The present technology provides a coating system including a luminophoric material. The luminophoric material is a pyridine-containing ligand chosen from a substituted or unsubstituted bidentate pyridine compound, a substituted or unsubstituted tridentate pyridine compound, or a combination of two or more thereof. Alternatively, the luminophoric material may be a fluorescent dye. The coating system may include a topcoat material, a primer material, or a combination thereof.

A method for manufacturing a vertically aligned carbon nanotube substrate includes the steps of treating a vertically aligned carbon nanotube array in an untreated state with a plasma to generate a vertically aligned carbon nanotube array in a plasma-treated state and adhering a coating onto at least a portion of the vertically aligned carbon nanotube array in the plasma-treated state to generate a vertically aligned carbon nanotube array in a coated state. The step of treating can include exposing the vertically aligned carbon nanotube substrate in the untreated state to the plasma in a plasma chamber. The step of adhering can include using a process of thermal evaporation or e-beam ablation. The method can also include the step of adhering a plurality of fluorophores to at least a portion of the vertically aligned carbon nanotube array in the coated state.

A method for manufacturing a vertically aligned carbon nanotube substrate includes the steps of treating a vertically aligned carbon nanotube array in an untreated state with a plasma to generate a vertically aligned carbon nanotube array in a plasma-treated state and adhering a coating onto at least a portion of the vertically aligned carbon nanotube array in the plasma-treated state to generate a vertically aligned carbon nanotube array in a coated state. The step of treating can include exposing the vertically aligned carbon nanotube substrate in the untreated state to the plasma in a plasma chamber. The step of adhering can include using a process of thermal evaporation or e-beam ablation. The method can also include the step of adhering a plurality of fluorophores to at least a portion of the vertically aligned carbon nanotube array in the coated state.

A quantum dot including a core including a semiconductor nanocrystal including a Group III-V compound; and a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc, selenium, and optionally sulfur, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc, sulfur, and optionally selenium, wherein the quantum dot does not include cadmium, an emission peak wavelength of the quantum dot is in a range of about 500 nanometers (nm) to about 550 nm, and an ultraviolet-visible absorption spectrum of the quantum dot includes a first exciton absorption peak and a second exciton absorption peak, a composition including the same, a composite, and an electronic device.

A quantum dot including a core including a semiconductor nanocrystal including a Group III-V compound; and a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc, selenium, and optionally sulfur, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc, sulfur, and optionally selenium, wherein the quantum dot does not include cadmium, an emission peak wavelength of the quantum dot is in a range of about 500 nanometers (nm) to about 550 nm, and an ultraviolet-visible absorption spectrum of the quantum dot includes a first exciton absorption peak and a second exciton absorption peak, a composition including the same, a composite, and an electronic device.

A radiative cooling composition comprises a first component having >55% reflectance in a wavelength range of 0.2 to 2.5 μm and a second component having >0.85 peak thermal emissivity for at least one wavelength in a range of 4-35 μm. A third pigmented component of the composition is configured to emit at least a fraction of absorbed energy, and in certain embodiments the pigmented component comprises at least one phosphor.

A radiative cooling composition comprises a first component having >55% reflectance in a wavelength range of 0.2 to 2.5 μm and a second component having >0.85 peak thermal emissivity for at least one wavelength in a range of 4-35 μm. A third pigmented component of the composition is configured to emit at least a fraction of absorbed energy, and in certain embodiments the pigmented component comprises at least one phosphor.

An article that includes a fluorescent composition having at least one of a fluorescent sensor compound and organic reporter molecules encapsulated in a microsphere structure. When encapsulated, the fluorescent sensor compound and the organic reporter molecules are distributed in a liquid organic matrix. When non-encapsulated, the remaining one of the fluorescent sensor compound and the organic reporter molecules reside in the matrix. In response to a force applied to the composition sufficient to break at least a portion of the microsphere structure, the fluorescent sensor compound and the organic reporter molecules are transformed into a non-reversible fluorescent state exhibiting a quantum yield greater than 0.2. The fluorescent state is objectively visually verifiable without physically contacting the composition.

Disclosed herein are wavelength converters and methods for making the same. The wavelength converters include a single layer of a polymeric matrix material, and one or more types of wavelength converting particles. In some embodiments the wavelength converters include first and second types of wavelength converting particles that are distributed in a desired manner within the single layer of polymeric matrix material. Methods of forming such wavelength converters and lighting devices including such wavelength converters are also disclosed.

Disclosed herein are wavelength converters and methods for making the same. The wavelength converters include a single layer of a polymeric matrix material, and one or more types of wavelength converting particles. In some embodiments the wavelength converters include first and second types of wavelength converting particles that are distributed in a desired manner within the single layer of polymeric matrix material. Methods of forming such wavelength converters and lighting devices including such wavelength converters are also disclosed.