Positions

Selected Publications

Academic Article

Year Title Altmetric
2017 Ultrafast optical snapshots of hybrid perovskites reveal the origin of multiband electronic transitionsPhysical Review B.  96. 2017
2017 Unravelling Photocarrier Dynamics beyond the Space Charge Region for Photoelectrochemical Water SplittingChemistry of Materials.  29:4036-4043. 2017
2017 Extremely efficient internal exciton dissociation through edge states in layered 2D perovskitesScience.  355:1288-1292. 2017
2016 Exciton Correlations in Intramolecular Singlet FissionJournal of the American Chemical Society.  138:7289-7297. 2016
2016 Polaron stabilization by cooperative lattice distortion and cation rotations in hybrid perovskite materialsNano Letters.  16:3809-3816. 2016
2016 Light-activated photocurrent degradation and self-healing in perovskite solar cellsNature Communications.  7. 2016
2016 Excitonic Lasing in Solution-Processed Subwavelength Nanosphere AssembliesNano Letters.  16:2004-2010. 2016
2016 Heterogeneous nucleation and growth dynamics in the light-induced phase transition in vanadium dioxideJournal of Physics: Condensed Matter.  28. 2016
2015 Optically-Triggered Nanoscale Memory Effect in a Hybrid Plasmonic-Phase Changing NanostructureACS Photonics.  2:1306-1313. 2015
2015 Structural patterns at all scales in a nonmetallic chiral Au133(SR)52 nanoparticleScience Advances.  1. 2015
2015 Quantifying bulk and surface recombination processes in nanostructured water splitting photocatalysts via in situ ultrafast spectroscopyNano Letters.  15:1076-1082. 2015
2015 Hybrid Si-VO2-Au optical modulator based on near-field plasmonic couplingOptics Express.  23:6878-6887. 2015
2014 Polarization selective phase-change nanomodulatorScientific Reports.  4. 2014
2014 Role of size and defects in ultrafast broadband emission dynamics of ZnO nanostructuresApplied Physics Letters.  104. 2014
2014 Ultrafast phase transition via catastrophic phonon collapse driven by plasmonic hot-electron injectionNano Letters.  14:1127-1133. 2014
2014 Enhanced broadband ultrafast detection of ultraviolet emission using optical Kerr gatingReview of Scientific Instruments.  85. 2014
2013 Switchable plasmon-induced transparency in gold nanoarrays on vanadium dioxide filmJournal of Vacuum Science and Technology B Microelectronics and Nanometer Structures.  31. 2013
2013 Electron-beam deposition of vanadium dioxide thin filmsApplied Physics A: Materials Science and Processing.  111:975-981. 2013
2013 Tracking the evolution of electronic and structural properties of VO 2 during the ultrafast photoinduced insulator-metal transitionPhysical review B: Condensed matter and materials physics.  87. 2013
2012 Ultrafast changes in lattice symmetry probed by coherent phononsNature Communications.  3. 2012
2012 Revealing plasmonic Gap modes in particle-on-film systems using dark-field spectroscopyACS Nano.  6:1380-1386. 2012
2012 Role of defects in the phase transition of VO 2 nanoparticles probed by plasmon resonance spectroscopyNano Letters.  12:780-786. 2012
2011 Detecting nanoscale size dependence in VO 2 phase transition using a split-ring resonator metamaterialNano Letters.  11:1025-1031. 2011
2010 Single-particle plasmon resonance spectroscopy of phase transition in vanadium dioxideOptics Letters.  35:3988-3990. 2010

Education And Training

  • Doctor of Philosophy in Physics, Vanderbilt University 2012
  • Full Name

  • Kannatassen Appavoo