Themed collection Editor’s choice collection: luminescent metal halides

Zhiguo Xia, Associate Editor for Journal of Materials Chemistry C and Materials Advances, introduces this Editor's choice collection on ‘luminescent metal halides’.

Inorganic halide perovskites (IHPs) have provoked intense research efforts because of their superior stability, excellent optoelectronic properties, cost-effectiveness, and striking optoelectronic applications.

A systematic review of halide perovskites as photocatalysts concerning the photoreduction mechanism, reductants and products, structures and performances, as well as the exploration efforts on their composites for further improvements.

Layered hybrid perovskites incorporating organic moieties with enhanced functionalities within the perovskite scaffold enable the development of advanced multifunctional materials.

We summarize the recent utilizing bulk perovskites for photon upconversion in the solid-state, including areas of optimization and future promise.

The thermal properties of metal-halide perovskites are reviewed with respect to experimental findings, theoretical insights, dimensionalities, and phase transitions.

This review paper provides an overview of recent development in detectors based on perovskite single crystals and the challenges they pose.

Blue-emissive Cs₃Cu₂I₅ and yellow-emissive CsCu₂I₃ microscale crystals were synthesized by a facile supersaturated recrystallization method at room temperature, and a stable WLED was demonstrated by using both materials as down-conversion phosphors.

The Pb substitution in quantum dots (PQDs) with lesser toxic metals has been widely searched to be environmentally friendly, and be of comparable or improved performance compared to the lead-perovskite.

Metal halide perovskites have arisen as a new family of semiconductors for radiation detectors due to their high stopping power, large and balanced electron–hole mobility-lifetime (μτ) product, and tunable bandgap.

A novel 2D lead-free perovskite showing stability in water and providing efficient hydrogen photogeneration.

Drop on demand inkjet printing of monolithic mesoscopic carbon-based perovskite solar cells is demonstrated, highlighting the potential of customizable solar cells for aesthetic indoor and outdoor photovoltaic deployment.

Herein, we present for the first time on the synthesis and luminescence mechanism of two chiral perovskits with white-light emission and an achiral perovskite featuring a spectral blueshift.

Huge mechano-electrical performance obtained from net-like PVDF composites infiltrated with methylammonium lead iodide under vertical ultrasonic vibration, without additional poling.

A scalable method has been developed to fabricate large size Cs₃Bi₂I₉ wafer by hot-pressing ball-milled Cs₃Bi₂I₉ powder. The wafer shows near-intrinsic properties and good optoelectronic properties to achieve a detector with low X-ray detection limit.

The obtained ZJU-28⊃CsPbX₃ crystals exhibit giant two-photon action cross-section and photostability enhancement due to the effects of confinement, passivation and separation derived from ZJU-28 frameworks.

We propose and solve a phase transition model describing ordering of the FA cations in FAPbX₃ hybrid perovskites.

A facile and convenient room-temperature method for synthesizing Na⁺-ion-doped CsPbBr₃ QDs was developed. The photoluminescence performance is improved and high-performance QLED devices are prepared.

A white-emissive metal halide (C₆H₈N)₆InBr₉ with inferior luminescence due to a severe thermal quenching effect has been developed. By doping with Sb³⁺ ions, this effect was effectively suppressed, improving the luminous efficiency up to 71.84%.

0D Mn²⁺-based bromides with [MnBr₄]²⁻ tetrahedral and [Mn₃Br₁₂]⁶⁻ octahedral units are designed, which aims at clarifying the relationship between the coordination units of Mn²⁺ and tunable emissions.

Solid-state luminescent gas sensor based on CsPbBr₃ NCs embedded in a molecularly imprinted polymer (MIP) with fast response and high selectivity to nitro compounds.

A 1-D Cu(II)-based perovskite (C₅H₈N₃)[CuCl₃], with gap energy “E_g” of 2.21 eV, has been successfully investigated as a good UV–Vis–NIR absorber. The magnetic analysis suggests that this material can be described by the model of S = 1/2 AFM dimers.

The extrinsic Pb⁰ interfacial trap states induce strong Fermi-level pinning at metal/CH₃NH₃PbI₃ interfaces. This is due to the interfacial reaction between the deposited metals and iodine from CH₃NH₃PbI₃.

We examine the role of surface passivation on carrier trapping and nonlinear recombination dynamics in hybrid metal-halide perovskites by means of excitation correlation photoluminescence (ECPL) spectroscopy.

By modulating the glass network topology, the photoluminescence intensity of CsPbBr₃ QD-doped glasses can be enhanced by 8 times and the nonlinear absorption response can change from saturable absorption to reverse saturable absorption.

The electrochemical performance of 2-dimensional hybrid perovskite electrodes for Li-ion batteries are investigated using a high-molarity electrolyte. The effect of changing the halide content and layering structure is systematically explored.

Present 0D Te(IV)-chloride organic hybrid luminescent material shows broad, yellow-orange, strong room temperature emission (PLQY ∼15%), ambient/thermal stability, and excitation features in the visible (445 nm) allowing its use as phosphor material.

Non-catalytic chemical vapor deposition growth of CsPbX₃ (X = Br, Cl) nanowires on both amorphous and crystalline substrates through nucleation and physiological transformations: ‘nanoparticles → capsules → dumbbells → coalescence of dumbbells → NWs’.

A family of eight new halotellurate(IV) compounds displaying tunable band gap energies as a function of noncovalent interactions.

High-performance optoelectronic synaptic transistors are reported with a long-term memory by using organic–inorganic halide perovskites and oxide semiconductors.

Visible to NIR inorganic perovskite with reduced lead and high PV performance.

Two new hybrid metal halides (PMA)₃BiBr₆ and (PMA)₃SbBr₆ are obtained, and upon light excitation both exhibit broadband emission.

Inorganic perovskite/ZnO heterojunction photodetector with UV-visible dual-band detection capability.