US Patent 8211399 - Making metal sulfide nanocrystals

http://www.freepatentsonline.com/8211399.html

This patent from Foxconn teaches a method to reduce the cost and complexity of producing metal sulfide nanocrystals which are useful for LED and solar cell devices. Claim 1 reads:

1. A method for making metal sulfide nanocrystals comprising:

providing metal inorganic salt powder in a container;

adding superfluous mercaptan into the container;

stirring the superfluous mercaptan and the metal inorganic salt uniformly to obtain a precursor mixture and heating the precursor mixture to obtain the metal sulfide nanocrystals; and

separating the metal sulfide nanocrystals.