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Dean M. DeLongchamp
Researcher at National Institute of Standards and Technology
Publications - 153
Citations - 13151
Dean M. DeLongchamp is an academic researcher from National Institute of Standards and Technology. The author has contributed to research in topics: Organic solar cell & Thin film. The author has an hindex of 55, co-authored 144 publications receiving 11314 citations. Previous affiliations of Dean M. DeLongchamp include Massachusetts Institute of Technology & Northwestern University.
Papers
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Journal ArticleDOI
Determination of the Internal Morphology of Nanostructures Patterned by Directed Self Assembly
Daniel F. Sunday,Matthew R. Hammond,Chengqing Wang,Wen-Li Wu,Dean M. DeLongchamp,Melia Tjio,Joy Cheng,Jed W. Pitera,R. Joseph Kline +8 more
TL;DR: A new measurement technique, resonant critical-dimension small-angle X-ray scattering (res-CDSAXS), is developed, to evaluate the 3D buried features inside the film and enable a better understanding of the fundamental physics behind the formation of buried features in DSA BCP films.
Journal ArticleDOI
High performance airbrushed organic thin film transistors
Calvin K. Chan,Lee J. Richter,Brad Dinardo,Cherno Jaye,Brad Conrad,Hyun Wook Ro,David S. Germack,Daniel A. Fischer,Dean M. DeLongchamp,David J. Gundlach +9 more
TL;DR: In this paper, spray-deposited poly-3-hexylthiophene (P3HT) transistors were characterized using electrical and structural methods, and they exhibited a saturation regime mobility as high as 0.1 cm2/V−1/s−1, which is comparable to the best mobilities observed in high molecular mass P3HT transistors prepared using other methods.
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Readily Accessible Benzo[d]thiazole Polymers for Nonfullerene Solar Cells with >16% Efficiency and Potential Pitfalls
Liang-Wen Feng,Jianhua Chen,Subhrangsu Mukherjee,Vinod K. Sangwan,Wei Huang,Yao Chen,Ding Zheng,Joseph Strzalka,Gang Wang,Mark C. Hersam,Dean M. DeLongchamp,Antonio Facchetti,Tobin J. Marks +12 more
TL;DR: In this paper, the authors report facile, high-yield synthetic access to the difluoro BTA building block, 4,7-bis(5-bromo-4-(2-hexyl-decyl)-thiophen-2-yl)-5,6-difluor-2-(pentadecan-7-yl)benzo[d]thiazole (BTAT-2f), which they call BTAT 2f.
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Measuring Domain Sizes and Compositional Heterogeneities in P3HT‐PCBM Bulk Heterojunction Thin Films with 1H Spin Diffusion NMR Spectroscopy
Ryan C. Nieuwendaal,Hyun Wook Ro,David S. Germack,R. Joseph Kline,Michael F. Toney,Calvin K. Chan,Amit Agrawal,David J. Gundlach,David L. VanderHart,Dean M. DeLongchamp +9 more
TL;DR: In this paper, the application of 1H spin diffusion nuclear magnetic resonance (NMR) is expanded to polymer-fullerene blends for bulk heterojunction (BHJ) organic photovoltaics (OPV) by developing a new experimental methodology for measuring the thin films used in poly-3-hexylthiophene-phenyl C61-butyric acid methyl ester (P3HT-PCBM) OPV devices and by creating an analysis framework for estimating domain size distributions.
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Donor–Acceptor Shape Matching Drives Performance in Photovoltaics
Theanne Schiros,Gregor Kladnik,Deborah Prezzi,Andrea Ferretti,Giorgia Olivieri,Albano Cossaro,Luca Floreano,Alberto Verdini,Christine L. Schenck,Marshall Cox,Alon A. Gorodetsky,Kyle N. Plunkett,Dean M. DeLongchamp,Colin Nuckolls,Alberto Morgante,Dean Cvetko,Ioannis Kymissis +16 more
TL;DR: In this article, the authors compared the electronic coupling, assembly, and charge transfer rates at the interface between C 60 acceptors and contorted-hexabenzocorone (HBC) donors.