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The development of low-cost, efficient, and stable counter electrode materials for dye sensitized solar cells (DSSCs) is desirable but remains a great challenge. Herein, we report a facile in-situ method to fabricate transparent CoS anchored on N-doped carbon film electrode through sulfurization of cobalt-metalloporphyrin metal-organic framework thin film on fluorine doped tin oxide glass. As counter electrode in bifacial DSSCs, and a power conversion efficiency of 9.11% and 6.64% respectively from front and rear irradiation was achieved, which is higher than that of Pt counter electrode (8.04% and 5.87%). The uniformly dispersed CoS nanoparticles on N-doped carbon film provides large catalytic active area and facilitates the electron transfer, which leads to the excellent catalytic ability of the CoS@N-doped carbon film. In addition, the in-situ preparation of the uniform film with nanosheet structure offers high electrical conductivity and unobstructed access for the diﬀusion of triiodide to available electroactive sites, resulting in excellent device performance. The transparent CoS@N-doped carbon film exhibited superior long-term stability even after 1000 h under natural conditions, which supports its application as an alternative counter electrode for substitution of Pt counter electrode in DSSCs.
This article was published in the following journal.
Name: ACS applied materials & interfaces
The oxygen evolution reaction (OER) is a key process for renewa-ble energy storage. However, developing non-noble metal OER electrocatalysts with high activity, long durability and scalability remains...
A novel thin film nanocomposite (TFN) forward osmosis (FO) membrane with a positively charged and nano-functional selective layer has been developed for effective heavy metal ions removal. The selecti...
We report a simple preparation of free-standing metal films via electroless plating (ELP) at the liquid-liquid (L-L) interface between an aqueous electroless plating solution and an organic solvent. T...
Metal-organic frameworks (MOFs) are an emerging class of porous materials with attractive properties; however, their practical applications are heavily hindered by the fragile nature. We report herein...
A simple strategy for one-step fabrication of tris(bipyridine)ruthenium(II) (Ru(bpy))-functionalized metal-organic framework (Ru-MOF) thin films using a self-assembly approach assisted by an electroch...
The purpose of this study is to compare metal surface finishes (proximal-coated titanium surface versus mid-coated titanium surface) on femoral components in hip arthroplasty.
The purpose of this study is to evaluate a new instrument that takes digital images of tear film (a thin film that coats the eye that is made up of oil and water). The investigators are i...
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2017 International Dry Eye Workshop (DEWS) defines dry eye as a multifactorial ocular surface disease characterized by tear film instability with disturbed visual function. As a smooth tra...
Use of a device (film badge) for measuring exposure of individuals to radiation. It is usually made of metal, plastic, or paper and loaded with one or more pieces of x-ray film.
A biosensing technique in which biomolecules capable of binding to specific analytes or ligands are first immobilized on one side of a metallic film. Light is then focused on the opposite side of the film to excite the surface plasmons, that is, the oscillations of free electrons propagating along the film's surface. The refractive index of light reflecting off this surface is measured. When the immobilized biomolecules are bound by their ligands, an alteration in surface plasmons on the opposite side of the film is created which is directly proportional to the change in bound, or adsorbed, mass. Binding is measured by changes in the refractive index. The technique is used to study biomolecular interactions, such as antigen-antibody binding.
Supramolecular networks that consist of ordered arrangements of organic electron donor linkers (usually ditopic or polytopic organic carboxylates) and metal cations. They can have an extremely high surface area and adjustable pore size that allows for the insertion of other molecules capable of various functions such as catalysis, capture of carbon dioxide, and drug delivery.
A thin protein film on the surface of DENTAL ENAMEL. It is widely believed to result from the selective adsorption of precursor proteins present in SALIVA onto tooth surfaces, and to reduce microbial adherence to the TEETH.
The thin serous membrane enveloping the lungs (LUNG) and lining the THORACIC CAVITY. Pleura consist of two layers, the inner visceral pleura lying next to the pulmonary parenchyma and the outer parietal pleura. Between the two layers is the PLEURAL CAVITY which contains a thin film of liquid.