Personal Info

Name Eitan Ehrenfreund
Phone number 04-8293610
Fax number 04-8235107
Research & teaching experience
Current research interests
Electro-optics and photoexcitations of conjugated polymers 
Photo-excitations in semiconducting quantum wells and dots
The group of Professor Eitan Ehrenfreund is studying magnetic field effects in organic materials and organic opto-eletronic devices, and the dynamics of photoexcitations in -conjugated organics and in heavy-element-containing -conjugated organics.
Research grants & Contracts
Complete CV
Selected Publications

239. T.D. Nguyen, B. R. Gautam, E. Ehrenfreund, Z.V. Vardeny, Magneto-conductance of unipolar and bipolar diodes based on ?-conjugated polymer, Synthetic Metals doi:10.1016/j.synthmet.2010.11.05.
238. T.D. Nguyen, G. Hukic-Markosian, F. Wang, X.-G. Li, E. Ehrenfreund, Z.V. Vardeny, The Hyperfine Interaction Role in the Spin Response of ?-Conjugated Polymer Films and Spin Valve Devices, Synthetic Metals , DOI: 10.1016/j.synthmet.2010.12.013
237. Tho D. Nguyen, Golda Hukic-Markosian, Fujian Wang, Leonard Wojcik, Xiao-Guang Li, Eitan Ehrenfreund, Z. Valy Vardeny, Hyperfine Interaction in Spin Response of Organic Devices, Proc. of SPIE (0277-786X), 7760, A1-A12 (2010).
236. T. D. Nguyen, B. Gautam, E. Ehrenfreund, Z. V. Vardeny, Magnetoconductance Response in Unipolar and Bipolar Organic Diodes at Ultrasmall Fields, Phys. Rev. Letters 105, 166804 (2010).
235. E. Ehrenfreund and Z.V. Vardeny, "Magnetic Field Effects in Organics", in "Organic Spintronics", Ed. Z.V. Vardeny, Taylor and Francis, New York, Ch. 5, pp. 217-255, (2010) (Invited Review).
234. Tho D. Nguyen, Golda Hukic-Markosian, Fujian Wang, Leonard Wojcik, Xiao-Guang Li, Eitan Ehrenfreund, Z. Valy Vardeny, Isotope effect in spin response of ?-conjugated polymer films and devices, Nature Materials, 9, 345-352 (2010);DOI: 10.1038/NMAT2633. For the Supplement Information (8 pages) see:
233. F. Wang, C.G. Yang, E. Ehrenfreund, Z.V. Vardeny, Spin Dependent Reactions of Polaron Pairs in PPV based Organic Diodes, Synthetic Metals 160, 297{302 (2010). DOI: 10.1016/j.synthmet.2009.06.014
232. N. Akopian, A. Vardi, G. Bahir, V. Garber, E. Ehrenfreund, D. Gershoni, C. Poblenz, C.R. Elsass, I.P. Smorchkova, J.S. Speck, Fermi edge singularity observed in GaN/AlGaN heterointerfaces, Appl. Phys. Letters 94, 223502 (2009).
231. E. Olejnik, C. Herzog-Ronen, Y. Eichen, E. Ehrenfreund, Recombination kinetics of polarons in films of alkylator-sensing co-polymers, Synthetic Metals 159, 1024-1027 (2009).
230. C. Lungenschmied, E. Ehrenfreund, N.S. Sariciftci, Negative capacitance and its photo-inhibition in organic bulk heterojunction devices, Organic Electronics 10, 115-118 (2009).


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