Abstract: A core shell quantum dot including a core including a first semiconductor nanocrystal and including zinc, tellurium, and selenium and a semiconductor nanocrystal shell disposed on the core and including a zinc chalcogenide, a method of manufacture thereof, and a device including the same are disclosed, wherein the core shell quantum dot does not include cadmium, lead, mercury, or a combination thereof, wherein in an X-ray photoelectron spectrum of the quantum dot, a peak area for Te oxide to a peak area for Te3d5/2 as an area percentage is less than or equal to about 25%.

Abstract: Described herein are compositions and methods relating to luminescent structures.

Abstract: A light-harvesting material comprises a perovskite absorber doped with a metal chalcogenide. The light-harvesting material may be used in a photovoltaic device, comprising (1) a first conductive layer, (2) an optional blocking layer, on the first conductive layer, (3) a semiconductor layer, on the first conductive layer, (4) a light-harvesting material, on the semiconductor layer, (5) a hole transport material, on the light-harvesting material, and (6) a second conductive layer, on the hole transport material.

Abstract: Provided is a ternary or quaternary semiconductor nanoparticle that enables the band-edge emission and a less toxic composition. A semiconductor nanoparticle is provided that contains Ag, In, and S and has an average particle size of 50 nm or less, wherein the ratio of the number of atoms of Ag to the total number of atoms of Ag and In is 0.320 or more and 0.385 or less, the ratio of the number of atoms of S to the total number of atoms of Ag and In is 1.20 or more and 1.45 or less. The semiconductor nanoparticle is adapted to emit photoluminescence having a photoluminescence lifetime of 200 ns or less upon being irradiated with light having a wavelength in a range of 350 nm to 500 nm.

Abstract: Microbial compositions for application to plants, plant parts and plant seeds are provided for improvement of plant yield and/or other beneficial plant traits. Methods of making and applying microbial compositions or formulations to plants, plant parts or plant seeds or to growth media are further provided to increase or improve plant yield and/or other beneficial plant traits.

Abstract: Bandgap-tunable perovskite compositions are provided having the formula CsPb(A)xBy)3, wherein A and B are each a halogen. The mixed halide perovskite composition has a morphology which suppresses phase segregation to stabilize a tuned bandgap of the mixed halide perovskite composition. For example, the perovskite may be in the form of nanocrystals embedded in a non-perovskite matrix, which, for example, may have the formula Cs4Pb(A)xBy)6, wherein A and B are each a halogen. Solar cells and light-emitting diodes comprising the mixed perovskite compositions are also provided.

Abstract: The present invention pertains to a light absorption layer for forming a solar cell and a photoelectric conversion element having excellent durability and photoelectric conversion efficiency in the near infrared region, and a solar cell and a photoelectric conversion element having the light absorption layer. This light absorption layer contains a perovskite compound having a band gap energy of 1.7-4.0 eV, and a quantum dot having a band gap energy equal to or higher than 0.2 eV and equal to or lower than the band gap energy of the perovskite compound.

Abstract: Provided are: a light-emitting layer for a perovskite light-emitting device; a method for manufacturing the same; and a perovskite light-emitting device using the same. The method of the present invention for manufacturing a light-emitting layer for a halide perovskite light-emitting device comprises a step of forming a first nanoparticle thin film by coating, on a member for coating a light-emitting layer, a solution comprising halide perovskite nanoparticles including a perovskite nanocrystal structure. Thereby, a nanoparticle light emitter has therein a halide perovskite having a crystal structure in which FCC and BCC are combined; and can show high color purity. In addition, it is possible to improve the luminescence efficiency and luminance of a device by making perovskite as nanoparticles and then introducing the same into a light-emitting layer.

Abstract: Provided are: a light-emitting layer for a perovskite light-emitting device; a method for manufacturing the same; and a perovskite light-emitting device using the same. The method of the present invention for manufacturing a light-emitting layer for a halide perovskite light-emitting device comprises a step of forming a first nanoparticle thin film by coating, on a member for coating a light-emitting layer, a solution comprising halide perovskite nanoparticles including a perovskite nanocrystal structure. Thereby, a nanoparticle light emitter has therein a halide perovskite having a crystal structure in which FCC and BCC are combined; and can show high color purity. In addition, it is possible to improve the luminescence efficiency and luminance of a device by making perovskite as nanoparticles and then introducing the same into a light-emitting layer.

Abstract: The size-dependent band-gap tunability and solution processability of nanocrystals (NCs) make them attractive candidates for optoelectronic applications. One factor that presently limits the device performance of NC thin films is sub-bandgap states, also referred to as trap states. Trap states can be controlled by surface treatment of the nanocrystals.

