CsAc-Mediated Dynamic Reconstruction of Chloride Perovskite Films for High-Performance Self-Powered Near-UV Photodetectors.

Methylammonium lead chloride perovskite (MAPbCl), with its wide bandgap of ∼3 eV, exhibits unique advantages for near-UV to UV optoelectronic devices. However, the fast crystallization kinetics and significant solubility differences of MAPbCl precursors in solvents cause discontinuous films with high surface defect densities, severely limiting device performance. This study introduces a solution mediated dissolution recrystallization strategy to address the aforementioned issues, namely, employing a CsAc/methanol solution to dynamically reconstruct preformed MAPbCl films.

InP Quantum Dots with a Strain-Engineered Gradient Shell for Enhanced Optical Performance and Stability.

InP quantum dots have emerged as a promising ecofriendly alternative to cadmium-based QDs for next-generation display applications. However, red-emitting InP QDs synthesized via aminophosphine precursors still suffer from broad emission spectra and limited stability. In this study, we present a strain-engineered InP/ZnSe/ZnSeS/ZnS QD structure featuring a gradient alloyed ZnSeS shell that effectively mitigates lattice mismatch, reduces strain accumulation, and enhances shell uniformity.

Physical models and numerical modeling for 280 nm AlGaN-based emission-and-detection dual functional integrated devices by managing hole transport and recombination.

In this work, physical models for 280 nm AlGaN-based light emitting diode (LED) with monolithically integrated photodetector (PD) having the same multiple quantum wells (MQWs) structure have been established for the first time, with the aid of which, numerical calculations have been studied. Asymmetric MQWs have been proposed to improve the optoelectronic coupling efficiency, i.e.

Chiral Grayscale Imaging Based on a Versatile Metasurface of Spin-Selective Manipulation.

Metasurface display, a kind of unique imaging technique with subwavelength scale, plays a key role in data storage, information processing, and optical imaging due to the superior performance of high resolution, miniaturization, and integration. Recent works about grayscale imaging as a typical metasurface display have showcased an excellent performance for optical integrated devices in the near field. However, chiral grayscale imaging has been rarely elucidated, especially using a single structure.

Glasses-free 3D LED display based on a radial barrier.

Conventional glasses-free 3D displays have a limitation of an optimum viewing distance (OVD). This limitation is unfriendly for multi-user scenarios, with users at varying viewing distances. This article introduces a glasses-free 3D display method designed to support multi-user viewing from different distances.

Comparative study of photoluminescence dynamics of CdSe quantum dots on glass and ITO.

This study investigates the photoluminescence (PL) dynamics of CdSe quantum dots (QDs) on indium tin oxide (ITO) substrates under various excitation intensities to understand the impact of QD charging on PL. The analysis reveals that under low pump fluence, approximately 75% of the QDs in the assembly are negatively charged due to direct contact with the ITO substrate, resulting in a shortened average PL lifetime and weakened PL intensity. Under high pump fluence conditions, the charging percentage is further increased by the photo charging effect, leading to the undesirable depletion of the biexciton state through the accelerated non-radiative Auger process.

Microalgal density assessment based on quantum-dot light-emitting diodes and intelligent image edge detection.

This study proposes an approach involving image capture, recognition, and processing using quantum dots for light conversion, which emit blue, green, orange, and red light. Microalgae species of Nannochloropsis sp. and Chaetoceros sp.

Discovery and Prediction on a Family of Hard Superconductors with Kagome Lattice: Compounds.

The search for and design of superconductors with both Kagome lattice and hardness is a challenging and frontier research topic. This work utilizes structure predictions to discover the Kagome lattice in NaSi_6/ phase of NaSi (, = 1-3). For a comprehensive understanding of _6/, other atoms such as = Li, Na, Cs and = B, Si, Ge are included.

Phononic crystals with decoupled different defects enhance energy localization and harvesting performance.

Utilizing phononic crystals (PnCs) to enhance the performance of piezoelectric energy harvesting (PEH) devices is essential for addressing the self-power challenges of low-power devices. Building on prior research concerning incomplete line defect PnCs, this study presents a PnC designed with decoupled defects (i.e.

Exceptionally high brightness and long lifetime of efficient blue OLEDs for programmable active-matrix display.

Blue phosphorescent OLEDs (Ph-OLEDs) have long faced critical challenges in efficiency, stability and brightness, which are crucial for advanced display. Herein, we introduce two novel Ir(III) emitters featuring a 3,6-di(tert-butyl)-9H-carbazolyl (tBuCz) substituted tridentate carbene pincer ligand, significantly improving efficiency and stability. The tBuCz-m-CF3 and tBuCz-p-CF3 complexes are designed to enhance steric encumbrance and minimize exciton accumulation.

-mediated endoplasmic reticulum associated degradation inhibition suppresses proliferation and migration in Huh7 hepatocellular carcinoma cells.

Background: Proteins play a central role in regulating biological functions, and various pathways regulate their synthesis and secretion. Endoplasmic reticulum-associated protein degradation (ERAD) is crucial for monitoring protein synthesis and processing unfolded or misfolded proteins in actively growing tumor cells. However, the role of the multiple ERAD complexes in liver cancer remains unclear.

An achromatic metasurface waveguide for augmented reality displays.

Augmented reality (AR) displays are emerging as the next generation of interactive platform, providing deeper human-digital interactions and immersive experiences beyond traditional flat-panel displays. Diffractive waveguide is a promising optical combiner technology for AR owing to its potential for the slimmest geometry and lightest weight. However, severe chromatic aberration of diffractive coupler has constrained widespread adoption of diffractive waveguide.

Micromolecule Postdeposition Process for Highly Efficient Inverted Perovskite Solar Cells.

