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To turn on and obtain emission from lanthanide-doped insulating nanoparticles, an electrical excitation pathway coupling them to organic optical molecules to form nanohybrids is described, enabling tunable electroluminescence properties of LEDs fabricated from such materials.

Alloying formamidinium into the A-site of red-emitting CsPbI₃ perovskite nanoplatelets enhances their long-term stability and production of linearly polarized light through improved superlattice formation, offering a pathway towards reliable polarized light sources.

The complex coupling between charge-carriers and phonons in bismuth oxyiodide (BiOI) are uncovered, showing how carrier localisation is avoided and long transport lengths achieved. As a result, BiOI is revealed to be highly effective for X-ray detection.

Vegetable oils are used in cooking, manufacturing and supplying biofuel. Now, researchers have identified two new fatty acids in the seed oil of a Brassicaceae species whose biosynthesis involves an unprecedented fatty acid hydroxylation pathway.

Heavy pnictogen-based compounds are promising nontoxic and stable alternatives to lead-halide perovskites, but are limited by carrier localization. Here, by investigating CuSbSe₂, the authors identify how this limitation could be avoided.

Self-assembled perovskite nanoplatelets emit linearly polarized light, enabling the realization of red perovskite light-emitting diodes with a 74.4% degree of linear polarization.

We demonstrate an effective additive engineering strategy to construct Sb₂S₃ indoor photovoltaics (IPVs) with 17.55% efficiency under 1000 lux WLED illumination, enabling high-performance IPV minimodules for powering IoT wireless electronics.

The efficiency of lead-halide perovskite photovoltaics is related to the tolerance of their band-edge charge-carriers to point defects. Here, the authors show that this tolerance can be extended to hot carriers depending on the defect energy level.

Ternary chalcogenides are gaining interest as nontoxic, stable solar absorbers. Here, the authors investigate NaBiS₂, finding cation disorder to be a critical parameter that enables its high absorption strength and unusual charge-carrier kinetics.

Here, the authors introduce a constant light-induced magneto-transport method which seamlessly integrates light, current, and a magnetic field to characterize electron and hole properties across an expansive array of materials.

Photoelectrochemical devices are used for direct solar fuel production, but the stability of light absorbers can hamper their commercial prospects. Integrating a BiOI light absorber into a robust oxide-based architecture with a graphite paste conductive encapsulant results in photocathodes with long-term H₂ evolution activity.

This work introduces lightweight, leaf-like photoelectrochemical devices for unassisted water splitting and syngas production, which could be used in the fabrication of floating systems for solar fuel production.

Lead-halide perovskites could revolutionize the provision of low-cost solar energy but are limited by their neurotoxic lead content, which can readily dissolve in water. A supramolecular complex has now been developed to suppress lead release.

Defect tolerance is a key factor behind the exceptional optoelectronic properties of lead halide perovskites, but it is not well understood. This Review discusses the models for defect tolerance and what has been learnt in generalizing these models to lead-free, stable materials.

Perovskite solar cells can complement silicon photovoltaics in multijunction devices. Here, the authors optimize light harvesting in monolithic perovskite-on-silicon devices and fabricate a certified 23.6% efficient, 1 cm² tandem solar cell with a perovskite device that withstands damp heat tests.

The optoelectronic performance of wide-bandgap semiconductors often cannot compete with that of their defect-tolerant small-bandgap counterpart. Here, the authors outline three main challenges to overcome for mitigating the impact of defects in wide-bandgap semiconductors.

Indoor photovoltaics can meet the power demands of the rapidly increasing number of Internet-of-Things devices and reduce the reliance on batteries. This Review describes materials best suited for indoor photovoltaics, and analyses potential routes to scalability and sustainability.