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US 11,926,776 B2Granted
Films comprising bright silver based quaternary nanostructures
AssigneeShoei Chemical Inc.
InventorsRavisubhash Tangirala, Jay Yamanaga, Wenzhou Guo, Christopher Sunderland, Ashenafi Damtew Mamuye, Chunming Wang, Eunhee Hwang, Nahyoung Kim
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Abstract
Disclosed are films comprising Ag, In, Ga, and S (AIGS) nanostructures and at least one ligand bound to the nanostructures. In some embodiment, the AIGS nanostructures have a photon conversion efficiency of greater than 32% and a peak wavelength emission of 480-545 nm. In some embodiments, the nanostructures have an emission spectrum with a FWHM of 24-38 nm.
Claims19
A method of preparing a film comprising Ag, In, Ga, and S (AIGS) nanostructures, comprising:
- admixing at least one organic resin with AIGS nanostructures and at least one ligand to form an admixture;
- preparing a first film comprising the admixture on a first barrier layer;
- curing the film by UV irradiation and/or baking;
- and
- encapsulating the first film between the first barrier layer and a second barrier layer;
- wherein the encapsulated film exhibits a photon conversion efficiency (PCE) of greater than 32% at a peak emission wavelength of about 480-545 nm, when excited using a blue light source with a wavelength of about 450 nm;
- wherein the nanostructures have an emission spectrum with a full width half maximum (FWHM) of less than 40 nm, and wherein the average diameter of the nanostructures is less than 10 nm by TEM.
4 more elements
Dependencies are inferred from the claim text.