Themed collection Journal of Materials Chemistry C HOT Papers

This review provides a comprehensive overview of the molecular engineering techniques used to control polarity in two-dimensional materials and their applications in optoelectronic devices.

Absorption spectra of photoreceptor pigments together with corresponding activators for plant growth LEDs.

This review systematically summarized the synthesis approaches towards both polycrystals and nanocrystals, and discussed the crystal/electronic structure, luminescence principle, and optimized strategies of lanthanide-based Cs₃LnCl₆ metal halides.

Mn-doped CsBr (Mn²⁺:CsBr), along with phase-engineered Cs₃MnBr₅ and CsMnBr₃ perovskite nanocrystals, were synthesized using a simple and rapid microwave-assisted method that allows for tunable emission colors and high color purity.

An in situ integrated method is used to measure the thermoelectric performance of Bi₂Se₃ thin films. The coupling mechanism between thermal rectification effect caused by structural regulation and thermoelectric parameter is tentatively explored.

A new non-fullerene acceptor, CH-TCl, introduced as the third component, optimizes the active layer morphology, enhances charge transfer, and increases the open-circuit voltage of organic solar cells.

Reservoir computing (RC) using a Pt/Gd-doped CeO₂/CeO₂/Pt memristor is systematically investigated, where its time-dependent weight updates and nonlinear decay characteristics are critical for extracting spatiotemporal features in RC applications.

Hg₂(SeO₃)(TeO₃), a new tellurite–selenite birefringent crystal, showcases a broad transparency range, large birefringence, and high thermal stability, positioning it as a promising birefringent material.

The down-shifting emission and the up-conversion emission in Sb³⁺/Yb³⁺/Pr³⁺ co-doped Cs₂NaYCl₆ double perovskites show excellent multimode luminescence and anti-thermal quenching behavior with increasing temperature.

The transition from a single-phase to a mixed-phase thin film forms heterogeneous interfaces that significantly enhance solar-blind photodetector performance.

This work presents a novel energy transfer pathway that enhances SWIR emission, with high IQE and thermal stability.

A high-performance NIR phototransistor with a non-toxic Ag₂Te colloidal quantum dots/ZnO heterostructure.

The electron affinity of TCNQ and F4TCNQ  is pivotal in enhancing the interfacial charge collection and optimizing the energy-level alignment of hole transport layer (HTL)-free inverted perovskite solar cells.

2,5-Substituted silole-D–A-type structures realize hybridized local and charge-transfer excitation in molecules, in which a more balanced hybridization results in efficient OLED applications.

A series of B-spiro-N TADF emitters were prepared using an intramolecular locking strategy, demonstrating a correlation between donor–acceptor strength and photophysical properties, particularly showing aggregation-induced emission enhancement.

Thienyl-based acylhydrazone photoswitches isomerize also in the solid state and adopt a stable triplet ground state in the switched form, which can trigger radical reactions.

Simple polymer Po2F composed of non-fused rings of o-difluorobenzene-quarterthiophene possesses low synthetic complexity and affords OSC devices with a notable efficiency of 15.45%.

The nanoplatelets in polar solvents are created with the assistance of HCl acid and O-diphenylphosphinylhydroxylamine. And they can remain optical property after 15 days and 80% of emission intensity after 1 hour of UV irradiation.

The fastest relaxation time of the LPV of SnSeS/p-Si is about 0.48 μs, the cutoff frequencies (3 dB) can exceed 20 kHz.

The changes in the luminescence properties of the Eu³⁺ ions associated with the thermally induced phase transition in LaGaO₃:Eu³⁺ enables the development of the highly sensitive ratiometric luminescence thermometer.

By PDMS-assisted colloidal lithography, high-aspect-ratio microstructures were employed as the structure for the successful fabrication of broadband near-perfect optical absorbers.

Solution-processable copper halides heal structural defects associated with SCN⁻ vacancies in CuSCN, restoring the coordination environment around Cu(I) and enhancing hole transport properties.

A novel palladium catalyst-free synthesis of highly soluble terrylenes, employed in OFET and OPT devices for the first time achieving high mobility and high photoresponsive metrics.

We combine macroscopic quantum electrodynamics theory with open quantum systems theory, to calculate the transient radiation of molecules arranged in the nanocavity created with a scanning tunnelling microscope.

A facile approach enables multi-stimuli-responsive and steady-state color-tunable luminescence in UOP materials by regulating multimode emissions, allowing direct visualization-based applications in multicolor patterning and visual monitoring system.

We present the first known room-temperature LC DTCP derivatives, where non-planar molecular interactions drive LC phase formation, enabling photochromic response, fast switching, and tunable optical properties.

A rapid 2D co-assembly creates chiral hybrid materials by templating gold nanorods (GNRs) with poly(phenylacetylene) (PPA) nanosheets. GNRs quickly form precise chiral arrangements with strong plasmonic dichroism and PPAs possess enhanced CPL.

The discovery of the novel Gd₃Co_1+xNi_1−x compound is reported. It is shown that the magnetocaloric properties are among the best in its working temperature range and Co/Ni substitution tunes the working temperature without compromising performance.

A triboelectric nanogenerator based on the CAU-10-(SO₃H)₀.₀₈(OH)₀.₉₂/PVC composite film, exhibiting excellent moisture resistance and cycle stability, was designed and successfully applied to water electrolysis for hydrogen production.

Al₁₁Ce₃ intermetallics with porous network structures are fabricated, which present excellent adsorption and catalytic properties for polysulfide conversion, and show stable electrochemical properties as sulfur host networks for Li–S batteries.

