Themed collection Journal of Materials Chemistry C HOT Papers

This review discusses the material selection, device design approaches, and state-of-the-art applications of wearable and implantable transient bioelectronics.

The development of piezoelectric composite (PEC) gas sensors is progressing rapidly, driven by innovations that range from atomic-level material design to system-level integration.

This review summarizes recent advances in AIP Pt(II) complexes, covering design strategies, photophysical mechanisms (RIM, RSDE, oxygen shielding), and applications in imaging, OLEDs, and sensing, while highlighting future development directions.

Metal oxide-based resistive switching memristors are emerging as promising nanodevices for the hardware implementation of neuromorphic computing. We focus on the development of a neuromorphic computing system based on metal oxide memristors.

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.

Alternating current electroluminescent (ACEL) devices have become an important direction for the development of visualized smart wearable e-textiles due to their advantages of light weight, flexibility, easy integration, and convenient processing.

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.

Light-driven self-organized ionogel patterns with modulus gradients for ultrasensitive, customizable sensing.

Localized electron transport channel is developed in inverted PSCs with nanoscale phase-separated PM6:PCBM to inhibit interfacial recombination. Resulting PSCs exhibit high efficiency of 25.60% with good stability.

Adjacent compensated codoping (alloying) is presented as an alternative approach to modify the electrical and optoelectronic properties of semiconductors.

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.

We report a white organic light-emitting diode with a low turn-on voltage of less than 1.5 V. We utilized upconversion that can produce high-energy blue emission at a small voltage, and incorporated sky-blue and yellow dopants to realize white color.

Controlling the Y feeding time enabled microstructural tuning and dielectric optimization in ALD-grown rutile TiO₂ capacitors.

Using a dual inducing layer is a novel strategy for growing high-quality crystalline thin films via weak epitaxy growth. This work shows that a designed dual inducing layer can address critical hole injection challenges in crystalline OLEDs.

A transparent YPO₄:Eu²⁺ glass-ceramic scintillator with high XEL intensity and a high spatial resolution of 18 lp mm⁻¹ is reported.

Ti⁴⁺ doping not only increases the emission intensity and purity of emitted red light but also enhances the stability of emission intensity and chromaticity against temperature variation in Ga₂O₃:0.035Eu³⁺/yTi⁴⁺ phosphors.

The synergistic effect of negative thermal expansion and charge compensation mechanisms allows Eu³⁺ ions to retain high luminescence intensity even at elevated temperatures, exhibiting remarkable thermal stability.

Electro-optic coefficients of up to 234–312 pm V⁻¹ and glass transition temperatures as high as 118–160 °C were achieved in cross-linked films QLD1 and QLD3–6.

Using ultraviolet photoelectron spectroscopy to determine interfacial energy levels between the crystalline light-emitting layer and the amorphous electron transport layer the efficiency of crystalline organic light-emitting diodes can be improved.

Embedding hot exciton nanoaggregates with TTA dopants into an emitting layer crystalline host matrix is effective for fabricating high-efficiency crystalline OLEDs.

Steric hindrance effects, MR-TADF, and TSCT have been integrated into non-conjugated polymers to achieve highly efficient MR-TADF emission with near-unity PLQY. Solution-processed OLEDs achieve a maximum external quantum efficiency (EQE) of 12.7%.

We demonstrated reconfigurable artificial synapses using a floating-gate-type organic antiambipolar transistor. This feature highlights the potential for a brain-like computing architecture that surpasses current von Neumann systems.

We thoroughly assess here the recently developed (SOS1-)PBE-DH-INVEST double-hybrid density functionals using the NAH159 dataset, in the search of a robuts and accurate method for S₁–T₁ gaps.

Antimony halide perovskites, with the orbit coupling of p–π orbits and hydrogen bond-assisted charge transport, realize an ultra-high PLQY value of 99.2% through short-term high-pressure treatment.

Incorporating AIE and HLCT moieties, a blue fluorescence emitter (CF₃-PPI-TPE) with AIE and HLCT properties was obtained. It exhibits obvious color changes under acid gas, and shows narrow emission in OLED applications.

Substituting Sc³⁺ for Al³⁺ in Pr³⁺-doped Lu_1.5Y_1.5Al_5−xSc_xO₁₂ crystals enhances the Pr³⁺ emission across the UV-Vis-NIR spectral range. This enhancement is attributed to an efficient Sc³⁺ → Pr³⁺ energy transfer and increased structural disorder.

The superelastic partially rGO aerogel with multi-stage pores exhibits a remarkable RL_min of −67.89 dB and an expanded EAB of 7.72 GHz, combining outstanding mechanical properties, hydrophobicity, thermal insulation and piezoresistive sensing.

Through in situ self-assembly, a deep-blue fluorene-based conjugated polymer circularly polarized photo-luminescence is enhanced to g_lum −0.21. The self-assembly process PLED improves performance and resulting CP-EL with g factor of −0.028.

The cationic CPE-Br outperforms the anionic CPE-K in pseudocapacitor applications, delivering higher capacitance, improved rate performance, and faster ion diffusion, attributed to suppressed self-doping and enhanced anion accessibility.

