Toward nanocrystal-based active nanophotonic ...
Document type :
Communication dans un congrès avec actes
Title :
Toward nanocrystal-based active nanophotonic device
Author(s) :
Dang Huu, Tung [Auteur]
Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure] [LPTENS]
Vasanelli, Angela [Auteur]
Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure] [LPTENS]
Todorov, Yanko [Auteur]
Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure] [LPTENS]
Sirtori, Carlo [Auteur]
Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure] [LPTENS]
Prado, Yoann [Auteur]
Nanostructures et optique [INSP-E4]
Delerue, Christophe [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Lhuillier, Emmanuel [Auteur]
Physico-chimie et dynamique des surfaces [INSP-E6]
Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure] [LPTENS]
Vasanelli, Angela [Auteur]
Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure] [LPTENS]
Todorov, Yanko [Auteur]
Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure] [LPTENS]
Sirtori, Carlo [Auteur]
Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure] [LPTENS]
Prado, Yoann [Auteur]
Nanostructures et optique [INSP-E4]
Delerue, Christophe [Auteur]
Physique - IEMN [PHYSIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Lhuillier, Emmanuel [Auteur]
Physico-chimie et dynamique des surfaces [INSP-E6]
Conference title :
nanoGe Fall Meeting 2021
City :
Online
Country :
Espagne
Start date of the conference :
2021-10-18
Publisher :
Fundació Scito
HAL domain(s) :
Sciences de l'ingénieur [physics]
English abstract : [en]
One of the great interests for colloidal nanocrystals (NCs) is their optical tunability controlled by the synthesis processes. Nonetheless, for NC-based devices, post-fabrication tunability remains very limited.1 Here, we ...
Show more >One of the great interests for colloidal nanocrystals (NCs) is their optical tunability controlled by the synthesis processes. Nonetheless, for NC-based devices, post-fabrication tunability remains very limited.1 Here, we show a NC-based active photonic device where the optical tunability is achieved thanks to an inhomogeneous absorption obtained by coupling a HgTe nanocrystal2 array to a plasmonic cavity. Bias tunability results from hopping transport which enables tuning the charge collection from low-field regions (in the very vicinity of the electrodes) to high-field ones (away from the electrodes).3 As a result, we observe a 15 meV blueshift of the photocurrent spectrum for a device working in the extended short-wave infrared under the application of 3 V bias voltage.3 This shift has the opposite sign with respect to the redshift expected from Stark effect while occurring under much weaker applied electric fields. We show that hopping transport, often seen as a bottleneck to achieve high-performing optoelectronic devices, can play an essential role in the operation of active photonic devices.Show less >
Show more >One of the great interests for colloidal nanocrystals (NCs) is their optical tunability controlled by the synthesis processes. Nonetheless, for NC-based devices, post-fabrication tunability remains very limited.1 Here, we show a NC-based active photonic device where the optical tunability is achieved thanks to an inhomogeneous absorption obtained by coupling a HgTe nanocrystal2 array to a plasmonic cavity. Bias tunability results from hopping transport which enables tuning the charge collection from low-field regions (in the very vicinity of the electrodes) to high-field ones (away from the electrodes).3 As a result, we observe a 15 meV blueshift of the photocurrent spectrum for a device working in the extended short-wave infrared under the application of 3 V bias voltage.3 This shift has the opposite sign with respect to the redshift expected from Stark effect while occurring under much weaker applied electric fields. We show that hopping transport, often seen as a bottleneck to achieve high-performing optoelectronic devices, can play an essential role in the operation of active photonic devices.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Comment :
Contributed talk, presentation 054
Source :