Organic electrodes mainly consisting of C, O, H, and N are promising candidates for advanced batteries. However, the sluggish ionic electronic conductivity limit full play their high theoretical capacities. Here, we integrate idea metal-support interaction in single-atom catalysts with π–d hybridization into design organic electrode materials applications lithium (LIBs) potassium-ion batteries (PIBs). Several types transition metal single atoms (e.g., Co, Ni, Fe) incorporated semiconducting...

Vertically aligned silicon nanowires (SiNWs) were cost-effectively formed on a four-inch wafer using simple room temperature approach, i.e., metal-assisted electroless etching. Tapering the NWs by post-KOH dipping achieved separation of each NW from bunched NW, resulting in strong enhancement broadband optical absorption. As etching time increases, crossover feature was observed tradeoff between enhanced light trapping (by graded-refractive index during initial tapering) and deteriorated...

The optimal hybridization of photovoltaic (PV) and thermoelectric (TE) devices has long been considered ideal for the efficient harnessing solar energy. Our hybrid approach uses full spectrum energy via lossless coupling between PV TE while collecting waste from thermalization transmission losses devices. Achieving makes power output device equal to sum maximum outputs produced separately individual need have low internal resistances enough convey photo-generated currents without sacrificing...

A monolithically integrated, single-unit PV–LIB device shows exceptional electrochemical performance that lies far beyond those achievable by conventional PVs or LIBs alone.

Transparent conducting electrodes (TCEs) are considered to be an essential structural component of flexible organic solar cells (FOSCs). Silver nanowire (AgNW) widely used as TCEs owing their excellent electrical and optical properties. The fabrication AgNW has faced challenges in terms forming large uniform interconnected networks so that high conductivity reproducibility can achieved. In this study, a simple method for creating intimate contact between AgNWs uses cold isostatic pressing...

Transparent photovoltaics (TPVs), which combine visible transparency and solar energy conversion, are being developed for applications in conventional opaque cells unlikely to be feasible, such as windows of buildings or vehicles. In this paper, we review recent progress TPVs along with strategies that enable the photovoltaics, including thin-film technology, selective light-transmission luminescent concentrator technology. From fundamental research commercialization TPV, three main...

We demonstrate novel all-back-contact Si nanohole solar cells via the simple direct deposition of molybdenum oxide (MoOx) and lithium fluoride (LiF) thin films as dopant-free selective carrier contacts (SCCs). This approach is in contrast to conventionally used high-temperature thermal doping processes, which require multistep patterning processes produce diffusion masks. Both MoOx LiF are inserted between absorber Al electrodes interdigitatedly at rear cell surfaces, facilitating effective...

Zinc-air battery (ZAB) technology is considered one of the promising candidates to complement existing lithium-ion batteries for future large-scale high-energy-storage demands. The scientific literature reveals many efforts ZAB chemistries, materials design, and limited accounts cell design principles with apparently superior performances liquid solid-state electrolytes. However, along difficulty forming robust solid-electrolyte interphases, discrepancy in testing methods assessment metrics...

The rational design of wide-temperature operating Zn-air batteries is crucial for their practical applications. However, the fundamental challenges remain; limitation sluggish oxygen redox kinetics, insufficient active sites, and poor efficiency/cycle lifespan. Here we present heterointerface-promoted sulfur-deficient cobalt-tin-sulfur (CoS1-δ/SnS2-δ) trifunctional electrocatalysts by a facile solvothermal solution-phase approach. CoS1-δ/SnS2-δ displays superb activities, precisely...

Silicon nanowires (NWs) and microwires (MWs) are cost-effectively integrated on a 4-inch wafer using metal-assisted electroless etching for solar cell applications. MWs periodically positioned low-level optical patterning in between dense array of NWs. A spin-on-doping technique is found to be effective the formation heavily doped, thin n-type shells which radial doping profile easily delineated by low voltage scanning electron microscopy. Controlled tapering NWs results additional...

A radial heterojunction nanowire diode (RND) array consisting of a ZnO (shell)/Si (core) structure was fabricated using conformal coating n-type layer that surrounded p-type Si nanowire. In both ultraviolet (UV) and visible ranges, the photoresponsivity RND larger than planar thin film (PD) owing to efficient carrier collection with improved light absorption. Compared PD, in forward bias, 6 μm long resulted ∼2.7 times enhancement UV responsivity at λ=365 nm, which could be explained based on...

