Nanowerk September 5, 2023 Although metal halide perovskites have rapidly enabled a range of high-performance photovoltaic technologies, their catastrophic failure under reverse voltage bias poses a roadblock for their commercialization. An international team of researchers (Princeton University, Saudi Arabia) conducted a series of stress tests to compare the reverse-bias stability of perovskite single-junction, silicon single-junction, and monolithic perovskite/silicon tandem solar cells. They demonstrated that the tested perovskite/silicon tandem devices were considerably more resilient against reverse bias compared with perovskite single-junction devices. The origin of such improved stability stemmed from the low reverse-bias diode current of the silicon subcell. This translated […]
Tag Archives: Perovskite solar cells
Fabrication of perovskite solar cells with just a piece of paper? A new method tells you how! (w/video)
Nanowerk February 15, 2022 Most perovskite films in laboratories around the world are deposited through spin coating which guarantees high control on film thickness as well as morphology. However, most of the ink is expelled during deposition and wasted. An international team of researchers (Iran, Italy) has developed a completely new method that uses a simple sheet of paper to deposit the perovskite films without a spin coater or other large area techniques such as slot-die coating or blade coating. They fabricated solar cells on flexible PET substrates manually with 11% power conversion efficiency. Deposition after soaking the sheet of […]
Solar cells with new interfaces
EurekAlert September 30, 2019 Perovskite solar cells are still unstable due to several internal degradation factors. Most approaches for solving problems of stability and improvement of the efficiency of perovskite cells concern the optimization of the chemical composition of perovskite. An international team of researchers (Italy, Russia) proposed an original approach to design perovskite solar cells with improved performances, namely the use of two-dimensional Titanium-Carbide compounds called MXenes to dope perovskite. They incorporated microscopic amount of MXenes in the perovskite solar cell. As a result, they achieved increase of the efficiency for devices by more than 25 %, compared to […]