Abstract Assembling thermoelectric modules into fabric to harvest energy from body heat could one day power multitudinous wearable electronics. However, the invalid 2D architecture of limits application in thermoelectrics. Here, we make valid woven out fibers producing an unobtrusive working module. Alternately doped carbon nanotube wrapped with acrylic are π-type modules. Utilizing elasticity originating interlocked modules, stretchable 3D generators without substrate can be made enable...

Replacing traditional luminous silicone or resins with phosphor in ceramics (PiCs) as color converters has been proposed an efficient way to improve thermal stability of high-power white light-emitting diodes (WLEDs). However, excessive light scattering existing PiCs results enormous phosphor-converted losses, which makes the luminosity current less and means that they can only be used devices working reflective mode. By introducing nano wave plate structuring Rayleigh scattering,...

Composite phosphor ceramics (CPCs) have found extensive applications in high-power, high-brightness LD lighting, primarily attributed to their superior thermal conductivity, stability and microstructural tailorability. However, the high sintering temperatures and...

Narrowband ultraviolet (UV) photodetectors are highly desired in multiple areas. Photodetectors based on organic-inorganic nanocomposites offer high sensitivity, widely adjustable response range, light weight, and low-temperature solution processibility. However, the broad absorption range of organic inorganic semiconductor materials makes it difficult to achieve a narrowband detection feature for nanocomposite photodetectors. In this work, thin films containing wide band gap conjugated...

Abstract Phosphors‐in‐glass (PiG), which serves as a potential bi‐replacement of both phosphors and organic encapsulants in high‐power white light‐emitting diodes (WLEDs), has captured much attention due to its high thermal stability excellent luminescent properties. However, the high‐temperature sensitivity chemical reactions between with glass matrix, variety phosphors, especially red could be hardly dispersed into without quenching decomposition, greatly limits improvement color rendering...

Highly transparent silica glass was prepared from mesoporous SBA ‐15 powders at low temperature using Spark Plasma Sintering. It found that the combined effect of pressure and resulted in collapse porous structure transformation to glass. A sinterability enhancement mechanism involving generation incremental surface area pore during sintering process proposed interpret fully densification temperature.

Abstract Fine‐grained and dense highly transparent Y 2 O 3 ceramics have been successfully prepared using high sintering activity mesoporous powders without any additive by spark plasma (SPS). The influences of the temperature on microstructure, density, optical, mechanical properties SPS‐sintered were studied in detail. As results, optimal with relative density 99.90% fine average grain size 140 nm obtained at a low 1140°C moderate load pressure 60 MPa for 5 min. Meanwhile, 1 mm thickness...

Optimized Y 2 O 3 -YAG:Ce composite phosphor ceramics with designed microstructures were prepared and well suited for solid-state laser lighting high power brightness.

Abstract In this study, the sintering behaviors of a series mesoporous silica (FDU‐12, SBA‐15, MCM‐41, and nanoparticles) microporous zeolite (ZSM‐5) using spark plasma (SPS) technology were investigated. Highly transparent glass was prepared at low temperature from all powders. particular, FDU‐12 type could be fully densified an ultralow (910°C). It is suggested that collapse ordered mesostructures during SPS process dependents on large pore size/pore wall thickness ratio, appropriate...

Silica glasses dispersed with Pt nanoparticles and Ag are derived from solid‐state sintering of mesoporous silica SBA ‐15 encapsulated nanoparticles, respectively. Using powders for is a facile method to lower synthesis temperature glass making efficiently disperse noble metal in matrix. The included still play their functional roles impacting on optical properties the products prepared by this novel method. exhibits brown color due interband electron transition nanoparticles. coloring...

Through the order–disorder transition process of zeolites, bismuth‐doped zeolite‐derived silica glasses with broadband near‐infrared ( NIR ) photoluminescence have been successfully prepared by spark plasma sintering SPS ). The samples were characterized X‐ray diffraction, UV ‐vis, photoluminescence, and fluorescence lifetime. results showed that as‐prepared possessed favorable luminescence. emission (peaked at ~1140 nm) intensity decreased increasing bismuth doping concentration when...

Abstract Nanocrystalline mullite glass‐ceramics have been regarded as an ideal optical window material due to its excellent thermal shock resistance, low dielectric constant, and perfect high‐temperature strength. However, the fabrication of high‐purity at a temperature still faces great challenges. Herein, highly transparent prepared ultra‐low (~800°C) via spark plasma sintering (SPS) EMT‐type zeolite. Unlike made by conventional process, one obtained in this study present high transparency...

Abstract Monolithic luminescent glass‐ceramic (GC) embedded with fluoride‐based nanocrystals (NCs) has drawn much attention as it is stable and possesses long fluorescent lifetime, while only small partial of optically active ions could enter the fluoride NCs prepared by conventional crystallization process. In this work, YF 3 :Eu 3+ GCs have been controllably synthesized Spark Plasma Sintering at a relatively low sintering temperature (960°C) within 10 minutes. The GC samples show typical...

The inevitable defects in conventional II–VI semiconductors, introducing pathways for the non-radiative recombination, substantially lower photoluminescence (PL) quantum yield. Although considerable progress has been made toward eliminating defect-induced PL quenching, low stability that remained after surface passivation or only a small proportion of could be modified via other strategies dramatically limits whole yield solid-state luminescent materials. In this work, we propose "defect...

Abstract Mn 2+ activated glass‐ceramic (GC) has received tremendous attention in the exploration of luminescent materials for solid‐state lighting due to high stability, broad red emission, and low toxicity. However, doped ions still suffer from oxidation uncontrollable migration during melting process conventional preparation techniques, which is detrimental luminescence performance. Herein, transparent ‐doped mullite GCs have been prepared at temperature (∼850°C) via spark plasma sintering...

ABSTRACT Silver nanoparticles (Ag NPs) have excellent third‐order nonlinear optical properties but it is still difficult to obtain silica glass containing Ag NPs with homogenous dispersion and small particle size. Herein, homogenously distributed in its matrix was derived from sintering a famous type of mesoporous (FDU‐12) encapsulated NPs/FDU‐12) through Spark Plasma Sintering (SPS) technique. Benefited the low‐temperature property NPs/FDU‐12 powders (~930°C within 5 min), can be directly...

A facile and economical one-pot strategy has been developed for the synthesis of water-solute CdTe CdTe/ZnS core/shell quantum dots (QDs) using tellurium dioxide (TeO2) as a precursor thioglycolic acid (TGA) stabilizer without any pre-treatment inert atmosphere protection. As-synthesized QDs were characterized by transmission electron microscopy (TEM), high-resolution (HRTEM), diffraction spectroscopy (EDS), X-ray powder (XRD), UV-vis photoluminescence (PL). The spherical particles uniformly...

The development of multi-level anti-counterfeiting techniques is great significance for economics and security issues, particularly the newly emerged temporal-domain based on lifetime coding. However, intricate reading methods required to obtain temporal-level information are inevitably cumbersome expensive, which greatly limits practical applications these techniques. Herein, we report a novel, unclonable time-domain strategy first time, achieved using photo-responsive ZnSe:Mn/ZnS quantum...

Due to high transmittance, excellent chemical stability, ease of machining, and other advantages, silicon-based oxide glass is considered be an ideal matrix material.By introducing different lighting dopants, the optical with properties has been widely used in many fields.However, preparation technologies are facing new challenges because these volatile unstable dopants which easy decomposed.This review introduces development status techniques light-emitting containing bismuth ions, quantum...