Excitation-dependent emission and highly efficient near-infrared luminescence in CsNaScCl double perovskite Sb-Yb alloying for multifunctional photoelectric applications.

A novel Sb-Yb co-doped CsNaScCl double perovskite with multimode luminescence and efficient excitation-dependent emission is proposed. Upon Sb-Yb co-substitution in CsNaScCl, NIR emission at 995 nm is greatly enhanced. A new STE emission peaking at 570 nm appears.

Mn-Doped MCdCl (M = CHNH, CHN, and CHN) Layered Hybrid Perovskite and Its Flexible Film Based on Simple Mechanochemical Synthesis.

Layered hybrid perovskites show significant advantages in the field of optoelectronics. However, the low quantum efficiency and complex preparation methods limit their applications. In this work, we developed a series of perovskite powders with a two-dimensional (2D) layered structure of organic-inorganic hybrid metal halides MCdCl:%Mn (M = CHNH, CHN, CHN) via facile mechanochemical methods.

Highly efficient near-infrared solid solution phosphors with excellent thermal stability and tunable spectra for pc-LED light sources toward NIR spectroscopy applications.

Near-infrared (NIR) luminescent materials have attracted wide research interest due to their unique photophysical properties for designing NIR light-emitting diodes (NIR LEDs). Here, a series of Cr-activated NIR-emitting solid solution phosphors, GdLu(AlSc)(BO):0.01Cr (GLASB:Cr) ( = 0 to 0.

High-Quality CsCuI@PMMA Scintillator Films Assisted by Multiprocessing for X-ray Imaging.

In recent years, novel metal halide scintillators have shown great application potential due to their tunable emission wavelength, high X-ray absorption, and high luminescence efficiency. However, poor stability and complex device packaging remain key issues for metal halide scintillators, making it difficult to achieve high-resolution and flexible X-ray imaging applications. To address the above issues, a multiprocessing strategy was introduced to prepare CsCuI@PMMA scintillator films for long-term stable application, mainly undergo different annealing treatments to make CsCuI crystals to accurately nucleate and then grow in-situ in the PMMA matrix.

A super water-resistant MXene sponge flexible sensor for bifunctional sensing of physical and chemical stimuli.

Flexible wearable sensors with multifunctional features have attracted great interest in various applications such as disease diagnosis, environmental detection and healthcare monitoring. However, it is still a challenge to achieve a multifunctional sensor with super water resistance without compromising the overall performance of the sensing material. Here, we developed a 3D bifunctional flexible sensor based on an MXene melamine sponge (MS) through a simple and effective ultrasonic mixing process and a further vacuum annealing process.

Highly Stable Orange-Red Long-Persistent Luminescent CsCdCl :Mn Perovskite Crystal.

Halide perovskite has been widely studied as a new generation of photoelectronic materials. However, their thermal and humidity-induced emission quenching have greatly limited their utility and reliability. Here, we report a hexagonal Mn -doped CsCdCl perovskite crystal that possesses stable photoluminescence (PL) at both high temperature and humidity.

Post-doping induced morphology evolution boosts Mn luminescence in the CsNaBiCl:Mn phosphor.

As we know, defects caused in the synthetic process of metal halide perovskite are the most difficult to overcome, and greatly limit their photoelectric performances. Herein, a post-doped strategy was utilized to achieve an interesting morphology evolution from a standard octahedron to a snowflake-like sheet during the Mn-doped CsNaBiCl process, which realizes the obvious photoluminescence quantum efficiency (PLQY) enhancement of the CsNaBiCl:Mn phosphor. This surprising evolution is ascribed to the morphology collapse and reconstruction induced by Mn exchange.

Novel Cyan-Green-Emitting Bi-Doped BaScOF, R (R = Na, K, Rb) Perovskite Used for Achieving Full-Visible-Spectrum LED Lighting.

Cyan-emitting phosphors are important for near-ultraviolet (NUV) light-emitting diodes (LEDs) to gain high-quality white lighting. In the present work, a Bi-doped BaScOF, R (R = Na, K, Rb) perovskite, which emits 506 nm cyan-green light under 360 or 415 nm excitation, is obtained via a high-temperature solid-state method for the first time. The obtained perovskite shows improved photoluminescence and thermal stability due to the charge compensation of Na, K, and Rb co-doping.

Enhancing Structural Rigidity via a Strategy Involving Protons for Creating Water-Resistant Mn-Doped Fluoride Phosphors.

The poor water resistance property of a commercial Mn-activated narrow-band red-emitting fluoride phosphor restricts its promising applications in high-performance white LEDs and wide-gamut displays. Herein, we develop a structural rigidity-enhancing strategy using a novel KHF:Mn precursor as a Mn source to construct a proton-containing water-resistant phosphor K(H)TiF:Mn (KHTFM). The parasitic [HMnF] complexes in the interstitial site from the fall off the KHF:Mn are also transferred to the KTiF host by ion exchange to form KHTFM with rigid bonding networks, improving the water resistance and thermostability of the sample.

Color-tunable photoluminescence and energy transfer of (Tb Mn )Al(Al Si )O:Ce solid solutions for white light emitting diodes.

(Tb Mn )Al(Al Si )O:Ce solid solution phosphors were synthesized by introducing the isostructural MnAl(SiO) (MAS) into TbAlO:Ce (TbAG). Under 456 nm excitation, (Tb Mn )Al(Al Si )O:Ce shows energy transfers (ET) in the host, which can be obtained from the red emission components to enhance color rendering. Moreover, (Tb Mn )Al(Al Si )O:Ce ( = 0-0.