Mixed semiconductor nanocrystal compositions
US7888855B2 · kind B2 · utility
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34Claims
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Key dates
| Filing date | Jul 16, 2008 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Sep 11, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y30/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Composition comprising one or more energy donors and one or more energy acceptors, wherein energy is transferred from the energy donor to the energy acceptor and wherein: the energy acceptor is a colloidal nanocrystal having a lower band gap energy than the energy donor; the energy donor and the energy acceptor are separated by a distance of 40 nm or less; wherein the average peak absorption energy of the acceptor is at least 20 meV greater than the average peak emission energy of the energy donor; and wherein the ratio of the number of energy donors to the number of energy acceptors is from about 2:1 to about 1000:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.