Abstract: Provided are a composition for forming a layered transition metal chalcogenide compound layer and a method of forming a layered transition metal chalcogenide compound layer by using the composition. The composition includes at least one of a transition metal precursor represented by Formula 1 and a chalcogenide precursor represented by Formula 2. Ma(R1)6-b-c(H)b(R2)c??[Formula 1] wherein, in Formula 1, M, R1, R2, a, b, and c are the same as defined in the detailed description, and M?kX2??[Formula 2] wherein, in Formula 2, M? and X are the same as defined in the detailed description.

Abstract: A colloidal material including semiconductor nanocrystals of formula AnXm, wherein A is selected from group Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, Vb, VIb, VIIb, VIII, IIb, III, IV or mixtures thereof, X is selected from group Va, VIa, VIIa or mixtures thereof, and n and m are independently a decimal number from 0 to 5. The semiconductor nanocrystals have a quasi 2D structure, wherein the smallest dimension is smaller than the other two dimensions by a factor of at least 1.5 and the faces substantially normal to the smallest dimension consist either of A or X. Also, a semiconducting thin film, an optoelectronic device, a laser, a photovoltaic cell, a diode, a light emitting diode or a display including the colloidal material.

Abstract: The present invention provides a method for synthesizing a BixSb2-xTe3 thermoelectric nanocompound (0<x<2), comprising the following steps: preparing a Bi—Sb—Te solution by adding Bi, Sb, and Te precursors to a solvent (step 1); preparing a Bi—Sb—Te hydrate by mixing the Bi—Sb—Te solution prepared in step 1) with a base aqueous solution (step 2); preparing a BixSb2-xTe3 reactant by liquid phase reduction at room temperature after adding a reducing agent to the Bi—Sb—Te hydrate prepared in step 2) (step 3); aging the BixSb2-xTe3 reactant prepared in step 3) (step 4); and preparing BixSb2-xTe3 nanoparticles by filtering and drying the BixSb2-xTe3 reactant aged in step 4) (step 5). The BixSb2-xTe3 thermoelectric nanocompound synthesized by the method of the present invention via liquid phase reduction is composed of regular nanoparticles since the method does not need any additional heat-treatment to eliminate chemical additives and prevents particles from being over-grown.

Abstract: An electrode assembly includes a handle, holder, and electrode with an electrical conductor. The electrode is loaded into the holder with its attached conductor. The holder includes a protective cap, a resilient button with a flange, an alignment ring, two plungers each with a spring, and a retention ring. The flange and retention ring both have plural holes in registration and with posts depending from the alignment ring in order to hold the retention ring in place. Inside the button are two plungers, one on top of the other, and each with its own spring resisting downward pressure. Once the cap is removed from the button, the holder is placed against the skin of a patient, and the button is pressed, the top plunger pushes the bottom plunger against the skin of the patient and then the electrode from the protection ring, thereby ejecting the electrode.

Abstract: Selenogermanate, selenogallo- or selenoindo-germanate glasses that are modified by alkali metals, for example, Na or Li and, as such, are characterized by high alkali ion mobility or conductivity. Ionic conducting chalcogenide glasses have potential application as an electrolyte medium for solid state batteries.

Abstract: This disclosure concerns a method of making nanowires in a single flask and in non-coordinating solvent involving the reaction of PbO with oleic acid to produce Pb oleate, heating the Pb oleate to a preferred temperature with additional coordinating ligands, injecting a solution of Se to produce a second solution, heating the second solution, and maintaining the temperature, resulting in nucleation and growth of PbSe nanowires.

Abstract: The present invention provides a method for the preparation of low-dimensional materials, comprising mixing a pristine material to be abraded with an organic solvent to form a mixture, abrading the material to be abraded by bead-milling, obtaining a suspension comprising the material of low dimension and the organic solvent, and removing the organic solvent from the suspension to obtain the low-dimensional material.

Abstract: The present invention relates to dispersible binary and ternary metal chalcogenide nanoparticle compositions that are substantially free of organic stabilizing agents. These nanoparticle compositions can be used as precursor inks for the preparation of copper zinc tin chalcogenides and copper indium gallium chalcogenides. In addition, this invention provides processes for manufacturing coated substrates and thin films of copper zinc tin chalcogenide and copper indium gallium chalcogenide. This invention also provides process for manufacturing photovoltaic cells incorporating such thin films.

Abstract: The invention describes two methods for manufacturing metal dichalcogenide materials. The invention also includes a coated dichalcogenide substrate.

