Viscouse dispersion of semiconductor nanoparticles
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United States of America Patent
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Issued Date -
Sep 25, 2008
app pub date -
Mar 22, 2007
filing date -
Mar 22, 2007
priority date (Note) -
Abandoned
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Abstract
The present invention provides a viscous dispersion comprising crystalline semiconductor nanoparticles, which is useful for formation of a porous semiconductor membrane of high purity at a low temperature. The viscous dispersion comprises crystalline semiconductor nanoparticles dispersed in a dispersion medium, wherein the dispersion medium is a mixture comprising 53 to 92 wt % of a hydrophilic organic medium and 8 to 47 wt % of water, said hydrophilic organic medium comprising an alcohol having 3 to 5 carbon atoms as a main component, wherein the dispersion medium essentially does not contain an organic binder, an amount of said organic binder being less than 2 wt % of the medium, and wherein the dispersion comprises 8 to 40 wt % of the dispersed crystalline semiconductor nanoparticles based on the total amount of the dispersion.
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