Results 61 to 70 of about 1,355 (182)

An all‐polymer blend for photovoltaic applications: A combined photoabsorption, photoemission and ab initio multi‐configurational study

Polymer International, EarlyView.
Near‐edge X‐ray absorption fine structure, X‐ray photoelectron spectroscopy and multi‐configuration self‐consistent field results show, respectively, preferential edge‐on and face‐on orientations for the thiophene and naphthalene diimide units of the PBDB‐T‐SF:P(NDI2OD‐T2) all‐polymer blend, and surface accumulation of the acceptor.
Cássia Ferreira Coutinho Pereira, Luís Felipe de Lima Pimentel, Alexandre B. Rocha, Maria Luiza M. Rocco   +3 more
wiley   +1 more source

An electrochemical flow cell for operando XPS and NEXAFS investigation of solid–liquid interfaces

JPhys Energy
Suitable reaction cells are critical for operando near ambient pressure (NAP) soft x-ray photoelectron spectroscopy (XPS) and near-edge x-ray absorption fine structure (NEXAFS) studies. They enable tracking the chemical state and structural properties of
Santosh Kumar, James J C Counter, David C Grinter, Matthijs A Van Spronsen, Pilar Ferrer, Alex Large, Marcin W Orzech, Pawel Jerzy Wojcik, Georg Held   +8 more
doaj   +1 more source

Structure formation in organic thin films observed in real time by energy dispersive near-edge x-ray absorption fine-structure spectroscopy

New Journal of Physics, 2013
We study the structure formation of 1,4,5,8-naphthalene-tetracarboxylicacid-dianhydride (NTCDA) multilayer films on Ag(111) surfaces by energy dispersive near-edge x-ray absorption fine-structure spectroscopy (NEXAFS) and photoelectron spectroscopy.
M Scholz, C Sauer, M Wiessner, N Nguyen, A Schöll, F Reinert   +5 more
doaj   +1 more source

Amorphization‐Induced Storage Mechanism Transition in Vanadium Oxide Cathodes for Aqueous Batteries

SusMat, EarlyView.
By synthesizing both crystalline and amorphous vanadium oxide, this study elucidates their structure‐property relationship, demonstrating that the amorphous cathode exhibits superior specific capacity, exceptional rate capability, and outstanding long‐term cycling stability.
Zhongqin Zheng, Jing Shang, Mohan Liu, Qianqian Yao, Yahui Wang, Juan Bai, Jun Mei   +6 more
wiley   +1 more source

Decoupling Electronic Activation and Pore Connectivity in Acidic Oxygen Reduction on Metal‐Free Biomass‐Derived Carbon Catalysts

ChemElectroChem, Volume 13, Issue 16, 18 August 2026.
Acidic ORR on biomass‐derived carbon is described by partially separable electronic and transport contributions. Defect‐derived electronic states are associated with the onset region, whereas connected three‐dimensional pore pathways are associated with accessibility in the transport‐influenced regime.
Ravi Singh, Daisuke Shibata, Daiki Kido, Tomohiro Ishii, Kenji Hayashida, Kaito Homma, Muhammad Asif, Santosh K. Singh, Lu Bang, Masao Kimura, Satoru Takakusagi, Kotaro Takeyasu   +11 more
wiley   +1 more source

Towards atomic resolution in sodium titanate nanotubes using near-edge X-ray-absorption fine-structure spectromicroscopy combined with multichannel multiple-scattering calculations

Beilstein Journal of Nanotechnology, 2012
Recent advances in near-edge X-ray-absorption fine-structure spectroscopy coupled with transmission X-ray microscopy (NEXAFS–TXM) allow large-area mapping investigations of individual nano-objects with spectral resolution up to E/ΔE = 104 and spatial ...
Carla Bittencourt, Peter Krüger, Maureen J. Lagos, Xiaoxing Ke, Gustaaf Van Tendeloo, Chris Ewels, Polona Umek, Peter Guttmann   +7 more
doaj   +1 more source

Sequential deposition enables suppression of spontaneous donor enrichment of the surface in spin-coated films

JPhys Materials
Sequential deposition (SD) through independent processing of donor and acceptor materials, has emerged as a promising strategy to enable better control over the active layer morphology of organic solar cells.
Leticia P Christopholi, Paweł Dąbczyński, Saurabh Pareek, Ewa Partyka-Jankowska, Marcin Zając, Stela Andrea Muntean, Ellen Moons   +6 more
doaj   +1 more source

Passivierung von Defektzuständen in organischen n‐Typ‐Ladungstransferkomplexen durch molekularen Sauerstoff

Angewandte Chemie, Volume 138, Issue 33, 10 August 2026.
O2 verbessert den Ladungstransfer in organischen n‐Typ‐Donor‐Akzeptor‐Ladungstransferkomplexen (CTCs) durch physisorptive Passivierung von Ladungsträgerfallen. Durch die Unterdrückung der Rekombination und die Förderung langlebiger delokalisierter Ladungsträger verbessert O2 den Elektronentransport und die Leitfähigkeit ohne Dotierung.
Kirill K. Gubanov, Yana Reva, Christian L. Ritterhoff, Fabio Candolfi, Daniel Langford, Maximilian Herm, Evanie Franz, Ryan W. Crisp, Frank Hampel, Michael Krieger, Andreas Späth, Benjamin Watts, Jörg Libuda, Heiko B. Weber, Bernd Meyer, Dirk M. Guldi, Rainer H. Fink   +16 more
wiley   +1 more source

NEXAFS imaging to characterize the physio-chemical composition of cuticle from African Flower Scarab Eudicella gralli

Nature Communications, 2019
Biology serves as inspiration in materials development; this requires improved understanding of the surface chemistry responsible for processes which are being mimicked.
Joe E. Baio, Cherno Jaye, Erin Sullivan, Mette H. Rasmussen, Daniel A. Fischer, Stanislav Gorb, Tobias Weidner   +6 more
doaj   +1 more source

Molecular Dioxygen‐Mediated Passivation of Electron Traps in n‐Type Organic Charge‐Transfer Complexes

Angewandte Chemie International Edition, Volume 65, Issue 33, 10 August 2026.
O2 enhances charge‐transfer in n‐type organic donor–acceptor charge‐transfer complexes (CTCs) via physisorption‐mediated trap passivation. By suppressing recombination and promoting long‐lived delocalized charge carriers, O2 improves electron transport and conductivity without doping.
Kirill K. Gubanov, Yana Reva, Christian L. Ritterhoff, Fabio Candolfi, Daniel Langford, Maximilian Herm, Evanie Franz, Ryan W. Crisp, Frank Hampel, Michael Krieger, Andreas Späth, Benjamin Watts, Jörg Libuda, Heiko B. Weber, Bernd Meyer, Dirk M. Guldi, Rainer H. Fink   +16 more
wiley   +1 more source