You searched on: Author: lee richter
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11. Molecular Order in High-Efficiency Polymer/Fullerene Bulk Heterojunction Solar Cells
Matthew R. Hammond, Regis J Kline, Andrew A Herzing, Lee J Richter, David Germack, Hyun Wook Ro, Christopher L Soles, Daniel A Fischer, Tao Xu, Luping Yu, Michael F. Toney, Dean M DeLongchamp
We report quantitative measurements of ordering, molecular orientation, and nanoscale morphology in the active layer of bulk heterojunction organic photovoltaic cells based on a thieno[3,4-b]thiophene-alt-benzodithiophene copolymer (PTB7), which has ...
12. The NIST EUV facility for advanced photoresist
qualification using the witness-sample test
Steven E Grantham, Charles S Tarrio, Shannon Bradley Hill, Lee J Richter, J. van Dijk, C. Kaya, N. Harned, R. Hoefnagels, M. Silova, J. Steinhoff
Before being used in an extreme-ultraviolet (EUV) scanner, photoresists must first be qualified to ensure that they will not excessively contaminate the scanner optics or other parts of the vacuum environment of the scanner. At the National Institute ...
13. Flexible Memristors Fabricated through Sol-Gel Hydrolysis
Joseph Leo Tedesco, Nadine Gergel-Hackett, Laurie Stephey, Madelaine Herminia Hernandez, Andrew A Herzing, Lee J Richter, Christina Ann Hacker, Joseph J Kopanski, Jan Obrzut, Curt A Richter
14. Optics contamination studies in support of high-throughput EUV lithography tools
Shannon Bradley Hill, Fardina Asikin, Lee J Richter, Steven E Grantham, Charles S Tarrio, Thomas B Lucatorto, Sergiy Yulin, Mark Schurmann, Viatcheslav Nesterenko, Torsten Feigl
We report on optics contamination rates induced by exposure to broad-bandwidth, high-intensity EUV radiation peaked near 8 nm in a new beamline at the NIST synchrotron. The peak intensity of 50 mW/mm2 allows extension of previous investigations of c ...
15. Conduction and Loss Mechanisms in Flexible Oxide-Based Memristors
Joseph Leo Tedesco, Nadine Gergel-Hackett, Laurie Stephey, Andrew A Herzing, Madelaine Herminia Hernandez, Christina Ann Hacker, Jan Obrzut, Lee J Richter, Curt A Richter
In order to study the conduction
and loss mechanisms behind their operation, flexible sol-gel based memristors were fabricated with differing oxide film thicknesses and device sizes. XPS, TEM, EELS, and VASE measurements indicated the oxide was amor ...
16. Controlling the Microstructure of Solution-Processible Small Molecules in Thin-Film Transistors through Substrate Chemistry
Regis J Kline, Steven D Hudson, Xinran Zhang, David J Gundlach, Andrew Moad, Lee J Richter, Oana Jurchescu, Thomas Jackson, Sanker Subramanian, John E Anthony, Michael F. Toney
Solution-processible small molecules have tremendous potential for providing both high charge carrier mobility and low cost processing. This study outlines a detailed microstructural study of the effect of substrate chemistry on fluorinated 5,11-bis ...
17. 3D Nanoscale Characterization of Thin-Film Organic Photovoltaic Device Structures via Spectroscopic Contrast in the TEM
Andrew A Herzing, Lee J Richter, Ian M. Anderson
The three-dimensional characterization of third generation photovoltaic device structures at the nanometer scale is essential to the development of efficient, reliable, and inexpensive solar cell technologies. Electron tomography is a powerful metho ...
18. Origin of Nanoscale Variations in Photoresponse of an Organic Solar Cell
Behrang H Hamadani, Suyong S. Jung, Paul M Haney, Lee J Richter, Nikolai B Zhitenev
Photo generated charge transport in bulk heterojunction (BHJ) solar cells is strongly dependent on the active layer nanomorphology resulting from phase segregation and connectivity of the donor and acceptor regions. Scanning probe-based techniques an ...
19. High performance airbrushed organic thin film transistors
Calvin Chan, Lee J Richter, Brad Anthony Dinardo, Cherno Jaye, Brad Conrad, Hyun Wook Ro, David Germack, Daniel A Fischer, Dean M DeLongchamp, David J Gundlach
20. Electrical and structural characterization of high performance airbrushed organic thin film transistors
Calvin Chan, Lee J Richter, Cherno Jaye, Brad Conrad, Hyun Wook Ro, David Germack, Daniel A Fischer, Dean M DeLongchamp, David J Gundlach