Los Alamos National Laboratory
Nanotechnology and Advanced Spectroscopy Team

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Istvan Robel

Istvan Robel

R&D Scientist
Los Alamos National Laboratory
MS J567, C-PCS
Los Alamos, NM 87545
Phone: 505-665-1462
Email: robel@lanl.gov

Google Scholar Profile


Professional Career

  • 2010-Present, Staff Member, Los Alamos National Laboratory
  • 2007-2010, Postdoctoral Research Associate, Los Alamos National Laboratory
  • 2006-2007, Postdoctoral Research Associate, Argonne National Laboratory

Education

  • 2006: Ph.D. in Physics, University of Notre Dame
  • 2000: B.S. in Physics, Babes-Bolyai University, Romania

Current Research:

My current research focuses on the study of the electronic properties of semiconductor nanocrystals from the perspective of solar energy conversion.

Awards

  • Los Alamos Achievement Award, 2008, 2013, 2014
  • ISI Fast Breaking Paper in Chemistry, 2007
  • Kaneb Teaching Award, Notre Dame, 2004
  • Merit Scholarship of the Romanian Ministry of Education, Babes-Bolyai University, 1997-2000

Selected Publications

  • N. S. Makarov, S. Guo, O. Isaienko, W. Liu, I. Robel, V. I. Klimov, Spectral and Dynamical Properties of Single Excitons, Biexcitons, and Trions in Cesium–Lead-Halide Perovskite Quantum Dots, Nano Lett. 16, 2349-2362 (2016)
  • O. Isaienko and I. Robel, Phonon-assisted nonlinear optical processes in ultrashort-pulse pumped optical parametric amplifiers, Sci. Rep. 6, 23031 (2016)
  • I. Robel, A. Shabaev, D. C. Lee, R. D. Schaller, J. M. Pietryga, S. A. Crooker, Al. L. Efros, V. I. Klimov, Temperature and Magnetic-Field Dependence of Radiative Decay in Colloidal Germanium Quantum Dots, Nano Lett. 15, 2685-2692 (2015)
  • C. M. Cirloganu, L. A. Padilha, Q. Lin, N. S. Makarov, K. A. Velizhanin, H. Luo, I. Robel, J. M. Pietryga, V. I. Klimov, Enhanced carrier multiplication in engineered quasi-type-II quantum dots, Nature Communications 5, 4148 (2014)
  • W. K. Bae, Y.-S. Park, J. Lim, D. Lee, L. A. Padilha, H. McDaniel, I. Robel, C. Lee, J. M. Pietryga, V. I. Klimov, Controlling the influence of Auger recombination on the performance of quantum-dot light-emitting diodes,Nature Communications 4, 2661 (2013)
  • W.-k. Koh, A. Y. Koposov, J. T. Stewart, B. N. Pal, I. Robel, J. M. Pietryga, V. I. Klimov, Heavily doped n-type PbSe and PbS nanocrystals using ground-state charge transfer from cobaltocene, Scientific Reports, 3, 2004 (2013)
  • B. N. Pal, I. Robel, A. Mohite, R. Laocharoensuk D. Werder, and V. I. Klimov, “High-Sensitivity p-n Junction Photodiodes Based on PbS Nanocrystal Quantum Dots” Adv. Funct. Mater., 22, 8, 1741–1748 (2012)
  • L. A. Padilha, I. Robel, D.C. Lee, P. Nagpal, J. M. Pietryga, and V. I. Klimov, Spectral Dependence of Nanocrystal Photoionization Probability: The Role of Hot-Carrier Transfer, ACS Nano (2011)
  • D.C. Lee, I. Robel, J.M. Pietryga, V.I. Klimov, Infrared-Active Heterostructured Nanocrystals with Ultralong Carrier Lifetimes. J. Am. Chem. Soc.132, 9960 (2010).
  • J. A. McGuire, M. Sykora, I. Robel, L. A. Padilha, J. Joo, J. M. Pietryga, V. I. Klimov, Spectroscopic signatures of photocharging due to hot-carrier transfer in solutions of semiconductor nanocrystlas under low-intensity ultraviolet excitation, ACS Nano 4, 6087 (2010).
  • I. Robel, R. Gresback, U. Kortshagen, R. D. Schaller, V. I. Klimov, Universal size-dependent trend in Auger recombination in direct-gap and indirect-gap semiconductor nanocrystals, Phys. Rev. Lett. 102, 177404 (2009)
  • I. Robel, M. Kuno, and P. V. Kamat, Size-dependent electron injection from excited CdSe quantum dots into TiO2 nanoparticles, J. Am. Chem. Soc. 129, 4136 (2007)
  • I. Robel, V. Subramanian, M. Kuno, P. V. Kamat, Quantum dot solar cells. Harvesting light energy with CdSe nanocrystals molecularly linked to mesoscopic TiO2 films,  J. Am. Chem. Soc. 128, 2385 (2006)
  • I. Robel, B. A. Bunker, P. V. Kamat, M. Kuno, Exciton recombination dynamics in CdSe nanowires: Bimolecular to three-carrier Auger kinetics, Nano Lett. 6, 1344 (2006)
  • I. Robel, B. A. Bunker, P. V. Kamat, Single-walled carbon nanotube-CdS nanocomposites as light-harvesting assemblies: Photoinduced charge-transfer interactions, Adv. Mater. 17, 2458 (2005)

May 2016

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