Academic Journal
Many-body Correlations and Exciton Complexes in CsPbBr3 Quantum Dots
| العنوان: | Many-body Correlations and Exciton Complexes in CsPbBr3 Quantum Dots |
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| المؤلفون: | Zhu, Chenglian, Nguyen, Tan, Boehme, Simon, C, Moskalenko, Anastasiia, Dirin, Dmitry, N, Bodnarchuk, Maryna, I, Katan, Claudine, Even, Jacky, Rainò, Gabriele, Kovalenko, Maksym, V |
| المساهمون: | Department of Chemistry and Applied Biosciences ETH Zürich (D-CHAB), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS), Swiss Federal Laboratories for Materials Science and Technology Dübendorf (EMPA), Institut des Fonctions Optiques pour les Technologies de l'informatiON (FOTON), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS), This project was funded by the European Union’s Horizon 2020 program, through a FET Open research and innovation action under the grant agreement No 899141 (PoLLoC). J.E. acknowledges financial support from the Institute Universitaire de France. C.Z, M.I.B. and G.R. acknowledge funding from the Swiss National Science Foundation (Grant No. 200021_192308, \"Q-Light -Engineered Quantum Light Sources with Nanocrystal Assemblies\"). The project was also partially supported by the Air Force Office of Scientific Research and the Office of Naval Research under award number FA8655-21-1-7013and by the Swiss National Science Foundation (Grant No. 188404, \"Novel inorganic light emitters: synthesis, spectroscopy and applications\")., European Project: 899141,PoLLoC |
| المصدر: | ISSN: 0935-9648. |
| بيانات النشر: | HAL CCSD Wiley-VCH Verlag |
| سنة النشر: | 2023 |
| المجموعة: | Université de Rennes 1: Publications scientifiques (HAL) |
| مصطلحات موضوعية: | CsPbBr3 QDs, binding energies in exciton complexes, configuration interaction methods, k.p effective mass calculations, polaron, quantum correlations, single quantum dot spectroscopy, [PHYS]Physics [physics] |
| الوصف: | International audience ; All-inorganic lead-halide perovskite (LHP) (CsPbX , X = Cl, Br, I) quantum dots (QDs) have emerged as a competitive platform for classical light-emitting devices (in the weak light-matter interaction regime, e.g., LEDs and laser), as well as for devices exploiting strong light-matter interaction at room temperature. Many-body interactions and quantum correlations among photogenerated exciton complexes play an essential role, for example, by determining the laser threshold, the overall brightness of LEDs, and the single-photon purity in quantum light sources. Here, by combining cryogenic single-QD photoluminescence spectroscopy with configuration-interaction (CI) calculations, the size-dependent trion and biexciton binding energies are addressed. Trion binding energies increase from 7 to 17 meV for QD sizes decreasing from 30 to 9 nm, while the biexciton binding energies increase from 15 to 30 meV, respectively. CI calculations quantitatively corroborate the experimental results and suggest that the effective dielectric constant for biexcitons slightly deviates from the one of the single excitons, potentially as a result of coupling to the lattice in the multiexciton regime. The findings here provide a deep insight into the multiexciton properties in all-inorganic LHP QDs, essential for classical and quantum optoelectronic devices. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/pmid/36537857; info:eu-repo/grantAgreement//899141/EU/Polariton logic/PoLLoC; hal-03927520; https://hal.science/hal-03927520; https://hal.science/hal-03927520/document; https://hal.science/hal-03927520/file/AdMater2022-2023_PoLLoC_multiexcitons_pagenumbers.pdf; PUBMED: 36537857 |
| DOI: | 10.1002/adma.202208354 |
| الاتاحة: | https://hal.science/hal-03927520 https://hal.science/hal-03927520/document https://hal.science/hal-03927520/file/AdMater2022-2023_PoLLoC_multiexcitons_pagenumbers.pdf https://doi.org/10.1002/adma.202208354 |
| Rights: | http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.8919F697 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/adma.202208354 |
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