دورية أكاديمية
Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield.
| العنوان: | Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield. |
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| المؤلفون: | Hanifi DA; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA., Bronstein ND; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA., Koscher BA; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.; Department of Chemistry and Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA., Nett Z; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA., Swabeck JK; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.; Department of Chemistry and Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA., Takano K; 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., Schwartzberg AM; The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA., Maserati L; The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA., Vandewal K; IMO-IMOMEC, and Institute for Materials Research, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium., van de Burgt Y; Microsystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, 5612AJ Eindhoven, Netherlands., Salleo A; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA. asalleo@stanford.edu paul.alivisatos@berkeley.edu., Alivisatos AP; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. asalleo@stanford.edu paul.alivisatos@berkeley.edu.; Department of Chemistry and Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA.; Kavli Energy NanoScience Institute, Berkeley, CA 94720, USA. |
| المصدر: | Science (New York, N.Y.) [Science] 2019 Mar 15; Vol. 363 (6432), pp. 1199-1202. |
| نوع المنشور: | Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 0404511 Publication Model: Print Cited Medium: Internet ISSN: 1095-9203 (Electronic) Linking ISSN: 00368075 NLM ISO Abbreviation: Science Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Publication: Original Publication: New York, N.Y. : [s.n.] 1880- |
| مستخلص: | 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. (Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.) |
| معلومات مُعتمدة: | International European Research Council |
| تواريخ الأحداث: | Date Created: 20190316 Latest Revision: 20191120 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1126/science.aat3803 |
| PMID: | 30872520 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1095-9203 |
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| DOI: | 10.1126/science.aat3803 |