Er³⁺/Yb³⁺/Sr²⁺ intercalates in L-Ta₂O₅, realizing a superlattice structure. The green UCL integrated intensity of L-Ta₂O₅:Er³⁺/Yb³⁺/Sr²⁺ was 1.53 and 3.14 times greater than that of β-NaYF₄:Er³⁺/Yb³⁺ and NaY(WO₄)₂:Er³⁺/Yb³⁺, respectively.

Nb₂O₅ MPA-based PEC PDs exhibit an R of 146.44 mA W⁻¹ under weak 254 nm light, an ultrahigh rejection ratio of 22 306, and good UV photoresponse in acidic and alkaline electrolytes and simulated seawater at 5, 25 and 45 °C.

TiN nanocrystalline films fabricated by magnetron sputtering exhibit ultrafast saturable absorption in the near-infrared regime, enabling stable mode-locked pulse generation in an Er-doped fiber laser.

A new oligomer XY-1 was introduced to construct a PTB7-Th-2F:2%XY-1:Y6-based ternary device. The optimized device exhibits a record power conversion efficiency of 14.49% in opaque and 12.00% in semi-transparent devices.

The Bi–Al pre-binding precisely regulates the BACs in Bi-doped glasses, enhancing the concentration quenching threshold of Bi-doped glasses for NIR emission >3.0 mol% and their photostability in specific Bi content and various alkaline earth ions.

The shielding effectiveness and underlying mechanism are presented, demonstrating the tunable EMI response of the conducting ceramic composite (CCC) system.

We developed a self-powered photodetector using a SAM interlayer for defect passivation and electron blocking. The device shows low dark current, an on/off ratio of 7.6 × 10⁶, detectivity of 2.74 × 10¹² Jones under 365 nm light.

The study on Bi-doped LiYGeO₄ PersL reveals a ∼6.05 eV direct bandgap, supported by hybrid DFT calculations. Li loss during synthesis was confirmed by elemental analysis. Excitation to the MMCT enables UV PersL (peaked @ 358 nm) for up to 7 hours.

High-permittivity elastomers were made by grafting sulfolane groups onto polysiloxane. Tuned polarity, thin films, and UV cross-linking yielded DEAs with 7.2% lateral strain at 14 V μm⁻¹, enabling reliable low-voltage soft stack actuators.

FeSe₂/MoSe₂ heterointerface engineering tailors built-in field and interfacial coupling, enabling high-rate Na⁺ storage (391.6 mAh g⁻¹) and cycling stability.

The van der Waals material Fe₃GaTe₂ exhibits long-range ferrimagnetism above room temperature as evidenced by temperature dependent neutron diffraction.

Systematic investigation on the ring-size-dependent optoelectronic and electric properties of hexa-n-dodecyloxy-substituted [n]DBA derivatives reveals enhanced hole mobility in antiaromatic systems.

Modulated by chalcogen effect, polymer SeDPP-Te exhibited high hole mobility and shortwave infrared phototransistor performance, with photoresponsivity, photosensitivity and specific detectivity up to 34.0 A W⁻¹, 27.6 and 2.76 × 10¹¹ Jones.

Organic field-effect transistors were fabricated using thieno[2,3-b]thiophene derivatives with alkyl side chains. The resulting devices exhibited well-defined surface morphology, superior air stability, and a notable hole mobility of 0.42 cm²/V s.

We report metal-free pyroelectric materials with tunable pyroelectric via molecular design. The top candidate enables self-powered X-ray detection through photo-pyroelectric effects. This work advances the development of optoelectronic materials.

Ir(III) carbene complexes bearing bulky 2-xylenyl substituents were synthesized and utilized in OLED fabrication. The f-ct9ax-based hyper-OLED exhibited narrowband blue emission with a maximum EQE of 31.9%, and an EQE of 20.9% at 1000 cd m⁻².

A strategy to boost the emission wavelength redshift and improve the photoluminescence quantum yield (PLQY) of coal pitch-derived CDs is proposed. The obtained CDs emit yellow light and exhibit a PLQY of 34%, showing potential for LED applications.

Two indandione-terminated quinoidal compounds with fused hexacyclic thiophene-thieno[3,2-b]thiophene-thiophene as the core have been synthesized. The two compounds showed low bandgap and electron transport behaviour.

We designed a solar-blind UV photodetector based on In-doped Ga₂O₃ arrays that demonstrates competitive performances with excellent photoelectric response times of 24.8 ms (rise) and 27.6 ms (decay), and high detectivity (1.55 × 10¹⁴ Jones).

Despite significant advancements in the use of composite materials derived from metal–organic frameworks (MOFs) for electromagnetic wave absorption, achieving the inherent electromagnetic shielding properties of MOFs remains challenging.

Rational ligand engineering of AIE-active iridium(III) complexes for tunable emission, reversible mechanochromism and anti-counterfeiting.

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

Schematic diagram of EMWs absorption mechanism of PVDF-based composite fabrics.

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

An innovative water contact mode and PiG film architecture designed to create an ultra-bright underwater laser-driven light source.

Wasted biomass upcycling is an environmentally friendly approach that contributes to protecting the Earth.