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Author: lee richter

Displaying records 21 to 30 of 89 records.
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21. Substrate-dependent interface composition and charge transport in films for organic photovoltaics
Published: 6/9/2009
Authors: David Germack, Calvin Chan, Behrang H Hamadani, Lee J Richter, Daniel A Fischer, David J Gundlach, Dean M DeLongchamp
Abstract: The buried interface composition of polymer-fullerene blends is found by near edge X ray absorption fine structure (NEXAFS) spectroscopy to depend on the surface energy of the substrate upon which they are cast. The interface composition determines ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902284

22. Thin Films Mechanics of Degradable Tyrosine-Derived Polycarbonate Biomaterials and Their Blends
Published: 4/28/2009
Authors: Khaled A. Aamer, Christopher M Stafford, Lee J Richter, J Kohn, Matthew Becker
Abstract: The integrity, function, and performance of biomedical devices possessing thin polymeric coatings are critically dependent on the thin film mechanical properties, including the elastic modulus. In this report, the elastic moduli of several tyrosine- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854035

23. Controlling the Formation and Orientation of Terraced Nanoscale Ribbons of a Thiophene-Based Copolymer
Published: 3/24/2009
Authors: Dean M DeLongchamp, Regis J Kline, Youngsuk Jung, David Germack, Eric K Lin, Andrew Moad, Lee J Richter, Michael F. Toney, Martin Heeney, Iain McCulloch
Abstract: Terraced nanoscale ribbon domains of a poly(2,5-bis(3-alkylthiophen-2-yl) thieno[3,2-b]thiophene) form after thin films are cooled from its highest-temperature phase. A simple flow coating procedure can induce high levels of ribbon orientation and e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854094

24. In situ measurement of annealing-induced line shape decay in nanoimprinted polymers using scatterometry
Published: 3/2/2009
Authors: Heather J Patrick, Thomas Avery Germer, Yifu Ding, Hyun W. Ro, Lee J Richter, Christopher L Soles
Abstract: Thermal embossing nanoimprint lithography (NIL) is an area of continuing interest because it allows direct patterning of nanoscale structures into a wide variety of functional polymer materials. Measuring the shape evolution of nanoimprinted lines d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901568

25. Semiconducting Thienothiophene Copolymers: Design, Synthesis, Morphology and Performance in Thin Film Organic Transistors
Published: 3/1/2009
Authors: Iain McCulloch, Martin Heeney, Michael L. Chabinyc, Dean M DeLongchamp, Regis J Kline, Michael Colle, Warren Duffy, Daniel A Fischer, David J Gundlach, Behrang H Hamadani, Rick Hamilton, Lee J Richter, Alberto Salleo, Martin Shkunov, David Sparrowe, Steve Tierney, Weimin Zhang
Abstract: Organic semiconductors are emerging as a viable alternative to amorphous silicon in a range of thin film transistor devices. , With the possibility to formulate these p-type materials as inks and subsequently print into patterned devices, organic bas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854123

26. The molecular basis of mesophase ordering in a thiophene-based copolymer
Published: 2/18/2009
Authors: Dean M DeLongchamp, Regis J Kline, Youngsuk Jung, Eric K Lin, Daniel A Fischer, David J Gundlach, Andrew Moad, Lee J Richter, Michael F. Toney, Martin Heeney, Iain McCulloch
Abstract: The carrier mobility of poly(2,5-bis(3-alkylthiophen-2-yl) thieno[3,2-b]thiophene) semiconductors can be substantially enhanced after heating through a thermotropic mesophase transition, which causes a significant improvement in thin film structural ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852781

27. Scatterometry for in situ measurement of pattern reflow in nanoimprinted polymers
Published: 12/9/2008
Authors: Heather J Patrick, Thomas Avery Germer, Yifu Ding, Hyun W. Ro, Lee J Richter, Christopher L Soles
Abstract: We use optical scatterometry to extract the time evolution of the profile of nanoimprinted lines in low and high molecular mass polymer gratings during reflow at the glass transition temperature. The data are obtained continuously during the anneal ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900878

28. Contact-induced crystallinity for high-performance soluble acene-based transistors and circuits
Published: 3/8/2008
Authors: David J Gundlach, James E Royer, SK Park, Sankar Subramanian, Oana Jurchescu, Behrang H Hamadani, Andrew Moad, Regis J Kline, LC Teague, Oleg A Kirillov, Curt A Richter, Lee J Richter, Sean R Parkin, Thomas Jackson, JE Anthony
Abstract: The use of organic materials presents a tremendous opportunity to significantly impact the functionality and pervasiveness of large-area electronics. Commercialization of this technology requires reduction in manufacturing costs by exploiting inexpen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854062

29. Demonstration of Molecular Assembly on Silicon (100) for CMOS-Compatible Molecule-Based Electronic Devices
Published: 3/7/2008
Authors: Nadine Emily Gergel-Hackett, Christopher D Zangmeister, Christina Ann Hacker, Lee J Richter, Curt A Richter
Abstract: In this work, we establish the potential of a UV-promoted direct attachment of alkanes with alcohol and thiol linkers to the CMOS-compatible silicon (100) orientation for use in closed, planar, molecular electronic devices. We develop processes for m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32875

30. Contact Induced Crystallinity for High Performance Soluble Acene-Based TFTs
Published: 2/17/2008
Authors: David J Gundlach, James Royer, Behrang H Hamadani, Lucile C. Teague, Andrew J Moad, Oana Jurchescu, Oleg A Kirillov, Lee J Richter, James G. Kushmerick, Curt A Richter, Sungkyu Park, Thomas Jackson, Sankar Subramanian, John E Anthony
Abstract: Organic electronics present a tremendous opportunity to significantly impact the functionality and pervasiveness of large-area electronics. However, the lack of low-temperature low-cost deposition and patterning techniques limits the potential for th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32683



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