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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.
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Journal ArticleDOI
Controlling the orientation of terraced nanoscale "ribbons" of a poly(thiophene) semiconductor.
Dean M. DeLongchamp,R. Joseph Kline,Youngsuk Jung,David S. Germack,Eric K. Lin,Andrew J. Moad,Lee J. Richter,Michael F. Toney,Martin Heeney,Iain McCulloch +9 more
TL;DR: A previously unidentified crystal shape of terraced nanoscale "ribbons" in thin films of poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene) (pBTTT) provides potential opportunities to exploit anisotropic electrical properties and to obtain detailed information about the structure of organic semiconductor thin films.
Journal ArticleDOI
Crystallography, Morphology, Electronic Structure, and Transport in Non-Fullerene/Non-Indacenodithienothiophene Polymer:Y6 Solar Cells.
Weigang Zhu,Austin P. Spencer,Subhrangsu Mukherjee,Joaquin M. Alzola,Vinod K. Sangwan,Samuel H. Amsterdam,Steven M. Swick,Leighton O. Jones,Michael C. Heiber,Andrew A. Herzing,Guoping Li,Charlotte L. Stern,Dean M. DeLongchamp,Kevin L. Kohlstedt,Mark C. Hersam,George C. Schatz,Michael R. Wasielewski,Lin X. Chen,Antonio Facchetti,Tobin J. Marks +19 more
TL;DR: Interestingly, thermal annealing does not alter film crystallinity, nor R-SoXS characteristic size scale, relative average phase purity, nor TEM-imaged phase separation, but rather facilitates Y6 migration to the BHJ film top surface, changes the PBDB-TF/Y6 vertical phase separa-tion and intermixing, and reduces bottom surface roughness.
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Morphology Development in Solution-Processed Functional Organic Blend Films: An In Situ Viewpoint
TL;DR: In this Review, insights into the fundamentals of solution-based film deposition afforded by recent state-of-the-art in situ measurements of functional film drying are highlighted and emphasis is placed on multimodal studies that combine surface-sensitive X-ray scattering with optical characterization to clearly define the evolution of solute structure with film thickness.
Journal ArticleDOI
Nanoscale structure measurements for polymer-fullerene photovoltaics
TL;DR: This review covers methods to measure key aspects of nanoscale structure in organic photovoltaic devices based on polymer-fullerene bulk heterojunctions and makes specific recommendations regarding the technical implementation of some popular techniques with an eye toward the elimination of artifacts, ambiguous data, and misinterpretation.
Journal ArticleDOI
Significant dependence of morphology and charge carrier mobility on substrate surface chemistry in high performance polythiophene semiconductor films
R. Joseph Kline,Dean M. DeLongchamp,Daniel A. Fischer,Eric K. Lin,Martin Heeney,Iain McCulloch,Michael F. Toney +6 more
TL;DR: In this article, a significant dependence of the morphology and charge carrier mobility of poly(2,5-bis(3-dodecylthiophene-2-yl)thieno[3,2-b]thionhene) (pBTTT) films on the substrate surface chemistry upon heating into its liquid crystal phase was reported.