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. doi:10.1021/jacs.8b02612. https://resolver.caltech.edu/CaltechAUTHORS:20180620-153421260

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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:

URL	URL Type	Description
https://doi.org/10.1021/jacs.8b02612	DOI	Article
https://pubs.acs.org/doi/suppl/10.1021/jacs.8b02612	Publisher	Supporting Information

ORCID:

Author	ORCID
Swabeck, Joseph K.	0000-0003-2235-2472
Fischer, Stefan	0000-0003-4110-6576
Bronstein, Noah D.	0000-0003-3657-2652
Alivisatos, A. Paul	0000-0001-6895-9048

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 Agency	Grant Number
Department of Energy (DOE)	DE-AC02-05CH11231
Department of Energy (DOE)	DE-SC0001293

Issue or Number:

DOI:

10.1021/jacs.8b02612

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

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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:

15 Nov 2021 20:46

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