Abstract: The invention relates to a novel process for preparing lithium sulfide and to the use thereof, wherein a reaction of lithium-containing strong bases with hydrogen sulfide is undertaken in an aprotic organic solvent within the temperature range from ?20 to 120° C. under inert conditions. The lithium sulfide obtained by the process is used as a positive material in a galvanic element or for the synthesis of Li ion-conductive solids, especially for the synthesis of glasses, glass ceramics or crystalline products.

Abstract: Disclosed are new compound semiconductors which may be used for solar cells or as thermoelectric materials, and their application. The compound semiconductor may be represented by a chemical formula: InxCo4Sb12-zSez, where 0<x?0.25 and 0.4<z?2.

Abstract: It is an object to provide a method for producing compound semiconductor particles in which monodisperse compound semiconductor particles can be prepared according to the intended object, clogging with products does not occur due to self-dischargeability, a large pressure is not necessary, and productivity is high. In producing compound semiconductor particles by separating and precipitating, in a fluid, semiconductor raw materials, the fluid is formed into a thin film fluid between two processing surfaces arranged so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, and the semiconductor raw materials are separated and precipitated in the thin film fluid.

Abstract: A process for producing copper selenide nanoparticles by effecting conversion of a nanoparticle precursor composition comprising copper and selenide ions to the material of the copper selenide nanoparticles in the presence of a selenol compound. Copper selenide-containing films and CIGS semiconductor films produced using copper selenide as a fluxing agent are also disclosed.

Abstract: A coated quantum dot and methods of making coated quantum dots are provided. Products including quantum dots described herein are also disclosed.

Abstract: The present invention provides a conductive silica sol composition containing at least a silica sol composition, and at least one selected from perfluoroalkyl sulfonates perfluoroalkyl sulfone imide salts, and bis(fluorosulfonyl) imide salts.

Abstract: A radiation converter material includes a semiconductor material used for directly converting radiation quanta into electrical charge carriers. In at least one embodiment, the semiconductor material includes a dopant in a dopant concentration and defect sites produced in a process-dictated manner in such a way that the semiconductor material includes an ohmic resistivity in a range of between 5·107 ?·cm and 2·109 ?·cm. Such a radiation converter material is particularly well matched to the requirements in particular in human-medical applications with regard to the high flux rate present and the spectral distribution of the radiation quanta. In at least one embodiment, the invention additionally relates to a radiation converter and a radiation detector, and a use of and a method for producing such a radiation converter material.

Abstract: The present invention discloses an Al—Sb—Te phase change material used for PCM and fabrication method thereof. Said phase change material, which can be prepared by PVD, CVD, ALD, PLD, EBE, and ED, is a mixture of three elements aluminum (Al), antimony (Sb) and tellurium (Te) with a general formula of Alx(SbyTe1)1-x, where 0<x?0.85, 0.67?y?7. Said material is electrically driven from outside. By adjusting the content of three elements in the mixture, storage materials with different crystallization temperatures, melting temperatures and activation energies of crystallization can be achieved. Any two elements of aluminum, antimony and tellurium can be bonded to each other, so the adjustability is very high, maintaining the phase change properties in a wide range.

Abstract: A process of synthesizing nanocrystals, the process including: obtaining a metal precursor, a non-metal precursor, a ligand compound, and an ionic liquid; and contacting the metal precursor, the non-metal precursor, the ligand compound, and the ionic liquid to form a mixture and synthesize a first semiconductor nanocrystal.

Abstract: Disclosed herein is an isolable colloidal particle comprising a nanoparticle and an inorganic capping agent bound to the surface of the nanoparticle, a method for making the same in a biphasic solvent mixture, and the formation of structures and solids from the isolable colloidal particle. The process can yield photovoltaic cells, piezoelectric crystals, thermoelectric layers, optoelectronic layers, light emitting diodes, ferroelectric layers, thin film transistors, floating gate memory devices, phase change layers, and sensor devices.

Abstract: A compound semiconductor precursor ink composition includes an ink composition for forming a chalcogenide semiconductor film and a peroxide compound mixed with the ink composition. A method for forming a chalcogenide semiconductor film and a method for forming a photovoltaic device each include using the compound semiconductor precursor ink composition containing peroxide compound to form a chalcogenide semiconductor film.

Abstract: A compound semiconductor precursor ink composition includes an ink composition for forming a chalcogenide semiconductor film and a peroxide compound mixed with the ink composition. A method for forming a chalcogenide semiconductor film and a method for forming a photovoltaic device each include using the compound semiconductor precursor ink composition containing peroxide compound to form a chalcogenide semiconductor film.

