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http://hdl.handle.net/1942/30223
Title: | Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield | Authors: | 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 |
Issue Date: | 2019 | Publisher: | AMER ASSOC ADVANCEMENT SCIENCE | Source: | SCIENCE, 363(6432), p. 1199-+ | 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. | Notes: | [Hanifi, David A.; Salleo, Alberto] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA. [Bronstein, Noah D.; Koscher, Brent A.; Nett, Zach; Swabeck, Joseph K.; Alivisatos, A. Paul] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA. [Koscher, Brent A.; Swabeck, Joseph K.; Alivisatos, A. Paul] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Koscher, Brent A.; Swabeck, Joseph K.; Alivisatos, A. Paul] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Takano, Kaori] JXTG Nippon Oil & Energy Corp, Mat R&D Grp, HPM Res & Dev Dept, High Performance Mat Co,Naka Ku, 8 Chidori Cho, Yokohama, Kanagawa 2310815, Japan. [Schwartzberg, Adam M.; Maserati, Lorenzo] Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA. [Vandewal, Koen] Hasselt Univ, IMO IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Vandewal, Koen] Hasselt Univ, Inst Mat Res, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [van de Burgt, Yoeri] Eindhoven Univ Technol, Inst Complex Mol Syst, Microsyst, NL-5612 AJ Eindhoven, Netherlands. [Alivisatos, A. Paul] Kavli Energy NanoSci Inst, Berkeley, CA 94720 USA. [Maserati, Lorenzo] Ist Italiano Tecnol, Ctr Nano Sci & Technol PoliMi, Via Giovanni Pascoli 70-3, I-20133 Milan, Italy. | Document URI: | http://hdl.handle.net/1942/30223 | ISSN: | 0036-8075 | e-ISSN: | 1095-9203 | DOI: | 10.1126/science.aat3803 | ISI #: | 000461329000044 | Rights: | 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2020 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
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hanifi 1.pdf Restricted Access | Published version | 2.37 MB | Adobe PDF | View/Open Request a copy |
FinalManuscript_Hanifi.pdf | Peer-reviewed author version | 1.12 MB | Adobe PDF | View/Open |
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