US2018226548A1PendingUtilityA1

Methods for fabricating quantum dot polymer films

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Assignee: NANOCO TECHNOLOGIES LTDPriority: Mar 4, 2014Filed: Mar 30, 2018Published: Aug 9, 2018
Est. expiryMar 4, 2034(~7.6 yrs left)· nominal 20-yr term from priority
Inventors:Cong-Duan VoImad Naasani
Y10S977/897Y10S977/774C08F 2/48C09K 11/883C08F 120/18C08F 2/38B82Y 40/00C09K 11/02B82Y 20/00Y10S977/95H01L 33/501H01L 33/507H10H 20/8515H10H 20/8511C08J 5/18
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Claims

Abstract

The addition of a chain transfer agent (CTA) or a reversible-addition fragmentation chain transfer agent (RAFT CTA) such as (2-(dodecylthiocarbonothioylthio)-2-methylpropionic acid) during the formation of quantum dot polymer films yields films characterized by high and stable quantum yields.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A quantum dot (QD) polymer film prepared by the process comprising:
 combining a quantum dot suspension with at least one chain transfer agent (CTA) to form a QD-CTA mixture;   adding a methyl(acrylate) monomer, a photoinitiator, and a crosslinker to the QD-CTA mixture to form a QD-CTA-resin mixture;   depositing the QD-CTA-resin mixture on a substrate; and   curing the QD-CTA-resin mixture with UV light to form a film.   
     
     
         2 . The QD polymer film recited in  claim 1 , wherein the quantum dot suspension comprises toluene. 
     
     
         3 . The QD polymer film recited in  claim 1 , wherein the quantum dot suspension comprises an aliphatic hydrocarbon-based solvent. 
     
     
         4 . The QD polymer film recited in  claim 1 , wherein the chain transfer agent (CTA) is a trithiocarbonate. 
     
     
         5 . The QD polymer film recited in  claim 1 , wherein the chain transfer agent (CTA) is a reversible-addition fragmentation chain transfer agent (RAFT CTA). 
     
     
         6 . The QD polymer film recited in  claim 5 , wherein the RAFT CTA is 2-(dodecylthiocarbonothioylthio)-2-methylpropionic acid. 
     
     
         7 . The QD polymer film recited in  claim 5 , wherein the RAFT CTA is a thiocarbonylthio compound. 
     
     
         8 . The QD polymer film recited in  claim 7 , wherein the thiocarbonylthio compound is a dithiobenzoate. 
     
     
         9 . The QD polymer film recited in  claim 7 , wherein the thiocarbonylthio compound is a dithioester. 
     
     
         10 . The QD polymer film recited in  claim 7 , wherein the thiocarbonylthio compound is a dithiocarbamate. 
     
     
         11 . The QD polymer film recited in  claim 7 , wherein the thiocarbonylthio compound is a trithiocarbonate. 
     
     
         12 . The QD polymer film recited in  claim 7 , wherein the thiocarbonylthio compound is a xanthate. 
     
     
         13 . The QD polymer film recited in  claim 5 , wherein the RAFT CTA includes one or more carboxyl-terminated trithiocarbonates. 
     
     
         14 . The QD polymer film of  claim 1 , wherein the crosslinker is trimethyloylpropane trimethacrylate (TMPTM). 
     
     
         15 . A composition of matter, the composition comprising:
 quantum dots;   a chain transfer agent (CTA);   a methyl(acrylate) monomer;   a photoinitiator; and   a crosslinker.   
     
     
         16 . The composition of  claim 15 , further comprising a hydrocarbon-based solvent. 
     
     
         17 . The composition of  claim 15 , wherein the chain transfer agent (CTA) is a trithiocarbonate. 
     
     
         18 . The composition of  claim 15 , wherein the chain transfer agent (CTA) is a reversible-addition fragmentation chain transfer agent (RAFT CTA). 
     
     
         19 . The composition of  claim 18  wherein the RAFT CTA is 2-(dodecylthiocarbonothioylthio)-2-methylpropionic acid. 
     
     
         20 . The composition of  claim 18  wherein the RAFT CTA is a thiocarbonylthio compound.

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