Nanoparticles Having Continuous Photoluminescence
OwnerTodd Krauss, Megan Hahn +1inventors
InventorsTodd Krauss, Megan Hahn, Xiaoyong Wang
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Abstract
A nanoparticle comprising a ternary core comprising Cd, Zn and Se; and a shell comprising Zn and Y, wherein Y is Se or S or a combination thereof. The Cd and Zn are non-homogenously distributed in the ternary core such that the nanoparticle exhibits continuous photoluminescence for extended periods of time. Also provided are methods for preparing and methods of using the nanoparticles which exhibit continuous photoluminescence.
Claims20
1) A nanoparticle comprising:
- i) a ternary core comprising Cd, Zn and Se;
- and
- ii) a shell comprising Zn and Y, wherein Y is Se or S or a combination thereof,
- wherein the Cd and Zn are non-homogenously distributed in the ternary core such that the photoluminescence exhibited by the nanoparticle is continuous as determined by a lack of correlation between fluctuations in photoluminescence intensity over a period of at least 200 seconds.
7). A composition comprising nanoparticles according to claim 1, wherein the size distribution of the nanoparticles is substantially monodisperse and the average diameter of the nanoparticles is between 1 nm and 100 nm.
8) composition of claim 7, wherein the average diameter of the nanoparticles is between 2 nm and 7 nm.
Dependencies are inferred from the claim text.