double layer consisting of pure anatase and brookite, two different mineral forms of titanium oxide. Using water-solute brookite nanoparticles, a brookite layer was fabricated on top of anatase, increasing solar cell efficiency by up to 16.82%.
Kanazawa, Japan – Researchers have layered different mineral forms of titanium oxide on top of one another to improve perovskite-type solar cell efficiency by one-sixth. The layered titanium oxide layer was better able to transport electrons from the center of the cell to its electrodes. This novel approach could be used to fabricate even more efficient perovskite-type solar cells in future.
…
Now, a Japan-based research team centered at Kanazawa University has carried out a more detailed study into perovskite solar cells using electron transport layers made of anatase and brookite, which are different mineral forms of titanium oxide. They compared the impact of using either pure anatase or brookite or combination layers (anatase on top of brookite or brookite on top of anatase). The team’s study was recently published in the ACS journal Nano Letters.
The anatase layers were fabricated by spraying solutions onto glass coated with a transparent electrode that was heated to 450 °C. Meanwhile, the researchers used water-soluble brookite nanoparticles to create the brookite layers, as water-soluble inks are more environmentally friendly than conventional inks. These nanoparticles have been yielded poor results in the past; however, the team predicted that combination layers would solve the issues previously encountered when using the nanoparticles.
…
These results open up a new way to optimize perovskite solar cells, namely via the controlled stacking and manipulation of the different mineral forms of titanium oxide.
…