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Secondary phases or multi-step phase formation lead to poorly crystallized and defective kesterite films. Now Zhou et al. convert precursors into kesterite in a single step, using low partial pressure of selenium, and achieve solar cells with 13.8% certified efficiency.
Multiple exciton generation can potentially improve the efficiency of solar-driven devices, but its demonstration for solar fuel production is rare. Here the authors show that quantum efficiencies above 100% are achievable in a water splitting photocatalyst, implying the presence of multiple exciton generation effects.
How a nuclear power phase-out may affect air pollution, climate and health in the future is up for debate. Here the authors assess impacts of a nuclear phase-out in the United States on ground-level ozone and fine particulate matter (PM2.5).
Understanding the impact of future climate variations and urban densification is key to planning renewable energy integration. By developing a multi-scale spatio-temporal modelling framework, Perera et al. reveal changes in wind speed and temperature across European cities.
Solar hydrogen production devices have demonstrated promising performance at the lab scale, but there are few large-scale on-sun demonstrations. Here the authors present a thermally integrated kilowatt-scale pilot plant, tested under real-world conditions, for the co-generation of hydrogen and heat.
It can be challenging for conventional electrochemical measurements to distinguish different types of charge storage mechanisms in electrochemical systems. Here the authors develop an in situ ultraviolet–visible spectroscopy approach as a powerful and affordable tool for this purpose.
Single-crystalline layered oxides are much sought after as they offer high-performance promises in batteries. Here the authors report a facile and scalable planetary centrifugal mixing technique—aided by eutectic lithium salts—that enables the growth of high-quality single-crystalline cathode materials.
Windows are one of the least energy efficient parts of the building envelope because of poor thermal insulation. Abraham et al. develop a cellulose-based aerogel as a thermal barrier for windows that retains their optical properties.
The critical current density is generally used to evaluate dendrite-suppression capability in batteries. Here the authors propose a critical interphase overpotential descriptor for dendrite suppression and demonstrate high-performance solid-state battery design with the new descriptor.
Improving the manufacturability of perovskite solar cells is key to their deployment. Zheng et al. report a one-step deposition of the hole-selective and absorber layers that addresses wettability issues and simplifies the fabrication process.
Inorganic perovskite solar cells suffer from charge carrier losses. Chu et al. treat the perovskite surface with caesium fluoride, forming a wider-bandgap perovskite that increases the carrier lifetime and hole extraction efficiency.
Photocatalytic synthesis of H2O2 is an attractive route to this important chemical and potential energy carrier, but improvements in performance and operation without sacrificial agents are needed. Here the authors report a porphyrin-based photocatalyst with promising performance for H2O2 production from only H2O and O2.
The design of low-dimensional interface materials for perovskite solar cells is limited in the choice of the metal cation. By processing metal and ammonium halides together, Ye et al. expand the metal cation library for these interface materials.
Between 2013 and 2017, China enacted a series of policies to improve air quality by promoting a switch to cleaner fuels for households. This study examines the changes in energy cost and associated energy burden across regions and income groups during this period, finding an increased burden on rural households.
The mechanism of oxygen redox in high-energy transition metal oxide cathodes is elusive. Here the authors illustrate the nature of the electron-hole states on oxide ions, offering insights for realizing reversible, high-voltage cathodes.
The Russia–Ukraine war triggered an energy crisis that affected the cost of many goods and services. Guan et al. model the direct and indirect impacts of increased energy prices across expenditure groups and countries, finding temporary increases in total household energy costs of 63–113% under different scenarios.
Controlling the nucleation and growth is essential for enabling long-life Li-metal batteries. Here the authors report the growth of faceted single-crystalline Li seeds on a lithiophobic Fe/LiF composite substrate that enables dense Li deposition under fast-charging conditions.
Solar cells based on 3D/2D perovskite heterostructures show promising performance, but ion diffusion limits the device stability. Now Luo et al. suppress ion diffusion by inserting a cross-linked polymer between the 2D and 3D layers, improving the operational stability.
Concerns about energy and transport poverty are critical to the net-zero transition but are growing in the wake of recent global events. This study presents findings from focus groups with the public and expert interviews in the United Kingdom on support for different policy options to address these challenges.
Lithium-ion batteries are prone to unpredictable failure during fast charging, known as lithium plating. Now, innovative testing protocols can quickly quantify lithium plating and inform battery design strategies to mitigate it.