A compromise between high power conversion efficiency and long-term stability of hybrid organic-inorganic metal halide perovskite solar cells is necessary for their outdoor photovoltaic application commercialization. Herein, a method to improve the under water moisture exposure consisting encapsulation cell with an ultrathin plasma polymer reported. The deposition carried out at room temperature by remote vacuum adamantane powder. This does not affect performance tested devices virtually...

Mesoporous tetragonal RE:YPO4 nanophosphors (RE = Eu, Ce, Tb, and Ce + Tb) with a lenticular morphology, narrow size distribution, high surface area have been prepared by an homogeneous precipitation procedure consisting of aging, at low temperature (80–120 °C) in microwave oven, ethylene glycol solutions containing only yttrium acetylacetonate phosphoric acid. This synthesis method involves important advantages such as its simplicity, rapidness (reaction time 7 min), reaction yields. The...

Abstract Strain engineering, as a powerful strategy to tune the optical and electrical properties of two-dimensional (2D) materials by deforming their crystal lattice, has attracted significant interest in recent years. 2D can sustain ultra-high strains, even up 10%, due lack dangling bonds on surface, making them ideal brittle solids. This remarkable mechanical resilience, together with strong strain-tunable band structure, endows broad response upon strain. However, strain engineering...

Abstract Two-dimensional materials present exceptional crystal elasticity and provide an ideal platform to tune electrical optical properties through the application of strain. Here we extend recent research on strain engineering in monolayer molybdenum disulfide using adamantane plasma polymer pinning layer achieve unprecedented strains 2.8%. Using micro-reflectance spectroscopy, report maximum gauge factors −99.5 meV/% −63.5 for A B exciton MoS 2 , respectively, with a 50 nm capping layer....

Nanogenerators and self-powered nanosensors have shown the potential to power low-consumption electronics human-machine interfaces, but their practical implementation requires reliable, environmentally friendly scalable, processes for manufacturing processing. This article presents a plasma synthesis approach fabrication of piezoelectric nanogenerators (PENGs) sensors on paper substrates. Polycrystalline ZnO nanocolumnar thin films are deposited by plasma-enhanced chemical vapour deposition...

Transparent nanocolumnar porous ZnO thin films have been prepared by plasma-enhanced chemical vapor deposition. By controlling the H2/O2 ratio in plasma gas, deposition conditions were optimized to obtain an intense exciton emission at around 381 nm and virtually no luminescence visible region associated with electronic states gap. The intensity of band varied significantly reversibly partial pressure oxygen environment. This behavior its variations temperature water sustain use these as...

Abstract The main handicap still hindering the eventual exploitation of organometal halide perovskite‐based solar cells is their poor stability under prolonged illumination, ambient conditions, and increased temperatures. This article shows for first time vacuum processing most widely used solid‐state hole conductor (SSHC), i.e., Spiro‐OMeTAD [2,2′,7,7′‐tetrakis ( N , ‐di‐ p ‐methoxyphenyl‐amine) 9,9′‐spirobifluorene], how its dopant‐free crystalline formation unprecedently improves...

Abstract A family of 1D organic/inorganic core/shell materials formed by an inner organic nanowire (ONW) conformally covered with inorganic wide band gap semiconductor (ZnO or TiO 2 ) layer is presented. The developed procedure a two‐steps vacuum methodology involving the formation supported single crystal small‐molecule nanowires physical vapor deposition and plasma enhance chemical (PECVD) shell. Critical characteristics last technique are possibilities low temperature remote configuration...

We introduce herein the advanced application of low-pressure plasma procedures for development piezo and triboelectric mode I hybrid nanogenerators. Thus, assisted deposition functionalization methods are presented as key enabling technologies nanoscale design ZnO polycrystalline shells, formation conducting metallic cores in [email protected] nanowires, solventless surface modification polymeric coatings matrixes. show how perfluorinated chains grafting polydimethylsiloxane (PDMS) provides...

Abstract Despite the youthfulness of hybrid halide perovskite solar cells, their efficiencies are currently comparable to commercial silicon and have surpassed quantum‐dots cells. Yet, scalability these devices is a challenge due low reproducibility stability under environmental conditions. However, techniques reported date tackle such issues recurrently involve use solvent methods that would further complicate transfer industry. Herein reliable alternative relaying in implementation an...

