Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield-Reference-Cited by-同舟云学术

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

Published:2019-03-15 Issue:6432 Volume:363 Page:1199-1202
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Hanifi David A.¹^ORCID,Bronstein Noah D.²^ORCID,Koscher Brent A.²³^ORCID,Nett Zach²^ORCID,Swabeck Joseph K.²³^ORCID,Takano Kaori⁴^ORCID,Schwartzberg Adam M.⁵^ORCID,Maserati Lorenzo⁵^ORCID,Vandewal Koen⁶^ORCID,van de Burgt Yoeri⁷^ORCID,Salleo Alberto¹^ORCID,Alivisatos A. Paul²³⁸^ORCID

Affiliation:

1. Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.

2. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

3. Department of Chemistry and Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA.

4. Materials R&D Group, HPM Research and Development Department, High Performance Materials Company, JXTG Nippon Oil & Energy Corporation, 8 Chidori-Cho, Naka-ku, Yokohama, Kanagawa, 231-0815, Japan.

5. The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

6. IMO-IMOMEC, and Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium.

7. Microsystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, 5612AJ Eindhoven, Netherlands.

8. Kavli Energy NanoScience Institute, Berkeley, CA 94720, USA.

Abstract

Superefficient light emission A challenge to improving synthesis methods for superefficient light-emitting semiconductor nanoparticles is that current analytical methods cannot measure efficiencies above 99%. Hanifi et al. used photothermal deflection spectroscopy to measure very small nonradiative decay components in quantum dot photoluminescence. The method allowed them to tune the synthesis of CdSe/CdS quantum dots so that the external luminescent efficiencies exceeded 99.5%. This is important for applications that require an absolute minimum amount of photon energy to be lost as heat, such as photovoltaic luminescent concentrators. Science , this issue p. 1199

Funder

U.S. Department of Energy

European Research Council

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference28 articles.

1. Emergence of colloidal quantum-dot light-emitting technologies

2. Quantum Dots for Live Cells, in Vivo Imaging, and Diagnostics

3. Luminescent greenhouse collector for solar radiation

4. Performance evaluation of thin-film solar concentrators for greenhouse applications

5. Optical Refrigeration in Nd-Doped Yttrium Aluminum Garnet

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