CaltechAUTHORS
  A Caltech Library Service

Broadband sensitization of lanthanide emission with indium phosphide quantum dots for visible to NIR downshifting

Swabeck, Joseph K. and Fischer, Stefan and Bronstein, Noah D. and Alivisatos, A. Paul (2018) Broadband sensitization of lanthanide emission with indium phosphide quantum dots for visible to NIR downshifting. Journal of the American Chemical Society, 140 (29). pp. 9120-9126. ISSN 0002-7863. https://resolver.caltech.edu/CaltechAUTHORS:20180620-153421260

[img] PDF - Accepted Version
See Usage Policy.

780Kb
[img] PDF (Experimental details on the material and optical characterizations; supplementary results and discussions) - Supplemental Material
See Usage Policy.

1336Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20180620-153421260

Abstract

Semiconductor quantum dot (QD)-sensitized lanthanide ions hold great promise in producing a broadly absorbing and sharply emitting luminophore, but their synthesis has proven to be difficult. We report the first synthesis of core/shell/shell InP/Ln_xY_(1–x)F_3/ShF_3 (Ln = Yb, Nd; Sh = Lu, Y) nanocrystals that exhibit a broad visible absorption coupled to a sharp near-infrared emission. Additionally, this is the first report of Nd being coupled to a QD absorber. We characterize the system with a variety of electron microscopy and X-ray techniques that prove this unique structure. Optical measurements confirm the correlation of the Ln^(3+) emission to the QD absorption, while the presence of a trap-state emission gives a clue as to the mechanism of energy transfer between the dot and the lanthanide.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/jacs.8b02612DOIArticle
https://pubs.acs.org/doi/suppl/10.1021/jacs.8b02612PublisherSupporting Information
ORCID:
AuthorORCID
Swabeck, Joseph K.0000-0003-2235-2472
Fischer, Stefan0000-0003-4110-6576
Bronstein, Noah D.0000-0003-3657-2652
Alivisatos, A. Paul0000-0001-6895-9048
Additional Information:© 2018 American Chemical Society. Received: March 12, 2018; Published: June 20, 2018. The authors thank Brent Koscher for general advice and Matthew Marcus and Sirine Fakra of ALS beamline 10.3.2 for help with EXAFS measurements. The work was supported by the Light-Material Interactions in Energy Conversion, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-AC02-05CH11231, part of the EFRC at Caltech under DE-SC0001293. Work at the Molecular Foundry was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-05CH11231. This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. The authors declare no competing financial interest.
Group:JCAP
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-05CH11231
Department of Energy (DOE)DE-SC0001293
Issue or Number:29
Record Number:CaltechAUTHORS:20180620-153421260
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180620-153421260
Official Citation:Broadband Sensitization of Lanthanide Emission with Indium Phosphide Quantum Dots for Visible to Near-Infrared Downshifting. Joseph K. Swabeck, Stefan Fischer, Noah D. Bronstein, and A. Paul Alivisatos. Journal of the American Chemical Society 2018 140 (29), 9120-9126. DOI: 10.1021/jacs.8b02612
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87277
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:20 Jun 2018 22:45
Last Modified:03 Oct 2019 19:54

Repository Staff Only: item control page