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Eitan Ehrenfreund
Researcher at Technion – Israel Institute of Technology
Publications - 216
Citations - 5755
Eitan Ehrenfreund is an academic researcher from Technion – Israel Institute of Technology. The author has contributed to research in topics: Raman scattering & Absorption spectroscopy. The author has an hindex of 37, co-authored 215 publications receiving 5391 citations. Previous affiliations of Eitan Ehrenfreund include University of Utah & University of Pennsylvania.
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Journal ArticleDOI
Isotope effect in spin response of pi-conjugated polymer films and devices.
Tho Duc Nguyen,Golda Hukic-Markosian,Fujian Wang,Leonard Wojcik,Xiaoguang Li,Eitan Ehrenfreund,Z. Valy Vardeny +6 more
TL;DR: It is demonstrated that the HFI does indeed have a crucial role in all three spin responses and OLED films based on the D-polymers show substantially narrower magneto-electroluminescence and ODMR responses, and OSV devices based on D- polymers show a substantially larger magnetoresistance.
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Giant Rashba splitting in 2D organic-inorganic halide perovskites measured by transient spectroscopies
Yaxin Zhai,Sangita Baniya,Chuang Zhang,Junwen Li,Junwen Li,Paul M. Haney,Chuanxiang Sheng,Chuanxiang Sheng,Eitan Ehrenfreund,Eitan Ehrenfreund,Zeev Valy Vardeny +10 more
TL;DR: A giant Rashba splitting in this compound, with energy splitting of (40 ± 5) meV and Rashba parameter of (1.6 ± 0.1) eV·Å, is obtained, which shows that 2D hybrid perovskites have great promise for potential applications in spintronics.
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Multiexciton Spectroscopy of a Single Self-Assembled Quantum Dot
TL;DR: In this paper, the authors apply low temperature confocal optical microscopy to spatially resolve, and spectroscopically study, a single self-assembled quantum dot and compare the emission spectra obtained at various excitation levels to a theoretical many body model, showing that radiative recombination is very weak and sharp spectral lines are due to optical transitions between confined multiexcitonic states among which excitons thermalize within their lifetimes.
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Amplitude and phase modes in trans -polyacetylene: Resonant Raman scattering and induced infrared activity
TL;DR: The resonant Raman scattering (RRS) from the three modes of trans-polyacetylene and the charged-induced ir modes are analyzed with use of the amplitude- and phase-mode theories and it is shown that the observed phonon frequencies and the relative intensities of all modes obtained at various laser excitation energies are accounted for by a single phonon propagator.
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Spin-Polarized Light-Emitting Diode Based on an Organic Bipolar Spin Valve
TL;DR: A spin-OLED with ferromagnetic electrodes that acts as a bipolar organic spin valve (OSV) based on a deuterated derivative of poly(phenylene-vinylene) with small hyperfine interaction is designed, fabricated, and studied, which provides a pathway for organic displays controlled by external magnetic fields.