Flexible conductive elastomer materials are promising for applications in wearable, flexible sensor devices, human motion monitoring, and other fields.

A surface cooling strategy was adopted, which suppresses Sn loss and facilitates Se diffusion during the selenization process, thereby optimizing the metal element distribution and photovoltaic performance of the CZTSSe absorbers.

Use of an o-F-PEABr ligand containing an intramolecular hydrogen bond can effectively suppress low-n phases in quasi-2D perovskites. The resultant light-emitting diodes achieve a maximum efficiency of 7.55% and a pure blue emission at 475 nm.

Bi₂OS₂ and Bi₃O₂S₂Cl epitaxial thin films with strong spin–orbit interaction were selectively synthesized by mist chemical vapor deposition.

By adjusting the stoichiometric ratio of the CISe core and doping with Zn²⁺, highly efficient PLQY, near-infrared and environmentally friendly CISe QDs have been successfully synthesized.

The Fe₄₉Rh₅₁ bulk alloy exhibits a sharp FOPT from the AFM to FM state around 332 K, with a volume change of 0.8%. A kinetic arrest of the AFM phase is evidenced up to 70 K above the FOPT temperature by neutron diffraction experiments.

The machine learning technique is promoted to accelerate the development of high-performance AgNbO₃-based AFE ceramics. Guided by the predicted values, a high W_rec of 7.0 J cm⁻³ is achieved experimentally.

The trans-3 tris-addition endohedral nitrogen fullerene derivatives with transversal stretching, microsecond-scale quantum coherence time, and addressable energy levels were synthesized, offering a scalable approach for future 2D spin assemblies.

A series of color-tunable Sr₃Ga_1−xGe_xO_4+xF_1−x:1%Bi³⁺ oxyfluoride phosphors have been designed by chemical unit co-substitution for applying in the multi-level anti-counterfeiting field.

Electrolyte-gated transistors (EGTs) with organic polymer electrolytes are promising candidates for wearable bioelectronic devices, owing to their inherent flexibility and biocompatibility.

The energy transfer between IDIC and Y6 improves the photoluminescence quenching efficiency and promotes effective charge transport/extraction within the ternary blend, resulting in a PCE of 19.67% for the ternary organic solar cell.

Natural cellulose exhibits exceptional water resistance and interfacial compatibility, optimizing organic/inorganic interfaces to improve the stability of all-polymer solar cells.

Organic crystals integrate multicolor emissions from semiconductor quantum dots via a modular assembly approach. This modular strategy merges the advantages of quantum dots and organic crystals for versatile photonics.

Hollow particle-integrated Co-ZIF-HPT-700 nanotube composites reach RL_min values of −76.93 dB at 8.96 GHz (10 wt% filling). Tuned thickness enables full-band absorption in the X and Ku bands, demonstrating superior microwave absorption potential.

The temperature of the thermosalient phase transition can be tuned within a range of 15 °C by varying the TBB content by 8% in the molecular TBB–TCB alloys.

The biomass sauce-flavor liquor lees-derived carbon cathodes are specially designed for aqueous zinc-ion hybrid supercapacitors. And which achieved a high specific capacity (221.1 mA h g⁻¹), a high energy density (160.9 W h kg⁻¹) and remarkable durability.

Ligand engineering was employed to enhance charge transfer at graphene/PbS interfaces, boosting carrier transfer efficiency and photodetector detectivity.

OIMHs incorporating NDI cations exhibit flexible deformation under stress and function as mechanochromic and photothermal conversion materials, demonstrating their soft and multifunctional nature.

A rose bengal intercalated layered double hydroxide composite photocatalyst demonstrates excellent catalytic activity in heterogeneous flow chemistry to achieve a very rapid organic synthesis under visible-light irradiation powered by LEDs.

An innovative chemical formula of Cu_1.8S_1−xP_x was proposed to tune the Cu–to–S ratio while enhancing both thermoelectric and mechanical properties by mixed phase engineering.

A threshold switching device with a NbSe₂/Nb₂O₅ functional layer was made by oxidizing 2D NbSe₂. Leveraging Nb₂O₅'s high resistivity and NbSe₂'s blocking effect on Ag ion diffusion, the device achieves low power and high endurance.

Finding the right combination of conditions to synthesize and characterize new semiconducting superatomic crystals requires strategy, perseverance, and a little bit of luck.

A ratiometric luminescent nanothermometer with high sensitivity is developed with Er³⁺-sensitized upconversion emission of Tm³⁺via Yb³⁺-mediated energy migration.

SnO₂-supported Pd single atoms coupled with small cluster structures, incorporated into sensing platforms, exhibit exceptional performance and selectivity toward CO.

Phosphorus-rich InAsP nanowires are grown on silicon via molecular beam epitaxy. Nanowires demonstrate room temperature photoluminescence at wavelengths as short as 1480 nm which is promising for optical communication and biomedical imaging.

A capacitive memory with a pPFPA_x-co-SP_y dielectric layer achieves an eight-level storage capability, ultra-low power consumption of 1.91 × 10⁻¹⁰ W, and multilevel data encryption, showcasing vast potentials in smart electronics.

The rigid O-bridged triphenylborane is used for developing thermally activated delayed fluorescent Pd(II) complexes by combining the concepts of metal-perturbed intraligand charge transfer excited states and intramolecular noncovalent interactions.

Narrowband emissive fluorophores are designed and synthesized by combining multiple-resonance chromophore and anthracene units, which also exhibit capability to rapidly convert triplet excitons into singlet excitons via high-lying reverse intersystem crossing.