Abstract: Embodiments of the disclosure include an electronic device comprising a first electrode, a second electrode, a first layer disposed between the first electrode and the second electrode, the first layer comprising a metal-halide perovskite material, and an adhesive layer disposed between the first layer and the second electrode, wherein the adhesive layer comprises an organic material. Embodiments of the disclosure generally relate to photovoltaic module products, such as photovoltaic cells, photovoltaic devices and photovoltaic modules that include an absorber layer that comprise a perovskite material. Embodiments of the disclosure include an improved perovskite solar cell architecture that includes one or more buffer layers disposed within the multilayer stack of thin films used to form a solar cell that can exhibit high solar cell performance, and provide stronger adhesion between adjacent layers and/or cohesion within a layer within the multilayer stack used to form the solar cell device.

Abstract: A method can comprise providing an ink comprising reactants, a complexing agent, and a solvent, depositing the ink onto a substrate to form a wet film, drying the wet film to form a precursor layer, and annealing the precursor layer to form a perovskite film. The reactants can comprise a first and a second cation, a first metal, and a first and a second anion, wherein the first and second cations are different from each other, and the first and second anions are different from each other. The complexing agent can comprise a heterocyclic donor material. The perovskite film can comprise a mixed-cation mixed-halide perovskite material, and less than 5% by mass of the complexing agent. The perovskite film can also be formed using a one-step process.

Abstract: A buffer layer for protecting an organic layer during high-energy deposition of an electrically conductive layer is disclosed. Buffer layers in accordance with the present invention are particularly well suited for use in perovskite-based single-junction solar cells and double-junction solar cell structures that include at least one perovskite-based absorbing layer. In some embodiments, the buffer layer comprises a layer of oxide-based nanoparticles that is formed using solution-state processing, in which a solution comprising the nanoparticles and a volatile solvent is spin coated onto a structure that includes the organic layer. The solvent is subsequently removed in a low-temperature process that does not degrade the organic layer.

Abstract: A tower elevating assembly generally includes a platform assembly configured to move between a first elevation position and a second elevation position, a tower having a track assembly, wherein the track assembly includes first and second track portions, each being a single continuous structure, and a carriage assembly for providing support to the platform and moving within the track. A kit for a tower elevating assembly includes a platform assembly, a tower having a track assembly, and a carriage assembly configured for coupling with the platform assembly and the tower.

Abstract: A tower elevating assembly generally includes a platform assembly configured to move between a first elevation position and a second elevation position, a tower having a track assembly, wherein the track assembly includes first and second track portions, each being a single continuous structure, and a carriage assembly for providing support to the platform and moving within the track. A kit for a tower elevating assembly includes a platform assembly, a tower having a track assembly, and a carriage assembly configured for coupling with the platform assembly and the tower.

Abstract: A method can comprise providing an ink comprising reactants, a complexing agent, and a solvent, depositing the ink onto a substrate to form a wet film, drying the wet film to form a precursor layer, and annealing the precursor layer to form a perovskite film. The reactants can comprise a first and a second cation, a first metal, and a first and a second anion, wherein the first and second cations are different from each other, and the first and second anions are different from each other. The complexing agent can comprise a heterocyclic donor material. The perovskite film can comprise a mixed-cation mixed-halide perovskite material, and less than 5% by mass of the complexing agent. The perovskite film can also be formed using a one-step process.

Abstract: A tower elevating assembly generally includes a platform assembly configured to move between a first elevation position and a second elevation position, a tower having a track assembly, wherein the track assembly includes first and second track portions, each being a single continuous structure, and a carriage assembly for providing support to the platform and moving within the track. A kit for a tower elevating assembly includes a platform assembly, a tower having a track assembly, and a carriage assembly configured for coupling with the platform assembly and the tower.

Abstract: In one embodiment of the present disclosure, a ramp and platform interface, includes a platform side defining one or more slots, the upper end of the one or more slots defined by a downwardly and inwardly extending lip; at least one support flange including a body, a lip disposed at the top edge of the body, and a flange section outwardly extending from the body, wherein the at least one support flange is selectively mounted to the platform side via the one or more slots; and a ramp section defining a support surface on a top side thereof and one or more support flange engagement structure on the bottom side thereof, wherein the ramp section is disposed in a supporting relationship with the platform side via cooperation of the flange section and the support flange engagement structure.

Abstract: A buffer layer for protecting an organic layer during high-energy deposition of an electrically conductive layer is disclosed. Buffer layers in accordance with the present invention are particularly well suited for use in perovskite-based single-junction solar cells and double-junction solar cell structures that include at least one perovskite-based absorbing layer. In some embodiments, the buffer layer comprises a layer of oxide-based nanoparticles that is formed using solution-state processing, in which a solution comprising the nanoparticles and a volatile solvent is spin coated onto a structure that includes the organic layer. The solvent is subsequently removed in a low-temperature process that does not degrade the organic layer.

Abstract: A lift assembly generally includes a platform assembly configured to move between a first elevation position and a second elevation position, a tower assembly having a track assembly, wherein the track assembly includes first and second track portions, each being a single continuous structure, and a carriage assembly for providing support to the platform and moving within the track. A kit for a lift assembly includes a platform assembly, a tower assembly having a track assembly, and a carriage assembly configured for coupling with the platform assembly and the tower assembly.