Inverted perovskite solar cells (PSCs) have achieved great development, contributed by the advance of self-assembled monolayer (SAM) hole-transporting layers (HTLs) due to their distinctive molecular designability. However, SAM HTLs still present challenges of achieving a compact and ordered surface, resulting in vacancies and defects at the interface as well as adversely affecting the growth of perovskites. In this work, we propose a micromolecule postdeposition process to design the SAM HTL interface and form high-quality perovskites to achieve highly efficient inverted PSCs.

Submicron quantum dot light-emitting diodes enabled by pixelated topological meta-mirror.

As a highly competitive display technology, the realization of pixelated full color quantum dot light emitting diodes (QLEDs) is an indispensable step for high resolution display. Meanwhile, with the rise of near eye display, a submicron pixel size is required for a high-resolution display within a small area less than 1 inch. However, the realization of submicron full color quantum dot pixels by direct patterning is still a big challenge.

Perioperative tislelizumab plus chemotherapy for locally advanced gastroesophageal junction adenocarcinoma (NEOSUMMIT-03): a prospective, nonrandomized, open-label, phase 2 trial.

This prospective, nonrandomized, open-label phase 2 trial (Chinese Clinical Trial Registry, ChiCTR2200061906) aimed to evaluate the effectiveness of adding the PD-1 antibody tislelizumab to perioperative chemotherapy in patients with locally advanced gastroesophageal junction adenocarcinoma (GEJA). This study enrolled patients with GEJA clinically staged as cT3-4aNanyM0 or cT1-2N+M0 from October 2022 to June 2023. Eligible patients were administered three preoperative and five postoperative 3-week cycles of treatment with PD-1 antibody tislelizumab plus SOX (S-1 and oxaliplatin) regimen.

Shape-tailored semiconductor dot-in-rods: optimizing CdS-shell growth for enhanced chiroptical properties the rationalization of the role of temperature and time.

Colloidal chemistry provides an assortment of synthetic tools for tuning the shape of semiconductor nanocrystals. To fully exploit the shape- and structure-dependent properties of semiconductor nanorods, high-precision control on growth and design is essential. However, achieving this precision is highly challenging due to the high temperatures (>350 °C) and short reaction times (<8 minutes) often required for these reactions.

Low-threshold anisotropic polychromatic emission from monodisperse quantum dots.

Colloidal quantum dots (QDs) are solution-processable semiconductor nanocrystals with favorable optoelectronic characteristics, one of which is their multi-excitonic behavior that enables broadband polychromatic light generation and amplification from monodisperse QDs. However, the practicality of this has been limited by the difficulty in achieving spatial separation and patterning of different colors as well as the high pumping intensity required to excite the multi-excitonic states. Here, we have addressed these issues by integrating monodisperse QDs in multi-excitonic states into a specially designed cavity, in which the QDs exhibit an anisotropic polychromatic emission (APE) characteristic that allows for tuning the emission from green to red by shifting the observation direction from perpendicular to lateral.

Low-threshold surface-emitting colloidal quantum-dot circular Bragg laser array.

Colloidal quantum dots (CQDs) are attractive gain media due to their wavelength-tunability and low optical gain threshold. Consequently, CQD lasers, especially the surface-emitting ones, are promising candidates for display, sensing and communication. However, it remains challenging to achieve a low-threshold surface-emitting CQD laser array with high stability and integration density.

Effect of incomplete line defect size on energy localization and harvesting in phononic crystals.

The high electrical output performance of the phononic crystal (PnC)-based piezoelectric energy harvesting (PEH) system is of great research value in self-powered applications. This work presents the effect of incomplete line defect size on elastic wave energy localization and harvesting. The results show that for a given 7 × 5 supercell when the incomplete line defect reaches the second to sixth layer, the energy localization and harvesting performance show a changing trend of first increasing and then decreasing; when the incomplete line defect reaches the 4th, 5th, 3rd, 2nd, and 6th layers of the supercell, respectively, the performance of PEH systems shows a trend from large to small.

Size-dependent competitive effect between surface recombination and self-heat on efficiency droop for 250 nm AlGaN-based DUV LEDs.

In this work, electrical and optical performances for 250 nm AlGaN-based flip-chip deep ultraviolet light emitting diodes (DUV LEDs) with different chip sizes are studied. Reduced chip size helps increase the light extraction efficiency (LEE) with the cost of increased surface nonradiative recombination. Nevertheless, a thin p-AlGaN layer of 10 nm can manage current distribution while suppressing surface recombination and reducing light absorption simultaneously, which results in the increased optical power density.

Inverted All-Inorganic Nanorod-Based Light-Emitting Diodes via Electrophoretic Deposition.

High performance and high stability in all-inorganic solution processed nanocrystal-based light-emitting diodes (LEDs) are highly attractive for large area devices compared to organic material-based LEDs. In this work, an inverted all-inorganic LED structure is designed to have an easy integration with thin-film transistors. Adopting robust inorganic materials such as Ni O nanoparticle films as a hole transport layer (HTL) is beneficial for the performance of LED.

Structural and Functional Differences in Small Intestinal and Fecal Microbiota: 16S rRNA Gene Investigation in Rats.

To compare the differences in floral composition and functions between the two types of microbiota, ileal contents and feces were collected from Sprague Dawley (SD) rats fed in a conventional or specific-pathogen free (SPF) environment and rats fed a high-fat diet (HFD), and the V3-V4 region of the 16S ribosomal ribonucleic acid (rRNA) gene in these rats was then amplified and sequenced. Compared with feces, about 60% of the bacterial genera in the ileum were exclusive, with low abundance (operational taxonomic units (OTUs) < 1000). Of bacteria shared between the ileum and feces, a few genera were highly abundant (dominant), whereas most had low abundance (less dominant).