Photo credit: Joondong Kim
Professor Joondong Kim, along with an international team of researchers, have developed a transparent solar cell made from thin films of materials responsible for absorbing light. They combined titanium dioxide and nickel oxide semiconductors to achieve this. The professor believes that the unique features of transparent photovoltaic cells could have various applications in human technology, like used in the windows of skyscrapers.
Titanium dioxide (TiO2), a semiconductor already used to manufacture solar cells, is an eco-friendly and non-toxic material. It absorbs UV light while still letting through most of the visible light range. The second material, nickel oxide (NiO), another semiconductor with high optical transparency, is one of the abundant elements on Earth, and can easily be manufactured at low industrial temperatures. This makes nickel oxide an excellent material to make eco-friendly cells.
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