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1. Vertically Segregated Structure and Properties of small molecule-polymer blend semiconductors for organic thin film transistors
Nayool Shin, Dean M DeLongchamp, Jihoon Kang, Regis J Kline, Lee J Richter, Vivek M Prabhu, Balaji Purushothamanc, John E Anthony, Do Y Yoon
The phase-segregated structure and the electrical properties of thin film blends of the small-molecule semiconductor fluorinated 5,11-bis(triethylsilylethynyl) anthradithiophene with insulating binder polymers were studied for organic thin film trans ...
2. A synchrotron beamline for extreme-ultraviolet photoresist testing
Charles S. Tarrio, Steven Grantham, Shannon Bradley Hill, Nadir Sabirovich Faradzhev, Lee J Richter, Chester Knurek, Thomas B Lucatorto
Before being used in an extreme-ultraviolet (EUV) scanner, photoresists must first be evaluated for sensitivity and tested to ensure that they will not contaminate the scanner optics. The new NIST facility described here provides data on the contami ...
3. 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 ...
4. The NIST EUV facility for advanced photoresist
qualification using the witness-sample test
Steven Grantham, Charles S. Tarrio, Shannon Bradley Hill, Lee J Richter, Thomas B Lucatorto, 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 ...
5. 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
6. 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 ...
7. 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 ...
8. 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 ...
9. 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 ...
10. 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