Shawn P Williams

US Patent:

7321133, Jan 22, 2008

Filed:

Nov 16, 2005

Appl. No.:

11/274918

Inventors:

Shawn P. Williams - Pittsburgh PA, US
Troy D. Hammond - Pittsburg PA, US
Darin W. Laird - Pittsburg PA, US

Assignee:

Plextronics, Inc. - Pittsburgh PA

International Classification:

H01L 29/861

US Classification:

257 40, 257E51025, 257E51029, 257E29327, 257E23018, 257E23166, 257E21053, 257E21351

Abstract:

Regio-regular polythiophenes used in diodes which are not light emitting or photovoltaic. High quality, processable thin film polymer films can be made. The thin film can have a thickness of about 50 nm to about one micron, and the conductive thin film can be applied by spin casting, drop casting, screening, ink-jetting, transfer or roll coating. The polythiophenes can be homopolymers or copolymers. The regio-regular poly(3-substitutedthiophene) can be derivatized so that the 3-substituent is an alkyl, aryl, or alkyl/aryl moiety with a heteroatom substitution in either the α- or beta-position of the 3-substituent.

US Patent:

7569159, Aug 4, 2009

Filed:

Feb 9, 2006

Appl. No.:

11/350271

Inventors:

Troy D. Hammond - Pittsburgh PA, US
Shawn P. Williams - Pittsburgh PA, US
Elena Sheina - Pittsburgh PA, US
Darin W. Laird - Pittsburgh PA, US
Christopher Greco - Pittsburgh PA, US
Brian Woodworth - Pittsburgh PA, US

Assignee:

Plextronics, Inc. - Evanston IL

International Classification:

H01B 1/00
H01L 35/24
C08G 75/00

US Classification:

252500, 257 40, 528377

Abstract:

Compositions for use in HIL/HTL applications include intrinsically conductive polymer, planarizing agent, and dopant, which are soluble in non-aqueous solvents. Block copolymers of regioregular alkyl/alkoxy- and aryl-substituted polythiophenes can be used. The compositions can be formed into thin films. Excellent efficiency and lifetime stability can be achieved.

US Patent:

7790979, Sep 7, 2010

Filed:

Sep 26, 2005

Appl. No.:

11/234373

Inventors:

Shawn P. Williams - Pittsburgh PA, US
Darin W. Laird - Pittsburgh PA, US
Troy D. Hammond - Pittsburgh PA, US
Andrew W. Hannah - McMurray PA, US
Elena E. Sheina - Pittsburgh PA, US
Shijun Jia - Cheswick PA, US

Assignee:

Plextronics, Inc. - Pittsburgh PA

International Classification:

H01L 31/00

US Classification:

136263

Abstract:

Regioregular polythiophene polymers can be used in photovoltaic applications including copolymers and blends. The polymer can comprise heteroatoms in the side groups. Better efficiencies can be achieved.

US Patent:

7888427, Feb 15, 2011

Filed:

Jul 31, 2006

Appl. No.:

11/496024

Inventors:

Shawn P. Williams - Pittsburgh PA, US
Darin W. Laird - Pittsburgh PA, US
Caton C. Goodman - Cheswick PA, US
Christopher M. Greco - Pittsburgh PA, US
Jaideep Rajput - Schaumburg IL, US

Assignee:

Plextronics, Inc. - Pittsburgh PA

International Classification:

C08G 75/02
C08L 81/02
C08F 28/06
C08F 34/04
C08F 128/06
C08F 134/04
C07D 333/06

US Classification:

524609, 528377, 528380, 525535, 525417, 526256, 549 29

Abstract:

Latent doping is provided wherein a conducting polymer is mixed with a dopant in solution without the doping reaction occurring unless solvent is removed. Regioregular polythiophenes are a particularly important embodiment. A composition comprising (i) at least one polymer comprising conjugation in the polymer backbone, (ii) at least one dopant for the polymer, (iii) at least one solvent for the polymer and latent dopant, wherein the polymer, the latent dopant, and the solvent are formulated so that the latent dopant does not substantially dope the polymer when formulated, but does substantially react with the polymer when the solvent is removed. Formulation of the composition can comprise adjusting the order of mixing, the amounts of the components, and the temperature. Methods of formulating the compositions and methods of using the compositions are also provided. OLED, PLED, photovoltaic, and other organic electronic devices can be fabricated.

