Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells

Colloidal quantum wells (CQWs) provide an appealing platform to achieve emissive many-body correlations for novel optoelectronic devices, given that they act as hosts for strong carrier Coulomb interactions and present suppressed Auger recombination. However, the demonstrated high-order excitonic em...

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Main Authors: Yu, Junhong, Sharma, Manoj, Li, Mingjie, Liu, Baiquan, Hernández-Martínez, Pedro Ludwig, Delikanli, Savas, Sharma, Ashma, Altintas, Yemliha, Hettiarachchi, Chathuranga, Sum, Tze Chien, Demir, Hilmi Volkan, Dang, Cuong
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/168692
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1686922023-06-16T15:40:17Z Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells Yu, Junhong Sharma, Manoj Li, Mingjie Liu, Baiquan Hernández-Martínez, Pedro Ludwig Delikanli, Savas Sharma, Ashma Altintas, Yemliha Hettiarachchi, Chathuranga Sum, Tze Chien Demir, Hilmi Volkan Dang, Cuong School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays Centre for OptoElectronics and Biophotonics The Photonics Institute CNRS International NTU THALES Research Alliances Engineering::Electrical and electronic engineering Colloidal Quantum Wells High-Order Excitonic States Colloidal quantum wells (CQWs) provide an appealing platform to achieve emissive many-body correlations for novel optoelectronic devices, given that they act as hosts for strong carrier Coulomb interactions and present suppressed Auger recombination. However, the demonstrated high-order excitonic emission in CQWs requires ultrafast pumping with high excitation levels and can only be spectrally resolved at the single-particle level under cryogenic conditions. Here, through systematic investigation using static power-dependent emission spectroscopy and transient carrier dynamics, we show that Cu-doped CdSe CQWs exhibit continuous-wave-pumped high-order excitonic emission at room temperature with a large binding energy of ∼64 meV. We attribute this unique behavior to dopant excitons in which the ultralong lifetime and the highly localized wavefunction facilitate the formation of many-body correlations. The spectrally resolved high-order excitonic emission generated at power levels compatible with solar irradiation and electrical injection might pave the way for novel solution-processed solid-state devices. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Published version C.D. is grateful for the financial support from the Ministry of Education, Singapore, under its AcRF Tier 2 grant (MOE-T2EP50121-0012). H.V.D. acknowledges the financial support in part from the Singapore Agency for Science, Technology and Research (A*STAR) MTC program under grant no. M21J9b0085, the Ministry of Education, Singapore, under its Academic Research Fund Tier 1 (MOE-RG62/20), and in part from TUBITAK 119N343, 20AG001, 121N395, and 121C266. H.V.D. also acknowledges support from TUBA and TUBITAK 2247-A National Leader Researchers Program (121C266). M.S. also acknowledges the funding through the Australian Research Council Center of Excellence in Exciton Science (grant no. CE170100026). 2023-06-15T02:49:43Z 2023-06-15T02:49:43Z 2022 Journal Article Yu, J., Sharma, M., Li, M., Liu, B., Hernández-Martínez, P. L., Delikanli, S., Sharma, A., Altintas, Y., Hettiarachchi, C., Sum, T. C., Demir, H. V. & Dang, C. (2022). Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells. Cell Reports Physical Science, 3(9), 101049-. https://dx.doi.org/10.1016/j.xcrp.2022.101049 2666-3864 https://hdl.handle.net/10356/168692 10.1016/j.xcrp.2022.101049 2-s2.0-85138207712 9 3 101049 en MOE-T2EP50121-0012 M21J9b0085 MOE-RG62/20 Cell Reports Physical Science © 2022 The Authors. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Colloidal Quantum Wells
High-Order Excitonic States
spellingShingle Engineering::Electrical and electronic engineering
Colloidal Quantum Wells
High-Order Excitonic States
Yu, Junhong
Sharma, Manoj
Li, Mingjie
Liu, Baiquan
Hernández-Martínez, Pedro Ludwig
Delikanli, Savas
Sharma, Ashma
Altintas, Yemliha
Hettiarachchi, Chathuranga
Sum, Tze Chien
Demir, Hilmi Volkan
Dang, Cuong
Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells
description Colloidal quantum wells (CQWs) provide an appealing platform to achieve emissive many-body correlations for novel optoelectronic devices, given that they act as hosts for strong carrier Coulomb interactions and present suppressed Auger recombination. However, the demonstrated high-order excitonic emission in CQWs requires ultrafast pumping with high excitation levels and can only be spectrally resolved at the single-particle level under cryogenic conditions. Here, through systematic investigation using static power-dependent emission spectroscopy and transient carrier dynamics, we show that Cu-doped CdSe CQWs exhibit continuous-wave-pumped high-order excitonic emission at room temperature with a large binding energy of ∼64 meV. We attribute this unique behavior to dopant excitons in which the ultralong lifetime and the highly localized wavefunction facilitate the formation of many-body correlations. The spectrally resolved high-order excitonic emission generated at power levels compatible with solar irradiation and electrical injection might pave the way for novel solution-processed solid-state devices.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Yu, Junhong
Sharma, Manoj
Li, Mingjie
Liu, Baiquan
Hernández-Martínez, Pedro Ludwig
Delikanli, Savas
Sharma, Ashma
Altintas, Yemliha
Hettiarachchi, Chathuranga
Sum, Tze Chien
Demir, Hilmi Volkan
Dang, Cuong
format Article
author Yu, Junhong
Sharma, Manoj
Li, Mingjie
Liu, Baiquan
Hernández-Martínez, Pedro Ludwig
Delikanli, Savas
Sharma, Ashma
Altintas, Yemliha
Hettiarachchi, Chathuranga
Sum, Tze Chien
Demir, Hilmi Volkan
Dang, Cuong
author_sort Yu, Junhong
title Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells
title_short Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells
title_full Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells
title_fullStr Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells
title_full_unstemmed Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells
title_sort efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells
publishDate 2023
url https://hdl.handle.net/10356/168692
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