Victor I Klimov

Summary

Affiliation: Los Alamos National Laboratory
Country: USA

Publications

  1. ncbi request reprint Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals
    Victor I Klimov
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    Annu Rev Phys Chem 58:635-73. 2007
  2. ncbi request reprint An amphiphilic approach to nanocrystal quantum dot-titania nanocomposites
    Melissa A Petruska
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    J Am Chem Soc 126:714-5. 2004
  3. doi request reprint 'Giant' CdSe/CdS core/shell nanocrystal quantum dots as efficient electroluminescent materials: strong influence of shell thickness on light-emitting diode performance
    Bhola N Pal
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 12:331-6. 2012
  4. doi request reprint Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine
    Wan Ki Bae
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    J Am Chem Soc 134:20160-8. 2012
  5. doi request reprint Spectroscopic signatures of photocharging due to hot-carrier transfer in solutions of semiconductor nanocrystals under low-intensity ultraviolet excitation
    John A McGuire
    Center for Advanced Solar Photophysics, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    ACS Nano 4:6087-97. 2010
  6. doi request reprint Spectral dependence of nanocrystal photoionization probability: the role of hot-carrier transfer
    Lazaro A Padilha
    Center for Advanced Solar Photophysics, C PCS, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    ACS Nano 5:5045-55. 2011
  7. doi request reprint Multiexciton dynamics in infrared-emitting colloidal nanostructures probed by a superconducting nanowire single-photon detector
    Richard L Sandberg
    Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    ACS Nano 6:9532-40. 2012
  8. doi request reprint Copper-doped inverted core/shell nanocrystals with "permanent" optically active holes
    Ranjani Viswanatha
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    Nano Lett 11:4753-8. 2011
  9. pmc Lifetime blinking in nonblinking nanocrystal quantum dots
    Christophe Galland
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nat Commun 3:908. 2012
  10. doi request reprint Breakdown of volume scaling in Auger recombination in CdSe/CdS heteronanocrystals: the role of the core-shell interface
    Florencio García-Santamaría
    Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 11:687-93. 2011

Collaborators

  • Richard D Schaller
  • Liang Li
  • Melissa A Petruska
  • Matthew C Beard
  • Joseph M Luther
  • Andrei Piryatinski
  • Baoquan Sun
  • Sergei Tretiak
  • Sergei A Ivanov
  • Jeffrey M Pietryga
  • Lazaro A Padilha
  • Wan Ki Bae
  • Christophe Galland
  • Sergio Brovelli
  • Ranjani Viswanatha
  • Istvan Robel
  • Milan Sykora
  • Han Htoon
  • Jennifer A Hollingsworth
  • Doh C Lee
  • Jin Joo
  • John A McGuire
  • John T Stewart
  • Richard L Sandberg
  • Yagnaseni Ghosh
  • Prashant Nagpal
  • Scott A Crooker
  • Marc Achermann
  • Weon Kyu Koh
  • Bishnu P Khanal
  • Qianglu Lin
  • Virginia W Manner
  • Hongmei Luo
  • Bhola N Pal
  • Anshu Pandey
  • Andrea Steinbrück
  • Florencio García-Santamaría
  • Alexey Y Koposov
  • Donald J Werder
  • Daniel D Koleske
  • Alexander H Mueller
  • Wan K Bae
  • Francesco Meinardi
  • Young Shin Park
  • Hunter McDaniel
  • Rawiwan Laocharoensuk
  • Jonghan Won
  • M Mumtaz Qazilbash
  • Burm Baek
  • Arthur J Nozik
  • Sae Woo Nam
  • Aaron G Midgett
  • Martin J Stevens
  • Muhammad M Qazilbash
  • Paul Szymanski
  • Roland K Schulze
  • Olexandr Tretiak
  • Uwe Kortshagen
  • Darrick J Williams
  • Ryan Gresback
  • Sea Ho Jeon
  • Hsing Lin Wang
  • Mary H Crawford
  • Elshan A Akhadov
  • Mark A Hoffbauer