Abstract: A 2-terminal multi-junction solar cell having a thin film of metal halide semiconductor as the top solar-cell material and crystalline silicon as the bottom solar-cell material. In the illustrative embodiment, the top solar-cell material is a perovskite of the form AM(IxH1-x)3, where A is a cation, preferably methylammonium (CH3NH3), formamidinium ([R2N—CH?NR2]+), or cesium; M is metal, preferably Pb, Sn, Ge; H is a halide, preferably Br or Cl; and x=iodine fraction, in the range of 0 to 1, inclusive. The integration of the two solar-cell materials is enabled by the use of a tunnel junction composed of indirect band-gap material.

Abstract: A buffer layer for protecting an organic layer during high-energy deposition of an electrically conductive layer is disclosed. Buffer layers in accordance with the present invention are particularly well suited for use in perovskite-based single-junction solar cells and double-junction solar cell structures that include at least one perovskite-based absorbing layer. In some embodiments, the buffer layer comprises a layer of oxide-based nanoparticles that is formed using solution-state processing, in which a solution comprising the nanoparticles and a volatile solvent is spin coated onto a structure that includes the organic layer. The solvent is subsequently removed in a low-temperature process that does not degrade the organic layer.

Abstract: A bird propelled rotating hummingbird feeder. A pivot housing includes a central axis and a central hole. A plurality of fins is configured as dual opposing fin sets, where each fin is angled at an oblique angle with respect to a plane passing perpendicularly through the central axis and each fin set comprises at least three angled fins attached to the pivot housing so as to be symmetrically located opposite the other dual opposing fin set with the pivot housing centered between the dual opposing fin sets. A feeder jar housing integrated into each of the dual opposing fin sets central fin. A pivot cable is inserted through the central hole and a bearing element it is attached to a bottom end of the pivot cable within the pivot housing. A hanger is attached to a top end of the pivot cable.

Abstract: A bird propelled rotating hummingbird feeder. A pivot housing includes a central axis and a central hole. A plurality of fins is configured as dual opposing fin sets, where each fin is angled at an oblique angle with respect to a plane passing perpendicularly through the central axis and each fin set comprises at least three angled fins attached to the pivot housing so as to be symmetrically located opposite the other dual opposing fin set with the pivot housing centered between the dual opposing fin sets. A feeder jar housing integrated into each of the dual opposing fin sets central fin. A pivot cable is inserted through the central hole and a bearing element it is attached to a bottom end of the pivot cable within the pivot housing. A hanger is attached to a top end of the pivot cable.

Abstract: A buffer layer for protecting an organic layer during high-energy deposition of an electrically conductive layer is disclosed. Buffer layers in accordance with the present invention are particularly well suited for use in perovskite-based single-junction solar cells and double-junction solar cell structures that include at least one perovskite-based absorbing layer. In some embodiments, the buffer layer comprises a layer of oxide-based nanoparticles that is formed using solution-state processing, in which a solution comprising the nanoparticles and a volatile solvent is spin coated onto a structure that includes the organic layer. The solvent is subsequently removed in a low-temperature process that does not degrade the organic layer.

Abstract: In one embodiment of the present disclosure, a ramp and platform interface, includes a platform side defining one or more slots, the upper end of the one or more slots defined by a downwardly and inwardly extending lip; at least one support flange including a body, a lip disposed at the top edge of the body, and a flange section outwardly extending from the body, wherein the at least one support flange is selectively mounted to the platform side via the one or more slots; and a ramp section defining a support surface on a top side thereof and one or more support flange engagement structure on the bottom side thereof, wherein the ramp section is disposed in a supporting relationship with the platform side via cooperation of the flange section and the support flange engagement structure.

Abstract: A support assembly suitable for use in a modular ramp and platform assembly is disclosed. Additionally, an interface between components of the platform assembly, including, for example, the interface between the ramp section and the deck or platform section is provided, and may include support flanges that operatively interact with one or more slots positioned on the platform section.

Abstract: A 2-terminal multi-junction solar cell having a thin film of metal halide semiconductor as the top solar-cell material and crystalline silicon as the bottom solar-cell material. In the illustrative embodiment, the top solar-cell material is a perovskite of the form AM(IxH1-x)3, where A is a cation, preferably methylammonium (CH3NH3), formamidinium ([R2N—CH?NR2]+), or cesium; M is metal, preferably Pb, Sn, Ge; H is a halide, preferably Br or Cl; and x=iodine fraction, in the range of 0 to 1, inclusive. The integration of the two solar-cell materials is enabled by the use of a tunnel junction composed of indirect band-gap material.

Abstract: A TPM system wheel unit measures rotational period over a number of wheel revolutions, calculates a value of a period of the revolutions and wirelessly transmits the calculated value of the period to a tire pressure monitoring system receiver in the vehicle mounting the wheel. Alternatively, each wheel unit transmits an RF burst of a predetermined length and a received RF burst envelope modulated with a periodic modulation pattern is used to calculate the period of one wheel rotation for each wheel. A central vehicle electronic control unit monitors wheel speed signals for each wheel of the vehicle and calculates a period for the wheel speed signal for each wheel of the vehicle, bounded by a rolling window which may be of variable length. The calculated values are compared and the wheel unit and the wheel location are correlated therefrom.

Abstract: A connection assembly, in accordance with one embodiment of the present disclosure, generally includes a first portion, wherein the first portion includes a body made substantially from plastic material and an adjustable interface made substantially from metal material, and a second portion couplable to the first portion.