Phys.org February 20, 2024 Photovoltaics offers a large potential for the supply of clean and renewable energy. Silicon solar cells used for this purpose have efficiency limits. One reason for this is that some of the energy from short-wave radiation is not converted into electricity, but into unwanted heat. Through computer simulation researchers in Germany showed that to increase the efficiency, the silicon solar cell could be provided with an organic layer, for example made from the semiconductor tetracene. Short-wave light is absorbed in this layer and converted into high-energy excitons. These excitons decay in the tetracene into two low-energy […]
Tag Archives: Solar cell
Solar cell also generates electricity from raindrops on rainy days
Nanowerk March 24, 2022 The low efficiency of raindrop energy harvesting is a dominating barrier to the raindrop solar cells in practical applications. An international team of researchers (China, Egypt) has developed a MoO3/top electrode-based triboelectric nanogenerator (MT-TENG) with high rain droplet energy conversion efficiency, integrated with a perovskite solar cell through shared electrodes. The interface electrons between the triboelectric layer and electrode were blocked by the MoO3 layer with high permittivity and wide bandgap, and the MoO3-based TENG (M-TENG) increased the surface charge density. The top electrode structure in the solid–liquid interface increased the output charge by 101.1 times […]