A new solution-processable fabrication protocol using a soluble tetrabenzoporphyrin (BP) precursor and bis(dimethylphenylsilylmethyl)[60]fullerene (SIMEF) created three-layered p-i-n photovoltaic devices, in which the i-layer possesses well-defined bulk heterojunction structure columnar BP crystals grow vertically from bottom p-layer. The device showed power conversion efficiency of 5.2% (V(OC) = 0.75 V; J(SC) 10.5 mA/cm(2); FF 0.65).

Despite tremendous progress in optoelectronic devices using lead perovskite (CH3NH3(+)PbI3(-)), there has been a paucity of mechanistic information on how photoactive micron-sized crystals grow from mixture layered crystal lead(II) iodide and methylammonium mediated by polar solvent, DMSO or DMF. We report here that the whole process synthesis consists series equilibria driven reversible solvent participation involving polymeric strip plumbate(II) oligomer as key intermediate. A significant...

In this work, both anode and cathode interfaces of p‐i‐n CH 3 NH PbI perovskite solar cells (PVSCs) are simultaneously modified to achieve large open‐circuit voltage (V oc ) fill factor (FF) for high performance semitransparent PVSCs (ST‐PVSCs). At the anode, NiO serves as an efficient hole transport layer with appropriate surface property promote formation smooth film coverage. cathode, a fullerene bisadduct, C 60 (CH 2 )(Ind), shallow lowest unoccupied molecular orbital level, is...

Recent advancements in computer-assisted learning systems have caused an increase the research of knowledge tracing, wherein student performance on coursework exercises is predicted over time. From viewpoint data structure, can be potentially structured as a graph. Incorporating this graph-structured nature into tracing model relational inductive bias improve its performance; however, previous methods, such deep did not consider latent graph structure. Inspired by recent successes neural...

In this work, we fabricated indium-free perovskite solar cells (SCs) using direct- and dry-transferred aerosol single-walled carbon nanotubes (SWNTs). We investigated diverse methodologies to solve SWNTs' hydrophobicity doping issues in SC devices. These include changing wettability of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PSS), MoO3 thermal doping, HNO3(aq) with various dilutions from 15 70 v/v% minimize its instability toxic nature. discovered that isopropanol (IPA)...

Monoaddition of Grignard reagents, in particular tri(organo)silylmethylmagnesium chlorides, to [60]fullerene took place smoothly the presence dimethylformamide produce (organo)(hydro)[60]fullerenes, C60R1H, good yield (up 93% isolated yield). The hydrofullerene was then deprotonated generate corresponding anion, C60R−, which alkylated obtain 58π-electron di(organo)[60]fullerenes, C60R1R2, high overall two-step methodology provides a wide variety 1,4-di(organo)[60] fullerenes bearing same or...

Organic solar cells have been regarded as a promising electrical energy source. Transparent and conductive carbon nanotube film offers an alternative to commonly used ITO in photovoltaics with superior flexibility. This communication reports nanotube-based indium-free organic their flexible application. Direct dry deposited doped MoO(x) functions electron-blocking transparent electrode, its performance is enhanced further by overcoating withPSS. The single-walled cell this work shows power...

Transparent carbon electrodes, nanotubes, and graphene were used as the bottom electrode in flexible inverted perovskite solar cells. Their photovoltaic performance mechanical resilience compared analyzed using various techniques. Whereas a conventional cells indium tin oxide showed power conversion efficiency of 17.8%, nanotube- graphene-based efficiencies 12.8% 14.2%, respectively. An established MoO3 doping was for electrode-based devices. The difference between due to morphology...

A biphenyl-fused BODIPY was synthesized through a facile oxidative cyclization of peripheral aryl-substituents at the β-position unit. The extended π-system fused induces near-infrared (NIR) absorption and strong π-π interactions in solid state. These features are beneficial for application dye as functional material. demonstrated to exhibit photocurrent conversion ability on basis its n-type semiconducting property.

Recent advances in neural autoregressive models have improve the performance of speech synthesis (SS).However, as they lack ability to model global characteristics (such speaker individualities or speaking styles), particularly when these not been labeled, making SS systems more expressive is still an open issue.In this paper, we propose combine VoiceLoop, model, with Variational Autoencoder (VAE).This approach, unlike traditional systems, uses VAE explicitly, enabling expressiveness...

5-Perfluorophenyl-11-phenyltetracene (FPPT) having both aryl (Ar) and perfluoroaryl (FAr) groups has been designed synthesized to obtain well-defined π−π stacking structure of the tetracene core. Single-crystal X-ray analyses as well photoconductivity hole mobility measurements revealed that this strategy is promising for enhancement charge carrier properties.

