Matter, volume 1, issue 1, pages 250-265

Epitaxial Dimers and Auger-Assisted Detrapping in PbS Quantum Dot Solids

Publication typeJournal Article
Publication date2019-07-10
Journal: Matter
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor18.9
ISSN25902393, 25902385, 25902385
General Materials Science
Abstract
Summary We explore the dynamic interaction of charge carriers between band-edge states and sub-band trap states in PbS quantum dot (QD) solids using time-resolved spectroscopy. In monodisperse arrays of 4- to 5-nm diameter PbS QDs, we observe an optically active trap state ∼100–200 meV below the band edge that occurs at a frequency of 1 in ∼2,500 QDs. Uncoupled QD solids with oleic acid ligands show trap-to-ground-state recombination that resembles Auger recombination. In electronically coupled QD solids, we observe entropically driven uphill thermalization of trapped charge carriers from the trap state to the band edge via two distinct mechanisms: Auger-assisted charge transfer (∼35 ps) and thermally activated hopping (∼500 ps). Photophysical characterization combined with atomistic simulations and high-resolution electron microscopy suggest that these states arise from epitaxially fused pairs of QDs rather than electron or hole traps at the QD surface, offering new strategies for improving the optoelectronic performance of QD materials.

Top-30

Citations by journals

1
2
3
4
5
ACS applied materials & interfaces
5 publications, 8.2%
Nano Letters
4 publications, 6.56%
Nature Communications
3 publications, 4.92%
Advanced Materials
3 publications, 4.92%
Journal of Physical Chemistry Letters
3 publications, 4.92%
ACS Applied Electronic Materials
3 publications, 4.92%
Chemistry of Materials
2 publications, 3.28%
ACS Nano
2 publications, 3.28%
Journal of Physical Chemistry C
2 publications, 3.28%
Journal of Materials Chemistry A
2 publications, 3.28%
Journal of Chemical Physics
1 publication, 1.64%
Applied Physics Reviews
1 publication, 1.64%
Optical and Quantum Electronics
1 publication, 1.64%
Nature Photonics
1 publication, 1.64%
Matter
1 publication, 1.64%
Nano Research
1 publication, 1.64%
Chem
1 publication, 1.64%
Joule
1 publication, 1.64%
Advanced Functional Materials
1 publication, 1.64%
Chemistry - An Asian Journal
1 publication, 1.64%
Advanced Science
1 publication, 1.64%
ACS Applied Energy Materials
1 publication, 1.64%
Accounts of Chemical Research
1 publication, 1.64%
ACS Energy Letters
1 publication, 1.64%
Physical Review Applied
1 publication, 1.64%
Chemical Science
1 publication, 1.64%
Energy and Environmental Science
1 publication, 1.64%
Nanoscale Horizons
1 publication, 1.64%
Chemical Society Reviews
1 publication, 1.64%
Science
1 publication, 1.64%
1
2
3
4
5

Citations by publishers

5
10
15
20
25
American Chemical Society (ACS)
25 publications, 40.98%
Wiley
8 publications, 13.11%
Elsevier
7 publications, 11.48%
Royal Society of Chemistry (RSC)
7 publications, 11.48%
Springer Nature
6 publications, 9.84%
American Institute of Physics (AIP)
2 publications, 3.28%
American Physical Society (APS)
1 publication, 1.64%
American Association for the Advancement of Science (AAAS)
1 publication, 1.64%
Pleiades Publishing
1 publication, 1.64%
Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 1.64%
IOP Publishing
1 publication, 1.64%
5
10
15
20
25
  • We do not take into account publications without a DOI.
  • Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
  • Statistics recalculated weekly.

Are you a researcher?

Create a profile to get free access to personal recommendations for colleagues and new articles.
Metrics
Share
Cite this
GOST |
Cite this
GOST Copy
Gilmore R. H. et al. Epitaxial Dimers and Auger-Assisted Detrapping in PbS Quantum Dot Solids // Matter. 2019. Vol. 1. No. 1. pp. 250-265.
GOST all authors (up to 50) Copy
Gilmore R. H., Liu Y., Shcherbakov Wu W., Dahod N. S., Lee E. M. Y., Weidman M. C., Li H., Jean J., Bulović V., Willard A. P., Grossman J. A., TISDALE W. A. Epitaxial Dimers and Auger-Assisted Detrapping in PbS Quantum Dot Solids // Matter. 2019. Vol. 1. No. 1. pp. 250-265.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1016/j.matt.2019.05.015
UR - https://doi.org/10.1016/j.matt.2019.05.015
TI - Epitaxial Dimers and Auger-Assisted Detrapping in PbS Quantum Dot Solids
T2 - Matter
AU - Gilmore, Rachel H.
AU - Liu, Yun
AU - Shcherbakov Wu, Wenbi
AU - Dahod, Nabeel S
AU - Lee, Elizabeth M Y
AU - Weidman, Mark C.
AU - Li, Hua-Shan
AU - Jean, J.
AU - Bulović, Vladimir
AU - Willard, Adam P.
AU - Grossman, Jeffrey A.
AU - TISDALE, WILLIAM A.
PY - 2019
DA - 2019/07/10 00:00:00
PB - Elsevier
SP - 250-265
IS - 1
VL - 1
SN - 2590-2393
SN - 2590-2385
SN - 2590-2385
ER -
BibTex |
Cite this
BibTex Copy
@article{2019_Gilmore,
author = {Rachel H. Gilmore and Yun Liu and Wenbi Shcherbakov Wu and Nabeel S Dahod and Elizabeth M Y Lee and Mark C. Weidman and Hua-Shan Li and J. Jean and Vladimir Bulović and Adam P. Willard and Jeffrey A. Grossman and WILLIAM A. TISDALE},
title = {Epitaxial Dimers and Auger-Assisted Detrapping in PbS Quantum Dot Solids},
journal = {Matter},
year = {2019},
volume = {1},
publisher = {Elsevier},
month = {jul},
url = {https://doi.org/10.1016/j.matt.2019.05.015},
number = {1},
pages = {250--265},
doi = {10.1016/j.matt.2019.05.015}
}
MLA
Cite this
MLA Copy
Gilmore, Rachel H., et al. “Epitaxial Dimers and Auger-Assisted Detrapping in PbS Quantum Dot Solids.” Matter, vol. 1, no. 1, Jul. 2019, pp. 250-265. https://doi.org/10.1016/j.matt.2019.05.015.
Found error?