Particle deposit morphologies that resulted from evaporating ink-jetted microdroplets were controlled by varying the ink compositions and concentrations. The was a well-dispersed aqueous dispersion of monodisperse silica microspheres. Silica particles suspended in microdroplet undergo self-assembly upon evaporation solvent. A ringlike self-assembled produced water-based ink, while uniform two-dimensional monolayer with well-ordered hexagonal structure obtained mixed-solvent-based inks....

Ink-jet printing is a method for directly patterning and fabricating patterns without the need masks. To achieve this, fluids used as inks must have capability of being stably accurately printed by ink-jetting. We investigated inter-relationship between ink-jet printability physical fluid properties monitoring droplet formation dynamics. The was determined using inverse (Z) Ohnesorge number (Oh) which relates to viscosity, surface tension, density fluid. experimentally defined printable...

Ga doping in indium zinc oxide (IZO)-based amorphous-oxide semiconductors (AOSs) promotes the formation of oxide-lattice structures with oxygen vacancies at low annealing temperatures, which is essential for acceptable thin-film-transistor performance (see figure). The mobility dependence on temperature and AOS composition are analyzed chemical role clarified, as required solution-processed, low-temperature-annealed AOSs. Detailed facts importance to specialist readers published "Supporting...

Abstract With the aim of preparing a high performance conductive ink, we sought to control surface chemistry Cu nanoparticles so as minimize oxidation. Specifically, oxide layer on synthesized in ambient atmosphere was minimized by adjusting molecular weight poly( N ‐vinylpyrrolidone) capping molecules, confirmed resolution transmission electron microscopy and X‐ray photoelectron spectroscopy analyses. In addition, demonstrate that minimizing thickness layer, granular films with good...

We present an indium-free transparent conducting composite electrode composed of silver nanowires (AgNWs) and ZnO bilayers. The AgNWs form a random percolating network embedded between the layers. unique structural features our ZnO/AgNW/ZnO multilayered allow for novel with unprecedented excellent thermal stability (∼375 °C), adhesiveness, flexibility as well high electrical conductivity (∼8.0 Ω/sq) good optical transparency (>91% at 550 nm). Cu(In,Ga)(S,Se)₂ (CIGSSe) thin film solar cells...

Chiral organic–inorganic hybrid perovskites exhibiting circular dichroism were prepared as a new class of chiral semiconductors.

Abstract Hydrogen evolution electrocatalysts can achieve sustainable hydrogen production via electrocatalytic water splitting; however, designing highly active and stable noble‐metal‐free that perform as efficiently Pt catalysts over a wide pH range is challenging task. Herein, new 2D cobalt phosphide/nickelcobalt phosphide (CoP/NiCoP) hybrid nanosheet network proposed, supported on an N‐doped carbon (NC) matrix efficient durable pH‐universal reaction (HER) electrocatalyst. It derived from...

Spherical silver nanoparticles with various sizes and standard deviations were synthesized by the polyol process. Two different synthesis methods compared in order to investigate influence of reaction parameters on resulting particle size its distribution. In precursor heating method, wherein a solution containing nitrate was heated temperature, ramping rate determined be critical parameter affecting size. contrast, injection which aqueous injected into hot ethylene glycol, because rapid...

The authors have investigated the influence of conductive ink compositions on quality ink-jet printed patterns. Controlling solvent plays an important role reducing so-called coffee ring effect. use a higher boiling point with lower surface tension such as ethylene glycol enables formation uniform deposit silver nanoparticles due to gradient-induced inward Marangoni flow, which can compensate outward convective flow. It is demonstrated that film directly related resistance difference in

Copper zinc tin sulfide (Cu2ZnSnS4, CZTS) has attracted significant attention in the past few years as a next generation absorber material for production of thin film solar cells on large scales due to high natural abundance all constituents, tunable direct band gap energy ranging from 1.0 1.5 eV, and absorption coefficient. In addition, address issue expensive vacuum-based processes, non-vacuum solution-based approaches are being developed CZTS layer deposition. Here, we demonstrate...