Detail Information

Publications31

  1. ncbi request reprint Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals
    Victor I Klimov
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
    Annu Rev Phys Chem 58:635-73. 2007
    ..This chapter also briefly reviews the implications of multiexciton effects for practical technologies, such as NC lasing and photovoltaics...
  2. ncbi request reprint An amphiphilic approach to nanocrystal quantum dot-titania nanocomposites
    Melissa A Petruska
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    J Am Chem Soc 126:714-5. 2004
    ..This procedure is applicable to hydrophobically capped NQDs of a variety of shapes and compositions, making it a truly generalized route to nanocrystal-titania nanocomposites...
  3. doi request reprint 'Giant' CdSe/CdS core/shell nanocrystal quantum dots as efficient electroluminescent materials: strong influence of shell thickness on light-emitting diode performance
    Bhola N Pal
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 12:331-6. 2012
    ..The thickest-shell nanocrystals (16 monolayers of CdS) afforded an external quantum efficiency and luminance of 0.17% and 2000 Cd/m(2), respectively, with a remarkably low turn-on voltage of ~3.0 V...
  4. doi request reprint Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine
    Wan Ki Bae
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    J Am Chem Soc 134:20160-8. 2012
    ....
  5. doi request reprint Spectroscopic signatures of photocharging due to hot-carrier transfer in solutions of semiconductor nanocrystals under low-intensity ultraviolet excitation
    John A McGuire
    Center for Advanced Solar Photophysics, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    ACS Nano 4:6087-97. 2010
    ..The results of these studies have important implications for the understanding of photophysical properties of NCs, especially in the case of time-resolved measurements of carrier multiplication...
  6. doi request reprint Spectral dependence of nanocrystal photoionization probability: the role of hot-carrier transfer
    Lazaro A Padilha
    Center for Advanced Solar Photophysics, C PCS, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    ACS Nano 5:5045-55. 2011
    ..The charge-separated states produced by photoionization are characterized by extremely long lifetimes (20 to 85 s) that become longer with increasing NQD size...
  7. doi request reprint Multiexciton dynamics in infrared-emitting colloidal nanostructures probed by a superconducting nanowire single-photon detector
    Richard L Sandberg
    Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    ACS Nano 6:9532-40. 2012
    ..These findings suggest that shape control is a promising approach for enhancing the CM process. Further, our work demonstrates the effectiveness of the SNSPD technique for the rapid screening of CM performance in infrared nanomaterials...
  8. doi request reprint Copper-doped inverted core/shell nanocrystals with "permanent" optically active holes
    Ranjani Viswanatha
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    Nano Lett 11:4753-8. 2011
    ..7 eV). These properties make them very attractive for applications in light-emission and lasing technologies and especially for the realization of novel device concepts such as "zero-threshold" optical gain...
  9. pmc Lifetime blinking in nonblinking nanocrystal quantum dots
    Christophe Galland
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nat Commun 3:908. 2012
    ..The Auger process involving excitation of a hole (positive trion pathway) remains efficient and is responsible for charging with excess electrons, which occurs via Auger-assisted ionization of biexcitons accompanied by ejection of holes...
  10. doi request reprint Breakdown of volume scaling in Auger recombination in CdSe/CdS heteronanocrystals: the role of the core-shell interface
    Florencio García-Santamaría
    Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 11:687-93. 2011
    ..These data highlight the importance of NC interfacial structure in the AR process and provide general guidelines for the development of new nanostructures with suppressed AR for future lasing applications...
  11. ncbi request reprint Nanocrystal-based light-emitting diodes utilizing high-efficiency nonradiative energy transfer for color conversion
    Marc Achermann
    Los Alamos National Laboratory, New Mexico 87545, USA
    Nano Lett 6:1396-400. 2006
    ..Furthermore, these hybrid devices can also provide improved efficiencies, compared not only to phosphor-based structures but also to stand-alone LEDs...
  12. doi request reprint Aspect ratio dependence of auger recombination and carrier multiplication in PbSe nanorods
    Lazaro A Padilha
    Center for Advanced Solar Photophysics, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    Nano Lett 13:1092-9. 2013
    ....
  13. doi request reprint Role of solvent-oxygen ion pairs in photooxidation of CdSe nanocrystal quantum dots
    Virginia W Manner
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    ACS Nano 6:2371-7. 2012
    ....
  14. doi request reprint Comparison of carrier multiplication yields in PbS and PbSe nanocrystals: the role of competing energy-loss processes
    John T Stewart
    Center for Advanced Solar Photophysics, C PCS, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 12:622-8. 2012
    ..Indeed, our estimations for phonon emission mediated by the polar Fröhlich-type interaction indicate that the corresponding energy-loss rate is approximately twice as large in PbS than in PbSe...
  15. doi request reprint Hybrid photovoltaics based on semiconductor nanocrystals and amorphous silicon
    Baoquan Sun
    Chemistry Division, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 9:1235-41. 2009
    ..9%. This work demonstrates the feasibility of hybrid PV devices that combine advantages of mature silicon fabrication technologies with the unique electronic properties of semiconductor NCs...
