Search

Multi-metal and perovskite oxides are attractive as oxygen evolution electrocatalysts, and thus far the most promising candidates have emerged from experimental methodologies. Active-learning models supplemented by structural-characterization data and closed-loop experimentation can now identify a perovskite oxide with outstanding performance.

Marc Freeman lauds the transgender neurobiologist's posthumously published memoir.

Zoologist whose understanding of chimpanzee behaviours has helped to assure their survival.

Two-dimensional perovskites enable high efficiency in perovskite photovoltaics but compromise operational stability. Yaghoobi Nia et al. form two-dimensional perovskite co-crystals with neutral templating molecules, improving the stability of perovskite solar modules.

From graphite to graphene and government, Mildred Dresselhaus fought for equity all the way.

Wide-bandgap perovskite solar cells suffer from instability under rapid thermal cycling. Here, Sun et al. investigate the degradation mechanism, showing that temperature-induced structural strain, phase transition, and increased non-radiative defects drive the degradation processes.

The two CHAMPION trials failed to show superiority of cangrelor (a rapid-acting, reversible intravenous platelet P2Y₁₂ adenosine receptor antagonist) versus clopidogrel in patients with acute coronary syndromes undergoing percutaneous coronary intervention. The CHAMPION PCI trial, however, did show a significant reduction in death and stent thrombosis suggesting benefit in those without clopidogrel pretreatment.

Defective perovskite surfaces limit solar cell efficiency. Liu et al. introduce a small amount of a polar aprotic solvent into the defect passivation solution, enabling surface reconstruction of the perovskite layer and enhancing its overall quality.

An amorphous–crystalline silicon nitride nanocomposite at the buried interface of perovskite solar cells enables small-area devices with a certified power conversion efficiency of 26.37%. Modules with an area of 1,252 cm² maintain stable output for 6 months of outdoor operation.

The performance of inverted perovskite solar cells has been limited by non-radiative recombination at the perovskite surfaces. Here, authors employ phosphonic acids and piperazinium chloride for homogeneous passivation, achieving certified efficiency of 28.9% for 60 cm² perovskite-silicon tandems.

Long-term stability of organic solar cells is critical to promote practical applications. Here, the authors utilize iridium/iridium oxide nanoparticles as the electron-transporting material and realize enhanced device stabilities under thermal aging with T70 of over 10000 h.

Engineering the perovskite–electrical contact interface with sodium heptafluorobutyrate reduces interfacial defects and improves charge transport in perovskite solar cells. Functionalized devices deliver a certified power conversion efficiency of 26.96%, which is fully retained after 1,200 h of continuous operation under 1-sun illumination.

Achieving desired colloidal dispersion and charge transport of FAPbI₃ perovskite quantum dots remains challenging. Here, the authors incorporate bis(2-ethylhexyl) phosphate to increase configurational entropy and improve solvent interaction, achieving device efficiency of 18.68% for solar cells.

Achieving uniform coverage of interfacial layers in perovskite solar cells is challenging, especially over large areas. Li et al. present design guidelines to fabricate these layers with uniform morphology, suppressed defects and improved charge transport.

Stability issues hinder the commercialization of perovskite solar cells. An evaporated, highly oriented wide-bandgap perovskite film is reported, enabled through an intermediate phase evolution, resulting in enhanced stability and efficiency.

A new asymmetric non-fullerene acceptor, P2EH-1V, is designed and synthesized for constructing devices demonstrating record-high efficiencies of 26.7% (certified at 26.4%) over an aperture area greater than 1 cm² in perovskite–organic tandem solar cells.

The stabilization of perovskites in both solution and solid phases is critical to the fabrication of solution-processed perovskite solar cells. Here, 4-(trifluoromethyl)phenylhydrazine is introduced to enhance storage stability, achieving consistent high efficiency of 26.0% in stable devices.

Bandgap gradient is a promising approach to improve the open-circuit voltage in thin film solar cells. Here, authors incorporate a Cd(O,S,Se,Te) region to realize the bandgap gradient at front interface and demonstrate Cd(Se,Te) solar cells with reduced recombination and a champion efficiency of 20.03%.

The manufacturing of perovskite quantum dot solar cells is hampered by time-consuming layer-by-layer processes. Zhang et al. demonstrate a method for preparing conductive quantum dot inks compatible with fast film printing.

The growth of wide-bandgap perovskites remains insufficiently controlled under hybrid deposition. Here, the authors introduce n-propylamine hydrochloride for regulating the oriented crystal growth, achieving maximum efficiency of 26.46% for two-terminal perovskite/organic tandem solar cells.

