A team of materials scientists from the ULCA Samueli School of Engineering have recently developed an extremely efficient thin-film solar cells. This cell generates comparatively more energy from the sunlight than the typical solar panels. This has been made possible, thanks to the double-layer design.
The device has been made by the spraying a thin layer of the perovskite, which is an inexpensive compound of iodine and lead that has been shown to be quite efficient at capturing the energy from the sunlight. And this is a commercially available solar cell. Furthermore, the solar cell that procedures the bottom layer of the device that is made of a compound of copper, gallium, indium, selenide, or CIGS.
The new cell of the research team has converted 22.4 percent of the incoming energy from the sun, which is a record in power conversion efficiency for a perovskite-CIGS tandem solar cell. The performance was further confirmed in the independent tests that was done at the Department of Energy’s National Renewable Energy Laboratory in the U.S. the previous record that was set in the year 2015 by a group at the IBM’s Thomas J. Watson Research Center, which was around 10.9 percent. The device that has been designed by ULCA that has an efficiency rate is quite similar to that of the poly-silicon thin-film solar cells, which is being recently dominated in the photovoltaics market.
In this research that was published today in the Science, which was led by Yang Yang, the UCLA’s Lawrence E. Tannas and Carol who are professors of Materials Science. They further state that with their tandem thin-film solar cells design, they are drawing energy from two different parts of the solar spectrum in the same device area.