{"id":11273,"date":"2021-05-06T14:17:13","date_gmt":"2021-05-06T13:17:13","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=11273"},"modified":"2021-07-26T14:09:28","modified_gmt":"2021-07-26T13:09:28","slug":"developing-optimal-semiconductor-solar-cells-perovskite","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/developing-optimal-semiconductor-solar-cells-perovskite\/11273\/","title":{"rendered":"Developing optimal semiconductor solar cells with perovskite"},"content":{"rendered":"
A novel synthetic approach that improves absorber layers in perovskite solar cells could help them achieve their full potential and draw closer to the performance of leading gallium arsenide devices.<\/p>\n
Solar cells that depend on perovskite thin films in order to capture sunlight are fast growing photovoltaic technologies. Lead halide perovskites are more cost effective and easier to manufacture than conventional semiconductors. They also efficiently absorb visible light and display long charge carrier diffusion lengths, which suggests capability to retain light-induced electrons and holes separation, and enable charge transport.<\/p>\n
The performance of semiconductor solar cells centres around absorber materials with a high-quality crystal structure and a narrow bandgap to optimise sunlight harvesting. This maximised bandgap range spans energies of 1.1 to 1.4 eV, corresponding to near-infrared wavelengths.<\/p>\n
Absorber layers that comprise of polycrystalline lead halide perovskites have offered highly effective solar cells. However, their application has been affected by structural disorder and defects.<\/p>\n
Formamidinium lead triiodide contains the smallest bandgap discovered so far, but this bandgap surpasses the ideal range for single-junction devices. One way to minimise the bandgap of perovskites entails forming lead\u2013tin alloys in the absorber, although this introduces crystal defects and instability.<\/p>\n