Focused actions can bring down barriers that hold back research and development in Africa, according to the inaugural cohort of Calestous Juma Science Leadership Fellows.

Triple-junction solar cells with cyanate in ultrawide-bandgap perovskites exhibit enhanced defect formation energy and substantially decreased non-radiative recombination.

The authors develop a molecular dopant to avoid the dimerization of the electron-selective material phenyl-C₆₁-butyric acid methyl ester, resulting in enhanced stability and efficiency in inverted perovskite solar cells.

The development of hole-selective contacts for Sn-based perovskite solar cells is highly desirable. Here, the authors report self-assembled monolayers with oligoether side chains on the benzothiadiazole unit and achieve an efficiency of 28.61% for operationally stable all-perovskite tandems.

Quantum systems make it challenging to determine candidate Hamiltonians from experimental data. An automated protocol is presented and its capabilities to infer the correct Hamiltonian are demonstrated in a nitrogen-vacancy centre set-up.

Achieving long-term phase-stabilized formamidinium (FA)-based perovskites remains challenging. Here, authors integrate ferroelectric CsMnBr3 nanocrystals into FA-based perovskites for ferroelectric field-mediated structural regulation, achieving maximum efficiency of 26.62% for stable solar cells.

Pei et al. overcome desorption of passivating molecules under photothermal stress in wide-bandgap perovskites and achieve perovskite/Cu(In,Ga)Se₂ tandem solar cells with a certified efficiency of 27.35%.

High efficiency in perovskite solar cells is achieved by using a molecular hybrid of a self-assembled monolayer with nitrilotribenzoic acid.

Radio-frequency transistors made from aligned carbon nanotubes offer high linearity and an extrinsic cutoff frequency of over 100 GHz.

The use of harmful solvents to fabricate stable devices hampers the commercialization of perovskite solar cells. Here, the authors introduce a biorenewable solvent system and precursor-phase engineering to realize stable formamidinium lead triiodide-based solar cells.

An imbalance in I/Pb stoichiometry is thought to lead to defects in metal halide films. Here, Zhang et al. show that the addition of hypophosphorous acid in the precursor solution can significantly improve the film quality and enhance the photoluminescence intensity, leading to improved photovoltaic devices.

An independently certified power conversion efficiency of 32.5% for perovskite/silicon tandem solar cells is achieved through improved charge transfer at the amorphous indium zinc oxide interconnecting layer and reduced optical losses at the front and rear electrodes.

High-quality micron-thick perovskite films with high-Miller-index-oriented grains can be used to achieve high-performance solar cells and modules.

Stress-induced instability of perovskite layers is a critical hurdle for commercialization of perovskite solar cells. Here, the authors introduce a long-alkyl-chain anionic surfactant additive to chemically ameliorate crystallization kinetics and demonstrate devices with long operational stability.

Multielectron molecular CO₂ reduction in acid is challenged by weak CO binding and competing hydrogen evolution. Here a methanol Faradaic efficiency of 62% is achieved in acid by tuning the microenvironment with cationic, hydrophobic and aerophilic layers.

Chen et al. report an interfacial amidation reaction between perovskite precursor and pimelic acid on sacrificial ZnO substrates to fabricate 3D FAPbBr3 films with low trap density of 1.2E10 cm⁻³. The device structure is further optimised to achieve green LEDs with low efficiency roll-off.

The poor stability of narrow bandgap lead-tin perovskites hinders their implementation in multi junction cells. Here, the authors reveal that device performance degradation is caused by an increase in either mobile ion or background hole density, depending on the hole transport material used.

The performance of wide bandgap perovskite solar cells is limited by the carrier recombination at their electron extraction interface. Here, the authors assemble binary 2D perovskites for efficient charge transport and realizing stable perovskite/silicon tandems with device efficiency over 30%.

The instability of quantum dot inks hinders the scaling up of colloidal quantum dot electronics. Now, Shi and team stabilize the inks with an iodine-rich environment in a weakly coordinating solvent, achieving 13.4% in small-area solar cells and over 10% in modules.

The authors demonstrate single-photon γ-ray imaging with pixelated CsPbBr3 semiconductor detector, providing enhanced energy resolution and improving performance uniformity by minimizing mechanically induced defects. This advances applications of perovskites in nuclear medicine.

Tong et al. form a 2D perovskite layer with two large organic cations to improve the structural and optoelectronic properties of Sn–Pb perovskites, and eventually the performance of single-junction and tandem solar cells.

Vernon Morris inspires change in the geoscience community by calling on colleagues to commit to anti-racism in their scientific endeavours.