The role of ligands in determining the exciton relaxation dynamics in semiconductor quantum dots

MD Peterson, LC Cass, RD Harris… - Annual review of …, 2014 - annualreviews.org
This article reviews the mechanisms through which molecules adsorbed to the surfaces of
semiconductor nanocrystals, quantum dots (QDs), influence the pathways for and dynamics …

On the kinetics and thermodynamics of excitons at the surface of semiconductor nanocrystals: Are there surface excitons?

P Kambhampati - Chemical Physics, 2015 - Elsevier
The surface of semiconductor nanocrystals is one of their defining features by virtue of their
nanometer size. Yet the surface is presently among the most poorly understood aspects of …

Hot exciton relaxation dynamics in semiconductor quantum dots: radiationless transitions on the nanoscale

P Kambhampati - The Journal of Physical Chemistry C, 2011 - ACS Publications
The ability to confine electrons and holes in semiconductor quantum dots (QDs) in the form
of excitons creates an electronic structure which is both novel and potentially useful for a …

Navigating the Potential Energy Surface of CdSe Magic-Sized Clusters: Synthesis and Interconversion of Atomically Precise Nanocrystal Polymorphs

HH Ripberger, KJ Schnitzenbaumer… - Journal of the …, 2023 - ACS Publications
Magic-sized clusters (MSCs) are kinetically stable, atomically precise intermediates along
the quantum dot (QD) reaction potential energy surface. Literature precedent establishes …

False multiple exciton recombination and multiple exciton generation signals in semiconductor quantum dots arise from surface charge trapping

P Tyagi, P Kambhampati - The Journal of Chemical Physics, 2011 - pubs.aip.org
Multiple exciton recombination (MER) and multiple exciton generation (MEG) are two of the
main processes for assessing the usefulness of quantum dots (QDs) in photovoltaic devices …

Challenge to the deep-trap model of the surface in semiconductor nanocrystals

J Mooney, MM Krause, JI Saari, P Kambhampati - Physical Review B …, 2013 - APS
Temperature-dependent photoluminescence spectra of a range of semiconductor
nanocrystals are presented which reveal an unanticipated thermodynamic relationship …

Multiexcitons in semiconductor nanocrystals: a platform for optoelectronics at high carrier concentration

P Kambhampati - The Journal of Physical Chemistry Letters, 2012 - ACS Publications
It is well-known that the shape, size, and composition of semiconductor nanocrystals give
rise to a quantized manifold of electronic states, that is, excitons. In addition, these …

Exciton-phonon coupling in individual ZnTe nanorods studied by resonant Raman spectroscopy

Q Zhang, J Zhang, MIB Utama, B Peng… - Physical Review B …, 2012 - APS
The exciton-phonon coupling in high-quality cubic phase zinc telluride (ZnTe) nanorods
(NRs) is investigated by resonant micro-Raman spectroscopy near the direct bandgap of …

Polaronic quantum confinement in bulk perovskite crystals revealed by state-resolved pump/probe spectroscopy

CD Sonnichsen, DP Strandell, PJ Brosseau… - Physical Review …, 2021 - APS
Disorder is intrinsic to weakly bound ionic systems and gives rise to specific electronic
processes. In recently developed perovskite ionic crystals, this dynamic lattice disorder is …

Colloidal quantum dots: Think outside the (particle-in-a-) box

KE Knowles, MT Frederick, DB Tice… - The Journal of …, 2012 - ACS Publications
This Perspective discusses recent work on mechanisms by which organic ligands affect the
electronic structure and exciton dynamics of colloidal quantum dots (QDs). Much of the work …