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US 12,258,506 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 when excited using a blue light source with a wavelength of about 450 nm.
Claims17
Nanostructures comprising:
- Ag, In, Ga, and S (AIGS);
- and
- at least one ligand,
- wherein the nanostructures comprise a gradient of more gallium at a surface of the nanostructures to less gallium in a center of the nanostructures;
- wherein the nanostructures have a peak emission wavelength (PWL) between 480 and 545 nm;
- wherein the nanostructures have an emission spectrum with a full width half maximum (FWHM) of less than 40 nm;
- and
- wherein the nanostructures have an emission quantum yield (QY) of 80 to 99.9%.
5 more elements
Dependencies are inferred from the claim text.