Granted Patent B2

US 8,765,025 · App. 12/797,251 · Granted Jul 1, 2014

Abstract

Claims (27)

1. A composition comprising a silver nanoparticle having a stabilizer associated with a surface of the silver nanoparticle, the stabilizer consisting of an organoamine stabilizer, and a solvent,

wherein the organoamine stabilizer is a primary alkylamine having at least 9 carbon atoms,

wherein the solvent is one or more of decahydronaphthalene, cis-decahydronaphthalene and trans-decahydronaphthalene, and

wherein a silver content in the silver nanoparticle is from about 80 wt. % to about 95 wt. % based on the total weight of the silver nanoparticle and the organoamine stabilizer.

2. The composition of claim 1 , wherein a resulting printing of the composition of claim 1 has an edge height to a center height ratio of about 1.2 to about 0.8.

3. The composition of claim 1 , wherein a resulting printing of the composition of claim 1 has a surface roughness of about 15 nm to about 0 nm.

4. The composition of claim 1 , wherein the silver nanoparticle is selected from the group consisting of silver, silver-copper composite, silver-gold-copper composite, silver-gold-palladium composite and combinations thereof.

5. The composition of claim 1 , wherein the organoamine stabilizer is selected from the group consisting of nonylamine, decylamine, hexadecylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, and combinations thereof.

6. The composition of claim 1 , wherein the composition further comprises a co-solvent,

wherein the solvent and the co-solvent each has the following Hansen solubility parameters: a dispersion parameter of about 16 MPa 0.5 or more, and a sum of a polarity parameter and a hydrogen bonding parameter of about 8.0 MPa 0.5 or less, and

wherein the co-solvent is selected from the group consisting of tetradecane, hexadecane, methyl naphthalene, tetrahydronaphthalene, tetramethyl benzene, toluene, xylene, ethylbenzene and trimethylbenzene.

7. The composition of claim 6 , wherein a resulting printing of the composition has an edge height to center height ratio of about 1.2 to about 0.8 and a surface roughness of about 15 nm or less.

8. The composition of claim 6 , wherein the silver nanoparticle is selected from the group consisting of silver, silver-copper composite, silver-gold-copper composite, silver-gold-palladium composite and combinations thereof.

9. The composition of claim 6 , wherein the organoamine stabilizer is selected from the group consisting of nonylamine, decylamine, hexadecylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, and combinations thereof.

10. The composition of claim 6 , wherein the solvent and the co-solvent each has the following Hansen solubility parameters: the dispersion parameter of about 18 MPa 0.5 or more, and the sum of the polarity parameter and the hydrogen bonding parameter of about 5.5 MPa 0.5 or less.

11. The composition of claim 1 consisting essentially of the silver nanoparticle, the organoamine stabilizer associated with the surface of the silver nanoparticle, and the solvent.

12. A method of forming conductive features on a substrate, the method comprising:

providing a liquid composition comprising a silver nanoparticle having a stabilizer associated with a surface of the silver nanoparticle, the stabilizer consisting of an organoamine stabilizer, and a solvent, wherein the organoamine stabilizer is a primary alkylamine having at least 9 carbon atoms, wherein the solvent is one or more of decahydronaphthalene, cis-decahydronaphthalene and trans-decahydronaphthalene, and wherein a silver content in the silver nanoparticle is from about 80 wt. % to about 95 wt. % based on the total weight of the silver nanoparticle and the organoamine stabilizer,

depositing the liquid composition onto the substrate to form deposited features, and

heating the deposited features on the substrate to a temperature from about 70° C. to about 200° C. to form conductive features on the substrate.

13. The method of claim 12 , wherein the conductive features on the substrate have an edge height to center height ratio from about 1.2 to 0.8, a surface roughness about 15 nm or less and a conductivity about 1.0×10 4 S/cm or more.

14. The method of claim 12 , wherein the solvent is cis-decahydronaphthalene, and the metal nanoparticle is silver nanoparticle.

15. The method of claim 12 , wherein the organoamine stabilizer is selected from the group consisting of nonylamine, decylamine, hexadecylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, diaminopentane, diaminohexane, diaminoheptane, diaminooctane, diaminononane, diaminodecane, diaminooctane, dipropylamine, dibutylamine, dipentylamine, dihexylamine, diheptylamine, dioctylamine, dinonylamine, didecylamine, methylpropylamine, ethylpropylamine, propylbutylamine, ethylbutylamine, ethylpentylamine, propylpentylamine, butylpentylamine, tributylamine, trihexylamine and combinations thereof.

16. A composition comprising a silver nanoparticle having a stabilizer associated with a surface of the silver nanoparticle, the stabilizer consisting of an organoamine stabilizer, and a solvent,

the organoamine stabilizer is hexadecylamine,

wherein the solvent is one or more of decahydronaphthalene, cis-decahydronaphthalene and trans-decahydronaphthalene, and

wherein a silver content in the silver nanoparticle is from about 80 wt. % to about 95 wt. % based on the total weight of the silver nanoparticle and the organoamine stabilizer.

Assignments (10)