Abstract Double‐walled carbon nanotubes are between single‐walled and multiwalled nanotubes. They comparable to with respect the light optical density, but their mechanical stability solubility higher. Exploiting such advantages, solution‐processed transparent electrodes demonstrated using double‐walled application perovskite solar cells is also demonstrated. Perovskite which harvest clean power have attracted a lot of attention as next‐generation renewable energy source. However,...

Here we show that essentially any Fe compounds spanning salts, nanoparticles, and buckyferrocene could serve as catalysts for single-walled carbon nanotube (SWNT) forest growth when supported on AlOx annealed in hydrogen. This observation was explained by subsurface diffusion of atoms into the support induced hydrogen annealing where most deposited left surface remaining reconfigured small nanoparticles suitable SWNT growth. Interestingly, average diameters SWNTs grown from all iron studied...

1,2-Dihydromethano[60]fullerene and its congeners have attracted much interest, but they been synthesized only in very low yields because of several insurmountable problems. A new three-stage synthesis involving addition a silylmethylmagnesium chloride to [60]- [70]fullerene oxidation the anionic intermediate with CuCl(2) afforded methano[60]- methano[70]fullerenes 90% 70% overall yield, respectively. The reaction 1,4-diorgano[60]fullerene also proceeded smoothly give diastereomerically pure...

Abstract This review article describes design concept, synthesis, and features of fullerene derivatives having high lowest unoccupied molecular orbital (LUMO) levels to achieve open-circuit voltage in organic thin-film photovoltaic devices. Installation electron-donating groups onto decrease the size π-electron-conjugated system raise LUMO levels, affording high-performance solar cells. Addition methano group as smallest carbon addend obtain 56π-electron is likely a promising strategy for...

Carbon-sandwiched perovskite solar cells have long-term stability and are low cost.

Abstract Emerging solar cells, namely, organic cells and perovskite are the thin‐film photovoltaics that have light to electricity conversion efficiencies close of silicon while possessing advantages in having additional functionalities, facile‐processability, low fabrication cost. To maximize these advantages, electrode components must be replaced by materials more flexible cost‐effective. Researchers around globe been looking for new electrodes meet requirements. Among many candidates,...

Organic–inorganic halide perovskite solar cells have received much attention because they achieve high power conversion efficiencies while providing the advantages of thin-film cells, namely, solution processability and potentially low fabrication costs. However, at current level cell technology, these cannot be maximized structural material limitations. Here, we provide a to problems by replacing conventional metal oxide electrodes with carbon nanotube electrodes. We also simplified...

Abstract Herein, we report use of [Li + @C 60 ]TFSI − as a dopant for spiro‐MeOTAD in lead halide perovskite solar cells. This approach gave an air stability nearly 10‐fold that conventional devices using Li TFSI . Such high is attributed to the hydrophobic nature repelling moisture and absorbing intruding oxygen, thereby protecting device from degradation. Furthermore, could oxidize without need oxygen. The encapsulated exhibited outstanding more than 1000 h while illuminated under ambient...

Single-walled carbon nanotubes (CNTs) has been considered as a promising material for top electrode of perovskite solar cells owing to its hydrophobic nature, earth-abundance, and mechanical robustness. However, poor conductivity, shallow work function, nonreflective nature have limited further enhancement in power conversion efficiency (PCE) CNT electrode-based cells. Here, we introduced simple scalable method address these issues by utilizing an ex-situ vapor-assisted doping method....

Highly sensitive detection of Fe³⁺ was achieved using a fluorescein-based fluorescent porous aromatic framework.

Compositional catalysts based on porous supports and incorporated catalytic nanoparticles have achieved great successes during the past decades. However, rational design of synergic modulating interactions between functional sites are still far from being well developed. In this work, aiming at overcoming difficulties comprehensive screening correspondingly matched sites, a cationic aromatic framework as capturing platform polyoxometalate anions conversion materials separately designed,...

2D perovskite-stabilized FACsPbI3 (FA = formamidinium) perovskite solar cells were fabricated in both normal-type and inverted-type architectures. While the devices exhibited a high power conversion efficiency of 20.2%, their reproducibility was limited. On other hand, an 18.2% with greater stability higher than those devices. The reduced associated crack formation on films during spin-coating process. hardness sublayer directly linked to formation. Inverted-type 2D/3D ozone-treated...