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Title: Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield

Abstract

A variety of optical applications rely on the absorption and reemission of light. The quantum yield of this process often plays an essential role. When the quantum yield deviates from unity by significantly less than 1%, applications such as luminescent concentrators and optical refrigerators become possible. To evaluate such high performance, we develop a measurement technique for luminescence efficiency with sufficient accuracy below one part per thousand. Photothermal threshold quantum yield is based on the quantization of light to minimize overall measurement uncertainty. This technique is used to guide a procedure capable of making ensembles of near-unity emitting cadmium selenide/cadmium sulfide (CdSe/CdS) core-shell quantum dots. We obtain a photothermal threshold quantum yield luminescence efficiency of 99.6 ± 0.2%, indicating nearly complete suppression of nonradiative decay channels.

Authors:
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Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Photonics at Thermodynamic Limits (PTL); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Scientific User Facilities Division (SC-22.3 )
OSTI Identifier:
1547624
Alternate Identifier(s):
OSTI ID: 1506408
Grant/Contract Number:  
AC02-05CH1123; SC0019140; AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 363 Journal Issue: 6432; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Hanifi, David A., Bronstein, Noah D., Koscher, Brent A., Nett, Zach, Swabeck, Joseph K., Takano, Kaori, Schwartzberg, Adam M., Maserati, Lorenzo, Vandewal, Koen, van de Burgt, Yoeri, Salleo, Alberto, and Alivisatos, A. Paul. Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield. United States: N. p., 2019. Web. doi:10.1126/science.aat3803.
Hanifi, David A., Bronstein, Noah D., Koscher, Brent A., Nett, Zach, Swabeck, Joseph K., Takano, Kaori, Schwartzberg, Adam M., Maserati, Lorenzo, Vandewal, Koen, van de Burgt, Yoeri, Salleo, Alberto, & Alivisatos, A. Paul. Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield. United States. doi:10.1126/science.aat3803.
Hanifi, David A., Bronstein, Noah D., Koscher, Brent A., Nett, Zach, Swabeck, Joseph K., Takano, Kaori, Schwartzberg, Adam M., Maserati, Lorenzo, Vandewal, Koen, van de Burgt, Yoeri, Salleo, Alberto, and Alivisatos, A. Paul. Thu . "Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield". United States. doi:10.1126/science.aat3803.
@article{osti_1547624,
title = {Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield},
author = {Hanifi, David A. and Bronstein, Noah D. and Koscher, Brent A. and Nett, Zach and Swabeck, Joseph K. and Takano, Kaori and Schwartzberg, Adam M. and Maserati, Lorenzo and Vandewal, Koen and van de Burgt, Yoeri and Salleo, Alberto and Alivisatos, A. Paul},
abstractNote = {A variety of optical applications rely on the absorption and reemission of light. The quantum yield of this process often plays an essential role. When the quantum yield deviates from unity by significantly less than 1%, applications such as luminescent concentrators and optical refrigerators become possible. To evaluate such high performance, we develop a measurement technique for luminescence efficiency with sufficient accuracy below one part per thousand. Photothermal threshold quantum yield is based on the quantization of light to minimize overall measurement uncertainty. This technique is used to guide a procedure capable of making ensembles of near-unity emitting cadmium selenide/cadmium sulfide (CdSe/CdS) core-shell quantum dots. We obtain a photothermal threshold quantum yield luminescence efficiency of 99.6 ± 0.2%, indicating nearly complete suppression of nonradiative decay channels.},
doi = {10.1126/science.aat3803},
journal = {Science},
number = 6432,
volume = 363,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aat3803

Citation Metrics:
Cited by: 13 works
Citation information provided by
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    Works referencing / citing this record:

    Quantum-confined stark effect in the ensemble of phase-pure CdSe/CdS quantum dots
    journal, January 2019