Researchers from East China University of Science and Technology and Australia-based Griffith University have examined the effects of surface decoration of perovskites on the stability of resulting perovskite solar cells. They reported that such configurations have shown to be more stable than the untreated surface of perovskites.

The team reported a chelation strategy for surface engineering of CsPbI₂Br perovskite, in which dithiocarbamate molecules can be coordinate to surface Pb sites via strong bidentate chelating bonding. Such chelated CsPbI₂ Br perovskite can realize excellent passivation of surface under-coordinated defects, reaching a power conversion efficiency of 17.03% and an open-circuit voltage of 1.37 V of CsPbI₂Br solar cells.

NUS researchers have developed transparent, near-infrared perovskite light-emitting diodes (LEDs) that could be integrated into the displays of smart watches, smart phones and augmented or virtual reality devices.

a A transparent PeLED overlaid across a smart-watch display to show high optical transparency and neutral color. b Near-infrared photo showing bright NIR electroluminescence from the transparent PeLED above the smart-watch display. Image from article

These transparent devices are constructed with an ITO/AZO/PEIE/FAPbI₃/poly-TPD/MoO₃/Al/ITO/Ag/ITO architecture, and offer a high average transmittance of more than 55% across the visible spectral region.

This is a sponsored post by TCI Chemicals

A team of scientists, led by the Toda Research Center at Tokyo Chemical Industry Company Limited (TCI) and Kyoto University, has designed and synthesized a series of cost-effective hole-transporting materials (TOP-HTMs) for perovskite solar cells.

The newly designed materials were successful in realizing high power conversion efficiencies (PCEs) both with and without additives. In addition, the resulting solar cell that was fabricated using these materials showed impressively high stability.