Organic photovoltaics (OPVs), solar technologies based on organic semiconductors, have shown great promise both for the scalable provision of clean energy and for the development of solar-powered wearable electronics. Despite their advantages, organic solar cells...
Energy & Green Tech
An amorphous high-capacity iron fluorosulfate cathode
Chemists and engineers have been trying to create increasingly efficient, affordable and stable battery technologies to power a wide range of electronic devices. To do this, they have been leveraging the multi-redox reactions of materials that are highly abundant on...
A strategy to monitor electrolyte evolution in Na- and Li-ion batteries under real working conditions
To meet the growing global demand for electronics that can operate for long periods of time, engineers will need to develop highly performing and stable batteries with increasingly longer lifetimes. To reliably continue improving battery technologies, one should...
Researchers realize perovskite-based phase heterojunction solar cells
Over the past few decades, engineers and material scientists have created increasingly advanced and efficient solar technologies. Some of these technologies are based on photovoltaics with a so-called heterojunction structure, which entails the integration of two...
Stable and efficient organic solar cells based on oligomer acceptors
Organic solar cells are photovoltaic technologies with light-absorbing layers made of conductive organic polymers or organic molecules. These solar energy solutions can have notable advantages over their non-organic counterparts, including lighter weight, a larger...
Study investigates the extent to which e-scooters and e-bikes displace cars using real-world data
Drastically reducing greenhouse gas emissions is of utmost importance to mitigate climate change and its detrimental effects. To work toward this goal, most automotive and transport companies are investing in hybrid and electric vehicles, as well as other...
A high-speed sequential deposition strategy to fabricate photoactive layers for organic cells
Organic photovoltaics, solar energy devices based on organic semiconductors, have so far achieved very promising results in experimental settings, both in terms of efficiency and stability. However, engineers have not yet devised reliable strategies to fabricate these...
A strategy to fabricate kesterite solar cells with a 13% efficiency
Kesterite (Cu2ZnSnS4, CZTS) is a sulfide mineral with a unique lattice structure that can be considered as derived from chalcopyrite CuInSe2 (CIS) by substituting two atoms of In3+ in the chalcopyrite by one atom of Zn2+ and one atom of Sn4+. The elements included in...
Study shows that creating highly performing cobalt-free cathodes is possible
Li-ion batteries, rechargeable batteries based on lithium ions, are currently used to power a wide range of electronic devices, ranging from smartphones to portable computers, toys, wireless headphones, and electric vehicles. Despite their remarkable performances,...
A strategy to create more efficient narrow bandgap (NBG) perovskite films for tandem solar cells
All-perovskite tandem solar cells, solar cells comprised of stacked wide-bandgap (WBG) and narrow-bandgap (NBG) perovskites, could be particularly promising energy solutions. Compared to other existing photovoltaic systems, these cells could achieve good...