  16. ncbi request reprint Carrier multiplication in InAs nanocrystal quantum dots with an onset defined by the energy conservation limit
    Richard D Schaller
    Chemistry Division, C PCS, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 7:3469-76. 2007
    ..We report experimental studies of exciton dynamics (Auger recombination, intraband relaxation, radiative recombination, multiexciton generation, and biexciton shift) in InAs NQDs and show that they exhibit a CM threshold near 2Eg...
  17. doi request reprint Controlled Alloying of the Core-Shell Interface in CdSe/CdS Quantum Dots for Suppression of Auger Recombination
    Wan Ki Bae
    Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    ACS Nano 7:3411-9. 2013
    ..The proposed strategy should be applicable to QDs of a variety of compositions (including, e.g., infrared-emitting QDs) and can benefit numerous applications from light emitting diodes and lasers to photodetectors and photovoltaics...
  18. ncbi request reprint Colloidal synthesis of infrared-emitting germanium nanocrystals
    Doh C Lee
    Chemistry Division, C PCS, MS J567, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    J Am Chem Soc 131:3436-7. 2009
    ..Size analysis of the samples by transmission electron microscopy revealed that the size dependence of the emission is consistent with the effects of quantum confinement...
  19. doi request reprint Dynamic hole blockade yields two-color quantum and classical light from dot-in-bulk nanocrystals
    Christophe Galland
    Chemistry Division and Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 13:321-8. 2013
    ....
  20. ncbi request reprint Generalized synthesis of hybrid metal-semiconductor nanostructures tunable from the visible to the infrared
    Bishnu P Khanal
    Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    ACS Nano 6:3832-40. 2012
    ....
  21. pmc Two types of luminescence blinking revealed by spectroelectrochemistry of single quantum dots
    Christophe Galland
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nature 479:203-7. 2011
    ..When unoccupied, these sites intercept 'hot' electrons before they relax into emitting core states. Both blinking mechanisms can be electrochemically controlled and completely suppressed by application of an appropriate potential...
  22. doi request reprint Response of semiconductor nanocrystals to extremely energetic excitation
    Lazaro A Padilha
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    Nano Lett 13:925-32. 2013
    ....
  23. doi request reprint Tuning radiative recombination in Cu-doped nanocrystals via electrochemical control of surface trapping
    Sergio Brovelli
    Center for Advanced Solar Photophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 12:4372-9. 2012
    ....
  24. ncbi request reprint Spin-polarized mn^{2+} emission from mn-doped colloidal nanocrystals
    Ranjani Viswanatha
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Phys Rev Lett 107:067402. 2011
    ..These data highlight the influence of strong quantum confinement on both the excitation and the emission mechanisms of magnetic ions in DMS nanomaterials...
  25. ncbi request reprint Effect of air exposure on surface properties, electronic structure, and carrier relaxation in PbSe nanocrystals
    Milan Sykora
    Center for Advanced Solar Photophysics, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    ACS Nano 4:2021-34. 2010
    ..We also show that the effects of air exposure are partially suppressed in PbSe/CdSe core/shell structures...
  26. ncbi request reprint Efficient synthesis of highly luminescent copper indium sulfide-based core/shell nanocrystals with surprisingly long-lived emission
    Liang Li
    Center for Advanced Solar Photophysics, C PCS, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
    J Am Chem Soc 133:1176-9. 2011
    ....
  27. ncbi request reprint Effect of quantum and dielectric confinement on the exciton-exciton interaction energy in type II core/shell semiconductor nanocrystals
    Andrei Piryatinski
    Center for Nonlinear Studies CNLS, Theoretical Division, and Center for Integrated Nanotechnologies CINT, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 7:108-15. 2007
    ..Potential applications of strongly interacting biexciton states include such areas as lasing, nonlinear optics, and quantum information...
  28. ncbi request reprint Multicolor light-emitting diodes based on semiconductor nanocrystals encapsulated in GaN charge injection layers
    Alexander H Mueller
    Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nano Lett 5:1039-44. 2005
    ..We demonstrate electroluminescence (injection efficiencies of at least 1%) in both single- and two-color regimes using structures comprising either a single monolayer or a bilayer of nanocrystals...
  29. ncbi request reprint Universal size-dependent trend in auger recombination in direct-gap and indirect-gap semiconductor nanocrystals
    Istvan Robel
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Phys Rev Lett 102:177404. 2009
    ....
  30. ncbi request reprint A reduction pathway in the synthesis of PbSe nanocrystal quantum dots
    Jin Joo
    Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    J Am Chem Soc 131:10620-8. 2009
    ..Finally, we use numerical simulations to support the conjecture that the increased yield is likely a result of faster monomer formation, consistent with the activation of an additional reaction pathway by the reducing species...
  31. pmc Role of mid-gap states in charge transport and photoconductivity in semiconductor nanocrystal films
    Prashant Nagpal
    Center for Advanced Solar Photophysics, C PCS, Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    Nat Commun 2:486. 2011
    ..In this case, the mid-gap band still has an important role as its occupancy (tuned by the gate voltage) controls the dynamics of band-edge charges...