[Problem] The purpose of the present invention is to provide a novel optical functional material in which silver nanoparticles are used. [Solution] According to the present invention, a ternary composite formed by mixing silver nanoparticles, an organic semiconductor, and a clay in a liquid phase is provided. The organic semiconductor is preferably an organic charge-transfer complex, and more preferably a charge-transfer boron polymer. The clay is a layered silicate mineral, and preferably smectite. The present invention also provides an antibacterial agent, a photoelectric converter, and a photosensitive pointing device using the ternary composite.

This invention relates to a supported polymer heterostructure and methods of manufacture. The heterostructure is suitable for use in a range of applications which require semiconductor devices, including photovoltaic devices and light-emitting diodes.

A method of improving performance of a photovoltaic device can include modifying a surface energy level of a nanocrystal through ligand exchange. A photovoltaic device can include a layer that includes a nanocrystal with a surface energy modified through ligand exchange.

A photoelectric conversion element including a first electrode, a photoelectric conversion layer, and a second electrode, in this order, wherein the photoelectric conversion layer contains a quantum dot and an organic compound, satisfies formula (1), a predetermined carrier mobility, and a predetermined energy level, and reduces a residual image, E2>E1 formula (1). E1 (eV) is the energy at a short-wavelength edge in a wavelength region of light detected by the photoelectric conversion element. E2 (eV) is the band gap of the organic compound.

A composite interface transport material-based perovskite photovoltaic, light emission and light detection multi-functional device and a preparation method therefor. The multi-functional device comprises a transparent conductive glass, a composite electron transport layer, a perovskite active layer, a composite hole transport layer and a metal electrode layer which are sequentially arranged in a stacked manner from bottom to top. The work functions of the interface transport layers are adjusted by means of the multi-element interface transport materials, so that the work functions of the electron transport layer and the hole transport layer are respectively levelled with conduction band and valence band positions of the perovskite active layer. According to experiment result comparisons, the photoelectric conversion efficiency and the luminous efficiency of the perovskite multi-functional device, after energy band regulation, are significantly increased.

A photovoltaic collector includes a photovoltaic cell including a first conduction layer, a second conduction layer, and a photovoltaic layer absorbing incident light and generating electric current. The photovoltaic layer is electrically connected to the first conduction layer on a first side of the photovoltaic layer and to the second conduction layer on a second side opposite to the first side. The first conduction layer is an ultrastatic conducting layer being made using ultrasonic spray technology. The photovoltaic collector further includes a plurality of connection units disposed along on an outer peripheral edge of the photovoltaic collector. Each connection unit is adapted to connect with an adjacent connection unit of an adjacent photovoltaic collector to tessellate and electrically interconnect and interlock the photovoltaic collector with a plurality of adjacent photovoltaic collectors without requiring additional cable wires.

Provided are a core-shell structured perovskite particle light-emitter, a method of preparing the same, and a light emitting device using the same. The core-shell structured perovskite particle light-emitter or metal halide perovskite particle light-emitter has a perovskite nanocrystal structure and a core-shell structured particle structure. Therefore, in the perovskite particle light-emitter of the present invention, as a shell is formed of a substance having a wider band gap than that of a core, excitons may be more dominantly confined in the core, and durability of the nanocrystal may be improved to prevent exposure of the core perovskite to the air using a perovskite or inorganic semiconductor, which is stable in the air, or a polymer.

An object of the present invention is to provide a curable composition comprising a fluorescent particle containing a perovskite compound, wherein a decrease in the quantum yield of a film formed by curing the curable composition due to heat can be suppressed; a film formed by curing the curable composition; and a laminated body and a display apparatus comprising the film. Provided are a curable composition comprising a fluorescent particle (A) containing a perovskite compound, a photopolymerizable compound (B), a photopolymerization initiator (C), and an antioxidant (D); a film formed by curing the curable composition; and a laminated body and a display apparatus comprising the film.

A photovoltaic cell includes a substrate layer, an anode layer on the substrate layer, an active layer on the anode layer, and a cathode layer on the active layer, wherein the active layer comprises a plurality of disparately sized n-type and p-type nano-particles of different semiconductor materials randomly distributed in a conductive polymer blend. The n-type nano-particles can include either ZnO or In.sub.2O.sub.3 nano-particles, and the p-type nano-particles can include either NiO or La.sub.2O.sub.3 nano-particles. The conductive polymer blend can include P3HT. The bandgaps of the nano-particles have corresponding energies ranging from the near ultraviolet to the far infrared.

A quantum dot includes an inorganic particle, and an organic ligand and an inorganic ligand on a surface of the inorganic particle, and the molar percentage of the inorganic ligand relative to the total amount of the inorganic ligand and the organic ligand is 25% or more and 99.8% or less.