Method for recycling an led
AssigneesParis Sciences Et Lettres, Centre National De La Recherche Scientifique, Ecole Nationale Superieure de Chimie de Paris
InventorsMoheddine WEHBIE, Vincent SEMETEY, Michel MINIER
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Abstract
A method for extracting and separating at least one component from a LED, the LED including at least one metal, at least one phosphor and at least one layer including polydimethylsiloxane. Also, an LED having at least one layer including polydimethylsiloxane, wherein the at least one layer comprising polydimethylsiloxane is depolymerized by the action of a solution including a solvent and a fluorine salt.
Claims11
1-10. (canceled)
A method for extracting and separating at least one component of an LED, the LED comprising at least one metal, at least one phosphor and at least one layer comprising polydimethylsiloxane, said method comprising the following steps:
- a) at least partial depolymerization of at least one layer comprising polydimethylsiloxane using a solution comprising a solvent and a fluoride salt;
- b) separation of the at least one phosphor and the rest of the LED obtained in step a);
- c) contacting at least one acidic solution with the rest of the LED obtained in step b);
- and
- d) separation of the at least one acidic solution comprising at least part of the at least one metal and the rest of the LED obtained in step c).
An LED comprising at least one layer comprising polydimethylsiloxane, wherein the at least one layer comprising polydimethylsiloxane is depolymerized by the action of a solution comprising a solvent and a fluorine salt.
Dependencies are inferred from the claim text.