Broadband optical upconversion by energy transfer from dye antenna to upconverting crystal
US8724214B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2012 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Jan 19, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y20/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
An optical upconverting nanomaterial includes a nanocrystal, a ligand layer directly bonded to the nanocrystal, and an optical antenna directly or indirectly bonded to the nanocrystal. The nanocrystal includes a transition metal-doped material exhibiting upconversion to optical wavelengths. The transition metal-doped material includes energy transfer facilitating transition metal dopants and (not necessarily distinct) emitter transition metal dopants, where an absorption spectrum of the energy transfer facilitating transition metal dopants overlaps with an emission spectrum of the optical antenna. The optical upconverting nanomaterial has at least one linear dimension (e.g., width or thickness) that is less than 150 nm in extent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.