Roll-to-roll fabrication of flexible printed perovskite solar cells under ambient conditions

Sep 29, 2022 (Nanowerk Spotlight) Lightweight and flexible perovskite solar cells are a new technology in which photovoltaic cells are manufactured using roll-to-roll printing and coating methods to deposit all the functional materials such as perovskites on flexible plastic substrates. The ability to print them simply like printing newspapers also...

New light for shaping electron beams

Sep 29, 2022 (Nanowerk News) A new technique that combines electron microscopy and laser technology enables programmable, arbitrary shaping of electron beams. It can potentially be used for optimizing electron optics and for adaptive electron microscopy, maximizing sensitivity while minimizing beam-induced damage. This fundamental and disruptive technology was now demonstrated...

Engineers develop ultra-strong aerogels with materials used in bullet-proof vests

Sep 29, 2022 (Nanowerk News) Aerogels are lightweight materials with extensive microscale pores, which could be used in thermal insulation, energy devices, aerospace structures, as well as emerging technologies of flexible electronics. However, traditional aerogels based on ceramics tend to be brittle, which limits their performance in load-bearing structures. Due...

Algae as microscopic biorefineries

Sep 29, 2022 (Nanowerk News) Fossil raw materials are limited and not available and extractable everywhere in the world – as we are becoming acutely aware of right now by the example of fossil fuels and rising energy prices. Renewable raw material sources will therefore play an increasingly important role...

Arrayed chirality

Sep 28, 2022 (Nanowerk News) Scientists from Japan have employed theoretical calculations to model the optical radiation force distribution induced by an arbitral light pattern including an interference pattern. Based on the simulations, they were able to fabricate nano-sized structures in array that may lead to new optical devices, such...

Novel carrier doping in p-type semiconductors enhances photovoltaic device performance by increasing hole concentration

Sep 28, 2022 (Nanowerk News) The carrier concentration and conductivity in p-type monovalent copper semiconductors can be significantly enhanced by adding alkali metal impurities, as shown recently by Tokyo Tech researchers. Doping with isovalent and larger-sized alkali metal ions effectively increased the free charge carrier concentration and the mechanism was...

Catalytic process with lignin could enable 100% sustainable aviation fuel

Sep 28, 2022 (Nanowerk News) An underutilized natural resource could be just what the airline industry needs to curb carbon emissions. Researchers at three institutions—the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL), the Massachusetts Institute of Technology (MIT), and Washington State University—report success in using lignin as a...