Abstract: Thin films comprising crystalline Fe2XY4, wherein X is Si or Ge and Y is S or Se, are obtained by coating an ink comprised of nanoparticle precursors of Fe2XY4 and/or a non-particulate amorphous substance comprised of Fe, X and Y on a substrate surface and annealing the coating. The coated substrate thereby obtained has utility as a solar absorber material in thin film photovoltaic devices.

Abstract: A method for preparing semiconductor nanocrystals includes reacting one or more semiconductor nanocrystal precursors in a liquid medium in the presence of a boronic compound at a reaction temperature resulting in semiconductor nanocrystals. Semiconductor nanocrystals are also disclosed.

Abstract: A process of growth in the thickness of at least one facet of a colloidal inorganic sheet. By sheet is meant a structure having at least one dimension, the thickness, of nanometric size and lateral dimensions great compared to the thickness, typically more than 5 times the thickness. By homostructured is meant a material of homogeneous composition in the thickness and by heterostructured is meant a material of heterogeneous composition in the thickness. The process allows the deposition of at least one monolayer of atoms on at least one inorganic colloidal sheet, this monolayer being constituted of atoms of the type of those contained or not in the sheet. Homostructured and heterostructured materials resulting from such process as well as the applications of the materials are also described.

Abstract: Semiconductor nanoparticles of the present invention are particles each having a core-shell structure that includes a core and a shell surrounding the core. The core includes (AgIn)xZn2(1?x)S2 (0.4?x?0.95 holds). The shell includes ZnS or ZnO, and the semiconductor nanoparticles each have at least one hydrophilic functional group on a surface of the shell. As the hydrophilic functional group, for example, a carboxyl group or a sulfo group may be mentioned. Since having a low toxicity and a high emission quantum yield, the semiconductor nanoparticles as described above may be used for a fluorescent probe for biological labeling.

Abstract: Disclosed herein is a semiconducting nanoparticle comprising a one-dimensional semiconducting nanoparticle having a first end and a second end; where the second end is opposed to the first end; a first node that comprises a first semiconductor; where the first node contacts a radial surface of the one-dimensional semiconducting nanoparticle producing a first heterojunction at the point of contact; and a second node that comprises a second semiconductor; where the second node contacts the radial surface of the one-dimensional semiconducting nanoparticle producing a second heterojunction at the point of contact; where the first heterojunction is compositionally different from the second heterojunction.

Abstract: A composition for forming an electrode. The composition includes a metal fluoride compound doped with a dopant. The addition of the dopant: (i) improves the bulk conductivity of the composition as compared to the undoped metal fluoride compound; (ii) changes the bandgap of the composition as compared to the undoped metal fluoride compound; or (iii) induces the formation of a conductive metallic network. A method of making the composition is included.

Abstract: The present invention provides for a natural, non-toxic, environmentally friendly, “green” mineral based composition that produces ions and emits far infrared heat and the composition comprises tourmaline microcrystals and at least one activating element.

Abstract: The disclosure describes methods for preparing lead salt materials which are sensitive to the mid-infrared spectrum which can be used to manufacture high-uniformity, high-detectivity, polycrystalline lead salt photoconductive and photovoltaic photodetectors.

Abstract: A phase-change memory and a semiconductor recording/reproducing device capable of reducing consumed power are provided. A SnxTe100-x/Sb2Te3 SL film obtained by depositing a SnxTe100-x film and a Sb2Te3 film layer by layer contains a SnTe/Sb2Te3 superlattice phase formed of SnTe and Sb2Te3, a SnSbTe alloy phase, and a Te phase. The SnTe/Sb2Te3 superlattice phase is diluted by the SnSbTe alloy phase and the Te phase. Here, X of the SnxTe100-x film is represented by 4 at. %?X?55 at. %.

Abstract: The invention comprises the method of growing lead chalcogenide nanocrystals from the surface of titanium dioxide in organic solvents, lead chalcogenide/TiO2 nanocomposites colloids produced by the claimed method, and the application of lead chalcogenide/TiO2 nanostructures as an active absorbing element in nanocrystal-sensitized solar cells.

Abstract: The invention relates to electroplating additives for the deposition of a group IB metal/binary or ternary group IB-group IIIA/ternary, quaternary or pentanary group IB-group IIIA-group VIA alloy on substrates useful for thin film solar cells. The additives are thiourea compounds or derivatives which have the general formula (A): wherein X1 and X2 may be the same or different and are selected from the group consisting of arylene and heteroarylene; FG1 and FG2 may be the same or different or are selected from the group consisting of —S(O)2OH, —S(O)OH, —COOH, —P(O)2OH and primary, secondary and tertiary amino groups and salts and esters thereof; R is selected from the group consisting of alkylene, arylene or heteroarylene and n and m are integers from 1 to 5.

