Highly Efficient thin solar film cell was developed by Material Scientists team of UCLA Samueli School of Engineering. Dual Layer Design is accompanied to the updated Solar cell to generate more huge energy from sunlight when compared to typical solar panels. The scientist’s team was led by Yang Yang, UCLA’s Carol and Lawrence E. Tannas Jr. Professor of Materials Science and supported by National Science Foundation and the Air Force Office of Scientific Research
A thin layer of perovskite which consists of lead compound and iodine are sprayed on the device to capture high energy rays of sunlight and the bottom layer is equipped with a compound of copper, indium, gallium, and selenide. This New Dual Layer solar cell converts 22.4 percent of light energy from sun and stores it internally. U.S. Department of Energy’s National Renewable Energy Laboratory also conducted independent tests on this new solar cell which beats the previous record of 10.9 percent energy absorption set in 2015 by a group at IBM’s Thomas J. Watson Research Centre.
The scientists stated that this solar cell design draws energy from two distinct parts of the solar spectrum from the same device and increases the amount of energy generated from sunlight compared to the normal solar cells. The cell’s CIGS base layer, which is about 2 microns absorbs sunlight and generates energy at a rate of 18.7 percent efficiency on its own, but adding the 1 micron-thick perovskite layer improves its efficiency and the whole device is placed over a glass substrate about 2 milli-meters. This technology boosts the performance by 20percent and eventually reach 30percent than normal solar cells. This technique of spraying on a layer of perovskite is inexpensive and can be easily installed into existing solar cell processing.