This work reports about the preparation of plasma polymerized thin films perylene with thicknesses ∼30−150 nm and their characterization by different methods analysis optical properties. Highly absorbent fluorescent have been obtained this method that combines sublimation molecules controlled polymerization interaction remote Ar plasma. The polymeric are very flat a root mean square (rms) roughness in range 0.3−0.4 nm. In contrast sublimated layers present high scattering light, depict...

A new kind of visible-blind organic thin-film material, consisting a polymeric matrix with high concentration embedded 3-hydroxyflavone (3HF) dye molecules, that absorbs UV light and emits green is presented. The thin films can be grown on sensitive substrates, including flexible polymers paper. Their suitability as photonic active components devices demonstrated. Detailed facts importance to specialist readers are published "Supporting Information". Such documents peer-reviewed, but not...

Hierarchical (branched) and hybrid metal-NPs/organic supported NWs are fabricated through controlled plasma processing of metalloporphyrin, metallophthalocyanine perylene nanowires. The procedure is also applied for the development a general template route synthesis metal oxide

This work reports the preparation, by a new remote assisted plasma deposition process, of luminescent nanocomposite thin films consisting an insoluble organic matrix where photonically active perylene molecules are embedded. The obtained adamantane and precursor molecules. results show that is very effective to improve perylene–adamantane transparency in comparison with deposited films. have been characterized secondary-ion mass spectrometry FT-IR spectroscopy. These techniques atomic force...

In this paper, we report on the measurement and modeling of enhanced optical refractometric sensors based whispering gallery modes. The devices under test are microresonators made silicon nitride oxide, which differ in their sidewall inclination angle. our approach, these vertically coupled to a buried waveguide with aim creating integrated cost-effective devices. Device shows that optimization device is delicate balance resonance quality factor evanescent field overlap surrounding...

Channel waveguide-based evanescent-field optical sensors are developed to make a fully integrated chip biosensor. The system senses fluorescent analytes immobilized within micrometric sized bioreactor well realized an waveguide. main novelty of this work is related the fact that, well, excitation signal achieved by means evanescent field propagating through silicon oxynitride immobilization emitting molecules functionalization waveguide surface wet chemical method. These photonic biosensors...

In this work, the influence of substrate temperature (Ts) on chemical composition propanethiol plasma polymers was investigated for a given set conditions. first study, decrease in atomic sulfur content (at. %S) with deposition time (td) observed. This behavior is explained by heating growing film during process, limiting incorporation stable sulfur-based molecules produced plasma. Experiments carried out controlling support hypothesis. On other hand, an empirical law relating Ts and at. %S...

This work reports about the significant impact of substrate temperature ( T S ) on chemical composition, bond structure, and refractive index propanethiol plasma polymers. The experiments are conducted for a range (30–120 ºC) related to inherent heating observed during polymerization processes. highlights importance defining in order reach real control over deposition process. Stabilizing is essential establish good correlation between chemistry composition films. allows identification some...

Polarizers are ubiquitous components in current optoelectronic devices as displays or photographic cameras. Yet, control over light polarization is an unsolved challenge, since the main drawback of existing display technologies significant optical losses. In such a context, organometal halide perovskites (OMHP) can play decisive role given their flexible synthesis with tunable properties bandgap and photoluminescence, excellent emission low non-radiative recombination rate. Therefore, along...

An enhanced fluorescent emission in the near infrared is observed when Rhodamine 800 (Rh800) and 6G (Rh6G) dyes are coadsorbed porous SiO(2) optical thin films prepared by glancing angle deposition (GLAD). This unusual behavior not solution it has been ascribed to formation of a new type J-heteroaggregates with acceptor luminescence (HEAL). article describes detail explains main features this phenomenology previously referred short communication [J. R. Sánchez-Valencia, J. Toudert, L....

Green emitting and transparent films grown by a solvent-less method. Adjustable refractive index. The material is used as visual UV photodetector.

Abstract Damage‐free encapsulation of molecular structures with functional nanolayers is crucial to protect nanodevices from environmental exposure. With nanoscale electronic, optoelectronic, photonic, sensing, and other based on atomically thin fragile organic matter shrinking in size, it becomes increasingly challenging develop nanoencapsulation that simultaneously conformal at atomic scale does not damage networks, while delivering added device functionality. This work presents an...