Abstract: A process of preparing a zinc chalcogenide includes providing a solution of 8-hydroxyquinoline; a zinc precursor; and a reaction solvent; isolating a precipitate from the solution; and calcining the precipitate to form the zinc chalcogenide. Additionally, a polymer composite may include a polymer, bis(8-hydroxyquinolinato)zinc, and elemental sulfur or bis(8-hydroxyquinolinato)zM, wherein M is a metal ion and the value of z is equivalent to the oxidation state of the metal ion.

Abstract: Precursors for use in depositing tellurium-containing films on substrates such as wafers or other microelectronic device substrates, as well as associated processes of making and using such precursors, and source packages of such precursors. The precursors are useful for deposition of Ge2Sb2Te5 chalcogenide thin films in the manufacture of nonvolatile Phase Change Memory (PCM), by deposition techniques such as chemical vapor deposition (CVD) and atomic layer deposition (ALD).

Abstract: Provided in one embodiment is a method of forming an inorganic nanowire, comprising: providing an elongated organic scaffold; providing a plurality of inorganic nanoparticles attached to the organic scaffold along a length of the organic scaffold; and fusing the nanoparticles attached to the organic scaffold to form an inorganic nanowire.

Abstract: A method of making a colloidal solution of high confinement semiconductor nanocrystals includes: forming a first solution by combining a solvent, growth ligands, and at most one semiconductor precursor; heating the first solution to the nucleation temperature; and adding to the first solution, a second solution having a solvent, growth ligands, and at least one additional and different precursor than that in the first solution to form a crude solution of nanocrystals having a compact homogenous semiconductor region. The method further includes: waiting 0.5 to 20 seconds and adding to the crude solution a third solution having a solvent, growth ligands, and at least one additional and different precursor than those in the first and second solutions; and lowering the growth temperature to enable the formation of a gradient alloy region around the compact homogenous semiconductor region, resulting in the formation of a colloidal solution of high confinement semiconductor nanocrystals.

Abstract: A process for producing nanoparticles incorporating ions selected from groups 13, 16, and 11 or 12 of the periodic table, and materials produced by the process. In an embodiment, the process includes effecting conversion of a nanoparticle precursor composition comprising group 13, 16, and 11 or 12 ions to the material of the nanoparticles in the presence of a selenol compound. Other embodiments include a process for fabricating a thin film including nanoparticles incorporating ions selected from groups 13, 16, and 11 or 12 of the periodic table as well as a process for producing a printable ink formulation including the nanoparticles.

Abstract: An ink composition for forming a chalcogenide semiconductor film and a method for forming the same are disclosed. The ink composition includes a solvent, a plurality of metal chalcogenide nanoparticles and at least one selected from the group consisted of metal ions and metal complex ions. The metal ions and/or complex ions are distributed on the surface of the metal chalcogenide nanoparticles and adapted to disperse the metal chalcogenide nanoparticles in the solvent. The metals of the metal chalcogenide nanoparticles, the metal ions and the metal complex ions are selected from a group consisted of group I, group II, group III and group IV elements of periodic table and include all metal elements of a chalcogenide semiconductor material.

Abstract: A material and method for producing mesostructured materials with multiple functionalities that are independently adjustable and collectively optimizable is provided. The method uses a series of discrete synthesis steps under otherwise mutually incompatible conditions, e.g., from acidic, alkaline, and/or non-aqueous solutions, allows different functionalities to be introduced to the materials and optimized. To illustrate the method, cubic mesoporous silica films were prepared from strongly acidic solutions that were separately functionalized under highly alkaline conditions to incorporate hydrophilic aluminosilica moieties and under non-aqueous conditions to introduce perfluorosulfonic-acid surface groups.

Abstract: The invention is directed to a method for producing non-oxide semiconductor nanoparticles, the method comprising: (a) subjecting a combination of reaction components to conditions conducive to microbially-mediated formation of non-oxide semiconductor nanoparticles, wherein said combination of reaction components comprises i) anaerobic microbes, ii) a culture medium suitable for sustaining said anaerobic microbes, iii) a metal component comprising at least one type of metal ion, iv) a non-metal component containing at least one non-metal selected from the group consisting of S, Se, Te, and As, and v) one or more electron donors that provide donatable electrons to said anaerobic microbes during consumption of the electron donor by said anaerobic microbes; and (b) isolating said non-oxide semiconductor nanoparticles, which contain at least one of said metal ions and at least one of said non-metals.