摘要:
An infrared up-conversion device for converting LWIR radiation to NIR radiation includes a distribution of core-shell nano-sized particles within a transparent binder material. The core-shell particles can be composed of a HgTe core and a CdTe shell. The up-conversion device can be used with a NIR imager to function as an LWIR imager without the need for cryogenic cooling.
摘要:
Disclosed herein is a polymeric film, the film comprising a polymeric matrix material, a plurality of perovskite nanocrystals and/or aggregates of perovskite nanocrystals dispersed throughout the polymeric matrix material. There is also disclosed a perovskite polymer resin composition, a perovskite-polymer resin composition, a perovskite ink and a method of forming a luminescent film using any one of the compositions or ink. Preferably, the perovskite material is a lead halide perovskite containing a cation selected from Cs, an alkylammonium ion, or a formamidinium ion. The polymeric matrix is preferably formed from monomers comprising a vinyl or an acrylate group.
摘要:
The present discloser relates to an infrared device using intra-band electron transition of non-stoichiometric quantum dots and, more specifically, to non-stoichiometric quantum dot nanoparticles and an infrared device comprising the nanoparticles, in which the nanoparticles comprise quantum dot cores and nonthiol ligands bonded to the core and emits infrared rays from electron transition between discrete energy levels in the band. The infrared device has an effect of emitting infrared rays, particularly, mid-infrared rays or far-infrared rays, by using the electron transition between discrete energy levels in the band of quantum dots in which the proportion of a metal is higher than that of a chalcogen. In addition, the quantum dots are prepared by containing nonthiol ligands, and thus, compared with a conventional thiol ligand, ligand substitution is very easy while the n-type doping of quantum dots is maintained.
摘要:
A polymer composite comprising quantum dots and polymerized units of at least one compound of formula (I) wherein R1 is hydrogen or methyl and R2 is a C6-C20 aliphatic polycyclic substituent.
摘要:
A photosensitive resin composition includes about 60% by weight to about 95% by weight of a solvent based on a total weight of the photosensitive resin composition and about 5% by weight to about 40% by weight of a solid based on the total weight of the photosensitive resin composition. The solid includes about 5% by weight to about 90% by weight of quantum dots based on a total weight of the solid. A center luminescence wavelength of the quantum dots is about 900 nm to about 2000 nm.
摘要:
A nanocrystal electroluminescence device comprising a polymer hole transport layer, a nanocrystal light-emitting layer and an organic electron transport layer wherein the nanocrystal light-emitting layer is independently and separately formed between the polymer hole transport layer and the organic electron transport layer. According to the nanocrystal electroluminescence device, since the hole transport layer, the nanocrystal light-emitting layer and the electron transport layer are completely separated from one another, the electroluminescence device provides a pure nanocrystal luminescence spectrum having limited luminescence from other organic layers and substantially no influence by operational conditions, such as voltage. Further, a method for fabricating the nanocrystal electroluminescence device.
摘要:
The present disclosure relates to the field of preparation of compound semiconductor nanomaterials, and in particular to a method for in-situ modification of mercury quantum dots in a traditional thermal injection process. It is characterized in that, in the traditional thermal injection process for synthesis of HgTe quantum dots, after a certain reaction time, a low boiling point polar solvent that is incompatible with a reaction solvent is rapidly injected, so that an interfacial separation of two liquid phases occurs in a mixed reaction, and then a selective crystal oriented surface modification is conducted on surfaces of mercury quantum dots.
摘要:
A light sensitive device including a substrate and high pass filter semiconductor nanoparticles distributed on the substrate. The substrate includes at least one photosensor, and the semiconductor nanoparticles are high pass filters in UV-visible-NIR light range. The light sensitive device has a density of the semiconductor nanoparticles per surface unit of greater than 5×109 nanoparticles.cm−2. Also, a process for the manufacture of the light sensitive device, and an image sensor that includes the light sensitive device.
摘要:
A method of producing nanoparticles comprises effecting conversion of a molecular cluster compound to the material of the nanoparticles. The molecular cluster compound comprises a first ion and a second ion to be incorporated into the growing nanoparticles. The conversion can be effected in the presence of a second molecular cluster compound comprising a third ion and a fourth ion to be incorporated into the growing nanoparticles, under conditions permitting seeding and growth of the nanoparticles via consumption of a first molecular cluster compound.