Abstract A systematic study was conducted into the use of metal-assisted chemical etching (MacEtch) to fabricate vertical Si microwire arrays, with several models being studied for efficient redox reaction reactants silicon through a metal catalyst by varying such parameters as thickness and morphology film. By optimizing MacEtch conditions, high-quality microwires were successfully fabricated lengths up 23.2 μm, which, when applied in solar cell, achieved conversion efficiency 13.0%. These...

Flexible crystalline silicon radial junction photovoltaics with tapered microwires are presented, which simultaneously show high flexibility and efficiency.

Rational construction of flexible free-standing electrocatalysts featuring long-lasting durability, high efficiency, and wide temperature tolerance under harsh practical operations are fundamentally significant for commercial zinc-air batteries. Here, 3D bifunctional membrane composed covalently cross-linked supramolecular polymer networks with nitrogen-deficient carbon nitride nanotubes fabricated (referred to as PEMAC@NDCN) by a facile self-templated approach. PEMAC@NDCN demonstrates the...

We demonstrate here an embedded metal electrode for highly efficient organic–inorganic hybrid nanowire solar cells. The proposed is effective alternative to the conventional bus and finger which leads a localized short circuit at direct Si/metal contact has poor collection efficiency due nonoptimized design. In our design, Ag/SiO2 into Si substrate while being positioned between arrays underneath poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), facilitating suppressed...

Proton exchange membrane water electrolysis (PEMWE) with high‐purity H 2 and O products swift response to electricity fluctuation is of great interest for renewable energy, chemical pharmaceutical industries. Ruthenium oxide shows promise as an alternative iridium catalysts in PEMWE but suffers from severe anodic corrosion. Herein, a pluralistic electronic structure modulation approach presented address the instability issue Ru, by situ growing Mn x Ru 1− solid solution on MnO , coated...

Various electrocatalysts are extensively examined for their ability to selectively produce desired products by electrochemical CO

Abstract High‐aspect‐ratio silicon nanostructures are essential building blocks for next‐generation electronics, but their fabrication remains challenging due to process complexities and structural instabilities. Here, this study presents an unprecedented gas‐phase metal‐assisted chemical etching (GP‐MACE) strategy using high‐purity ozone (O 3 ) as oxidizing agent. This approach achieves remarkable rates of ≈1 µm min −1 at room temperature—70 times faster than conventional oxygen‐based...

A novel stamped hybrid solar cell was proposed using the stamping transfer technique by an active PEDOT:PSS thin layer onto top of silicon nanowires (SiNWs). Compared to a bulk-type counterpart that fully embeds SiNWs inside PEDOT:PSS, increase in photovoltaic efficiency observed factor ∼4.6, along with improvements both electrical and optical responses for cell. Such cells due formation well-connected linearly aligned channels at ends after process. These facilitated not only improve charge...

We developed a unique nano- and microwire hybrid structure by selectively modifying only the tops of microwires using metal-assisted chemical etching. The proposed nano/micro not minimizes surface recombination but also absorbs 97% incident light under AM 1.5G illumination, demonstrating outstanding absorption compared to that planar (59%) arrays (85%). solar cells with an area 1 cm2 exhibit power conversion efficiencies (Eff) up 17.6% illumination. In particular, show high short-circuit...

We optimize the thickness of a transparent conducting oxide (TCO) layer, and apply microscale mesh-pattern metal electrode for high-efficiency a-Si/c-Si heterojunction solar cells. A cell equipped with proposed microgrid demonstrates high short-circuit current density (JSC) 40.1 mA/cm(2), achieves efficiency 18.4% an open-circuit voltage (VOC) 618 mV fill factor (FF) 74.1% as result shortened carrier path length decreased area electrode. Furthermore, by optimizing process sequence formation,...

A combined wire structure, made up of longer periodic Si microwires and short nanoneedles, was prepared to enhance light absorption using one-step plasma etching via lithographical patterning. The array exhibited ~97.6% from 300 1100 nm without an anti-reflection coating. These arrays on a substrate were embedded into transparent polymer. large-scale wire-embedded soft film then obtained by peeling the polymer-embedded portion substrate. Optically attractive features present in these films,...