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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
Charge Transport in Highly Face-On Poly(3-hexylthiophene) Films
Deepak Gargi,R. Joseph Kline,Dean M. DeLongchamp,Daniel A. Fischer,Michael F. Toney,Brendan O'Connor +5 more
TL;DR: In this paper, the π-stacking direction in poly(3-hexylthiophene) (P3HT) films can be made to orient strongly out-of plane by uniaxially straining films in orthogonal directions, providing a valuable opportunity to evaluate charge transport in a very unusual microstructure for this material.
Journal ArticleDOI
Quantifying Crystallinity in High Molar Mass Poly(3-hexylthiophene)
Chad R. Snyder,Ryan C. Nieuwendaal,Dean M. DeLongchamp,Christine K. Luscombe,Prakash Sista,Shane D. Boyd +5 more
TL;DR: In this article, a method to determine absolute crystallinity in high molar mass poly(3-hexylthiophene) (P3HT), as used in commercially relevant organic photovoltaic devices, using enthalpy of fusion and melting temperature values derived from differential scanning calorimetry (DSC) and 13C CPMAS NMR.
Journal Article
Vertically Segregated Structure and Properties of small molecule-polymer blend semiconductors for organic thin film transistors | NIST
Journal ArticleDOI
Effect of Solution Shearing Method on Packing and Disorder of Organic Semiconductor Polymers
Gaurav Giri,Dean M. DeLongchamp,Julia Reinspach,Julia Reinspach,Daniel A. Fischer,Lee J. Richter,Jie Xu,Stephanie J. Benight,Alexander L. Ayzner,Mingqian He,Lei Fang,Gi Xue,Michael F. Toney,Zhenan Bao +13 more
TL;DR: In this paper, the authors studied how the solution shearing method impacts the thin film morphology and causes structural rearrangements of two polymeric OSCs with interdigitated side chain packing, namely P2TDC17FT4 and PBTTT-C16.
Journal ArticleDOI
Systematic Merging of Nonfullerene Acceptor π-Extension and Tetrafluorination Strategies Affords Polymer Solar Cells with >16% Efficiency.
Guoping Li,Xiaohua Zhang,Xiaohua Zhang,Leighton O. Jones,Joaquin M. Alzola,Subhrangsu Mukherjee,Liang Wen Feng,Weigang Zhu,Weigang Zhu,Charlotte L. Stern,Wei Huang,Junsheng Yu,Vinod K. Sangwan,Dean M. DeLongchamp,Kevin L. Kohlstedt,Michael R. Wasielewski,Mark C. Hersam,George C. Schatz,Antonio Facchetti,Tobin J. Marks +19 more
TL;DR: In this paper, the impact of π-extension and halogenation on the optical absorption of nonfullerene acceptors (NFAs) in BHJ organic solar cells (OSCs) was investigated.