US Patent:

8431925, Apr 30, 2013

Filed:

Sep 24, 2010

Appl. No.:

12/890493

Inventors:

Sergey B. Li - Glenshaw PA, US
Shawn P. Williams - Pittsburgh PA, US
Brian E. Woodworth - Pittsburgh PA, US
Pierre Marc Allemand - San Jose CA, US
Rimple Bhatia - Los Altos CA, US
Hash Pakbaz - Bloomingdale IL, US

Assignee:

Plextronics, Inc. - Pittsburgh PA
Cambrios Technologies Corp. - Sunnyvale CA

International Classification:

H01L 51/50

US Classification:

257 40, 257103, 257E51029, 257E33001

Abstract:

Organic electronic devices, compositions, and methods are disclosed that employ electrically conductive nanowires and conducting materials such as conjugated polymers such as sulfonated regioregular polythiophenes which provide high device performance such as good solar cell efficiency. Devices requiring transparent conductors that are resilient to physical stresses can be fabricated, with reduced corrosion problems.

US Patent:

20060078761, Apr 13, 2006

Filed:

Sep 26, 2005

Appl. No.:

11/234374

Inventors:

Shawn Williams - Pittsburgh PA, US
Darin Laird - Pittsburgh PA, US
Troy Hammond - Pittsburgh PA, US

International Classification:

H01L 51/50
H05B 33/12

US Classification:

428690000, 428917000, 313504000, 313506000, 257040000, 257E51029

Abstract:

Regioregular polythiophenes having heteroatoms in the substituents can be used in hole injection layer and hole transport layers for electroluminescent devices. Copolymers and organic oxidants can be used. Homopolymers can be used. Metallic impurities can be removed. The heteroatom can be oxygen and can be substituted at the 3-position. Advantages include versatility, synthetic control, and good thermal stability. Different device designs can be used.

US Patent:

20060237695, Oct 26, 2006

Filed:

Mar 16, 2006

Appl. No.:

11/376550

Inventors:

Shawn Williams - Pittsburgh PA, US
Darin Laird - Pittsburgh PA, US
Caton Goodman - Pittsburgh PA, US
Traian Sarbu - Pittsburgh PA, US
Shijun Jia - Pittsburgh PA, US

International Classification:

H01B 1/12

US Classification:

252500000

Abstract:

Polythiophene copolymers having tunable work functions and oxidation voltage onset. The ratio of monomer can be varied to achieve the desired property for a particular application. One monomer can be unsubstituted thiophene. The copolymer microstructure can be random. Another monomer can be a 3-substituted thiophene such as 3-alkyl or a heteroatom substituted substituent. Heterojunction polymer photovoltaic cells can be fabricated with excellent voltage onset properties compared to devices having corresponding homopolymers.

US Patent:

20090023842, Jan 22, 2009

Filed:

May 21, 2008

Appl. No.:

12/124972

Inventors:

Darin W. Laird - Pittsburgh PA, US
Shawn P. Williams - Pittsburgh PA, US
Elena E. Sheina - Pittsburgh PA, US
Jonathan S. Lindsey - Raleigh NC, US
Gregory N. Parsons - Raleigh NC, US

International Classification:

C08K 5/3417
C08G 75/00
C08L 81/00
H01L 31/00
C08K 3/04

US Classification:

524 90, 528380, 524609, 524424, 136252, 977734

Abstract:

Compositions comprising porphyrinic macrocycles and conjugated polymers such as polythiophene for use in organic electronic devices including solar cells are presented. Covalent linkage of a porphyrinic macrocycle to a polymer allows tuning of electronic and spectroscopic properties of conjugated polymers and can improve the heat stability of the system relative to a blended comparison. A composition comprising: at least one polymer comprising at least one porphyrinic macrocycle covalently linked to at least one conjugated polymer, wherein the porphyrinic macrocycle is metal-free is also presented. Inks can be formulated. Methods of making are provided.