6 papers
Full Quantum and Mixed Quantum--Classical Dynamics of Hot Exciton Cooling in Semiconductor Nanocrystals
Bokang Hou, Johan E. Runeson, Samuel L. Rudge +4
Hot-exciton relaxation in semiconductor nanocrystals (NCs) is often described using perturbative theories, but their accuracy is difficult to assess for realistic exciton--phonon H…
Photoluminescence Line Shapes of Nanocrystals: Contributions from First- and Second-Order Vibronic Couplings
Kaiyue Peng, Bokang Hou, Kailai Lin +3
We present a microscopic, parameter-free approach for computing the photoluminescence spectra of a single semiconductor nanocrystal. The method derives exciton-phonon coupling dire…
Unraveling Exciton Trap Dynamics and Nonradiative Loss Pathways in Quantum Dots via Atomistic Simulations
Bokang Hou, Salvatore Gatto, Samuel L. Rudge +3
Surface defects in colloidal quantum dots are a major source of nonradiative losses, yet the microscopic mechanisms underlying exciton trapping and recombination remain elusive. He…
Revealing the phonon bottleneck limit in negatively charged CdS quantum dots
Skylar J. Sherman, Bokang Hou, Matthew J. Coley-O'Rourke +4
The capture of photoexcited hot electrons in semiconductors before they lose their excess energy to cooling is a long-standing goal in photon energy conversion. Semiconductor nanoc…
The Role of Superlattice Phonons in Charge Localization Across Quantum Dot Arrays
Bokang Hou, Matthew Coley-O'Rourke, Uri Banin +2
Understanding charge transport in semiconductor quantum dot (QD) assemblies is important for developing the next generation of solar cells and light-harvesting devices based on QD…
Intrinsically slow cooling of hot electrons in CdSe nanocrystals compared to CdS
Matthew J. Coley-O'Rourke, Bokang Hou, Skylar J. Sherman +2
The utilization of excited charge carriers in semiconductor nanocrystals (NCs) for optoelectronic technologies has been a long-standing goal in the field of nanoscience. Experiment…