Perfluorinated Self-Assembled Monolayers Enhance the Stability and Efficiency of Inverted Perovskite Solar Cells

Perovskite solar cells are among the most exciting photovoltaic systems as they combine low recombination losses, ease of fabrication, and high spectral tunability. The Achilles heel of this technology is the device stability due to the ionic nature of the perovskite crystal, rendering it highly hygroscopic, and the extensive diffusion of ions especially at increased temperatures.

Superionic conductivity in lithium argyrodite solid-state electrolyte by controlled Cl-doping

The lithium ion conductivity of lithium argyrodite can be improved by introducing Cl to tailor the S/Cl disorder in the structure. An ultrafast room temperature lithium ion conductivity of up to 6.4 mS/cm was achieved for Li5.7PS4.7Cl1.3. The synthesis parameters for Li7-xPS6-xClx (x = 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9) are systematically investigated to obtain pure lithium argyrodite phase with high ionic conductivity.

Topological frustration induces unconventional magnetism in a nanographene

The chemical versatility of carbon imparts manifold properties to organic compounds, where magnetism remains one of the most desirable but elusive. Polycyclic aromatic hydrocarbons, also referred to as nanographenes, show a critical dependence of electronic structure on the topologies of the edges and the π-electron network, which makes them model systems with which to engineer unconventional properties including magnetism.

Zirconium nitride catalysts surpass platinum for oxygen reduction

Platinum (Pt)-based materials are important components of microelectronic sensors, anticancer drugs, automotive catalytic converters and electrochemical energy conversion devices1.