Dual-resonance nanostructures for color downconversion of colloidal quantum emitters
We present a dual-resonance nanostructure made of a titanium dioxide (TiO2) subwavelength grating to enhance the color downconversion efficiency of CdxZn1-xSeyS1-y colloidal quantum dots (QDs) emitting at ∼530 nm when excited with a blue light at ∼460 nm. A large mode volume can be created within th...
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sg-ntu-dr.10356-1748042024-04-12T03:05:40Z Dual-resonance nanostructures for color downconversion of colloidal quantum emitters Ha, Son Tung Lassalle, Emmanuel Liang, Xiao Do, Thi Thu Ha Foo, Ian Shendre, Sushant Durmusoglu, Emek Goksu Valuckas, Vytautas Adhikary, Sourav Paniagua-Dominguez, Ramon Demir, Hilmi Volkan Kuznetsov, Arseniy I. School of Physical and Mathematical Sciences School of Electrical and Electronic Engineering LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays The Photonics Institute Engineering Guided mode resonance Titanium dioxide We present a dual-resonance nanostructure made of a titanium dioxide (TiO2) subwavelength grating to enhance the color downconversion efficiency of CdxZn1-xSeyS1-y colloidal quantum dots (QDs) emitting at ∼530 nm when excited with a blue light at ∼460 nm. A large mode volume can be created within the QD layer by the hybridization of the grating resonances and waveguide modes, resulting in large absorption and emission enhancements. Particularly, we achieved polarized light emission with a maximum photoluminescence enhancement of ∼140 times at a specific angular direction and a total enhancement of ∼34 times within a 0.55 numerical aperture (NA) of the collecting objective. The enhancement encompasses absorption, Purcell and outcoupling enhancements. We achieved a total absorption of 35% for green QDs with a remarkably thin color conversion layer of ∼400 nm. This work provides a guideline for designing large-volume cavities for absorption/fluorescence enhancement in microLED display, detector, or photovoltaic applications. Agency for Science, Technology and Research (A*STAR) The authors acknowledges funding support from Singapore MTC-Programmatic Grant No. M21J9b0085. S.T.H. also acknowledges support under the Singapore AME Young Individual Research Grant No. A2084c0177. 2024-04-12T03:05:40Z 2024-04-12T03:05:40Z 2023 Journal Article Ha, S. T., Lassalle, E., Liang, X., Do, T. T. H., Foo, I., Shendre, S., Durmusoglu, E. G., Valuckas, V., Adhikary, S., Paniagua-Dominguez, R., Demir, H. V. & Kuznetsov, A. I. (2023). Dual-resonance nanostructures for color downconversion of colloidal quantum emitters. Nano Letters, 23(24), 11802-11808. https://dx.doi.org/10.1021/acs.nanolett.3c03786 1530-6984 https://hdl.handle.net/10356/174804 10.1021/acs.nanolett.3c03786 38085099 2-s2.0-85180086683 24 23 11802 11808 en M21J9b0085 Nano Letters © 2023 American Chemical Society. All rights reserved. |
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Engineering Guided mode resonance Titanium dioxide Ha, Son Tung Lassalle, Emmanuel Liang, Xiao Do, Thi Thu Ha Foo, Ian Shendre, Sushant Durmusoglu, Emek Goksu Valuckas, Vytautas Adhikary, Sourav Paniagua-Dominguez, Ramon Demir, Hilmi Volkan Kuznetsov, Arseniy I. Dual-resonance nanostructures for color downconversion of colloidal quantum emitters |
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We present a dual-resonance nanostructure made of a titanium dioxide (TiO2) subwavelength grating to enhance the color downconversion efficiency of CdxZn1-xSeyS1-y colloidal quantum dots (QDs) emitting at ∼530 nm when excited with a blue light at ∼460 nm. A large mode volume can be created within the QD layer by the hybridization of the grating resonances and waveguide modes, resulting in large absorption and emission enhancements. Particularly, we achieved polarized light emission with a maximum photoluminescence enhancement of ∼140 times at a specific angular direction and a total enhancement of ∼34 times within a 0.55 numerical aperture (NA) of the collecting objective. The enhancement encompasses absorption, Purcell and outcoupling enhancements. We achieved a total absorption of 35% for green QDs with a remarkably thin color conversion layer of ∼400 nm. This work provides a guideline for designing large-volume cavities for absorption/fluorescence enhancement in microLED display, detector, or photovoltaic applications. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Ha, Son Tung Lassalle, Emmanuel Liang, Xiao Do, Thi Thu Ha Foo, Ian Shendre, Sushant Durmusoglu, Emek Goksu Valuckas, Vytautas Adhikary, Sourav Paniagua-Dominguez, Ramon Demir, Hilmi Volkan Kuznetsov, Arseniy I. |
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Article |
author |
Ha, Son Tung Lassalle, Emmanuel Liang, Xiao Do, Thi Thu Ha Foo, Ian Shendre, Sushant Durmusoglu, Emek Goksu Valuckas, Vytautas Adhikary, Sourav Paniagua-Dominguez, Ramon Demir, Hilmi Volkan Kuznetsov, Arseniy I. |
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Ha, Son Tung |
title |
Dual-resonance nanostructures for color downconversion of colloidal quantum emitters |
title_short |
Dual-resonance nanostructures for color downconversion of colloidal quantum emitters |
title_full |
Dual-resonance nanostructures for color downconversion of colloidal quantum emitters |
title_fullStr |
Dual-resonance nanostructures for color downconversion of colloidal quantum emitters |
title_full_unstemmed |
Dual-resonance nanostructures for color downconversion of colloidal quantum emitters |
title_sort |
dual-resonance nanostructures for color downconversion of colloidal quantum emitters |
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2024 |
url |
https://hdl.handle.net/10356/174804 |
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1814047015789658112 |