The effect of chemical-composition modification on the chiroptical property chiral organic ammonium cation-containing inorganic hybrid perovskite (chiral OIHP) is investigated. Varying mixing ratio bromide and iodide anions in S- or R-C6H5CH2(CH3)NH3)2PbI4(1-x)Br4x modifies band gap OIHP, leading to a shift circular dichroism (CD) signal from 495 474 nm. However, it also found that an abrupt crystalline structure transition occurs, CD turned off when iodide-determinant phases are transformed...

Abstract Determining cost-effective semiconductors exhibiting desirable properties for commercial photoelectrochemical water splitting remains a challenge. Herein, we report Sb 2 Se 3 semiconductor that satisfies most requirements an ideal high-performance photoelectrode, including small band gap and favourable cost, optoelectronic properties, processability, photocorrosion stability. Strong anisotropy, major issue , is resolved by suppressing growth kinetics via close space sublimation to...

Fully solution‐processed Al‐doped ZnO/silver nanowire (AgNW)/Al‐doped ZnO/ZnO multi‐stacked composite electrodes are introduced as a transparent, conductive window layer for thin‐film solar cells. Unlike conventional sol–gel synthetic pathways, newly developed combustion reaction‐based chemical approach allows dense and uniform at temperatures low 200 °C. The resulting exhibits high transmittance (93.4% 550 nm) sheet resistance (11.3 Ω sq ‐1 ), which far superior to those of other...

In principle, the induced chirality of hybrid perovskites results from symmetry-breaking within inorganic frameworks. However, detailed mechanism behind transfer remains unknown due to lack systematic studies. Here, using structural isomer with different functional group location, we deduce effect hydrogen-bonding interaction between two building blocks on degree in The asymmetric was clearly demonstrated by thorough experimental analysis. Systematic studies crystallography parameters...

Stabilizing atomically dispersed single atoms (SAs) on silicon photoanodes for photoelectrochemical-oxygen evolution reaction is still challenging due to the scarcity of anchoring sites. Here, we elaborately demonstrate decoration iridium SAs and assess role separation transfer photogenerated charge carriers. NiO/Ni thin film, an active highly stable catalyst, capable embedding in its lattices by locally modifying electronic structure. The isolated enable effective transport suppressing...

Abstract The oxygen evolution reaction, which involves high overpotential and slow charge-transport kinetics, plays a critical role in determining the efficiency of solar-driven water splitting. chiral-induced spin selectivity phenomenon has been utilized to reduce by-product production hinder charge recombination. To fully exploit polarization effect, we herein propose dual spin-controlled perovskite photoelectrode. three-dimensional (3D) serves as light absorber while two-dimensional (2D)...

The thermal behavior of the ink-jet printed conductive films composed Ag particles was investigated. use nanosized metallic allows formation highly patterns by printing followed heat-treatment at temperatures much lower than bulk melting temperature. Two different sized nanoparticles were used to study size influence on sintering temperature granular metal films. resistivity variation and microstructure monitored as a function using four-point probe scanning electron microscopy well analysis.

Spherical nanosize Ag/SiO2 composite particles have been synthesized within reverse micelles via metal alkoxide hydrolysis and condensation. The size of the thickness coating can be controlled by manipulating relative rates condensation reactions tetraethoxysilane (TEOS) microemulsion. Composite in range 20−35 nm are produced. As molar ratio water to surfactant is increased above 10, distribution broadens. Absorption spectra used dynamically monitor reaction growth. effects other synthesis...

High-performance, solution-processable semiconductors have drawn significant attention for use in low-cost, functional electronic applications. Metal oxide are the most promising building blocks high performance devices because of their electrical properties and solution-processability. However, major impediment metal is that applicable to activated by chemical/physical structural evolution at temperatures, which critically limits practical This article reviews recent progress development...