Jing Li

Jing Li
Institut Néel, CNRS and Grenoble Alpes University
Equipe : Théorie de la matière condensée
Tuesday, October 24th 11.30 am/ Salle du conseil LCI

Abstract :
The description of the electronic and optical properties of complex supramolecular systems such as
those of interest in organic electronics represents a severe challenge for first principles techniques,
owing to the large molecular dimensions and to the ubiquitous presence of disorder. We will report
on our original hybrid QM/MM scheme merging many-body perturbation theory (GW formalism
and Bethe-Salpeter equation) with accurate classical polarizable models of atomistic resolution. Our
results for bulk pentacene prove that the gap is insensitive to the partitioning of molecules in QM
and MM subsystems, as a result of the mutual compensation of quantum and classical
polarizabilities, clarifying the relation between polarization energy and charge delocalization. Our
embedded GW calculations, are capable to accurately describe ionization energies and electron
affinities at crystal surfaces of penatcene and perfluoropentacene from first principles.

The electronic and optical properties of the paradigmatic F4TCNQ-doped pentacene in the lowdoping
limit are investigated by a combination of state-of-the-art GW and Berthe-Salpeter manybody
ab initio methods accounting for environmental screening effects, and a carefully
parametrized model Hamiltonian. We demonstrate that while the acceptor level lies very deep in the
gap, the inclusion of electron-hole interactions strongly stabilizes dopant-semiconductor charge
transfer states and, together with spin statistics and structural relaxation effects, rationalize the
possibility for room-temperature dopant ionization. Our findings reconcile available experimental
data, shedding light on the partial vs. full charge transfer scenario discussed in the literature, and
question the relevance of the standard classification in shallow or deep impurity levels prevailing
for inorganic semiconductors.

References :
J. Li, G. D’Avino, I. Duchemin, D. Beljonne, X. Blase, J. Phys. Chem. Lett. 7, 2814 (2016)
J. Li, G. D’Avino, A. Pershin, D. Jacquemin , I. Duchemin, D. Beljonne, X. Blase, Phys. Rev.
Materials, 1, 025602 (2017)

En partenariat avec l’association AFELIM, CAPTRONIC et l’IEMN vous proposent une journée autour de l’électronique imprimée au sein de l’IEMN afin de découvrir le développement de la filière et des multiples applications.

Objectif :  Faire un tour d’horizon des différents maillons de la chaîne : innovations, formulations, impressions, afin d’identifier les applications possibles.

PROGRAMME

• 10H00 Accueil des participants
• 10h30 Introduction
  Présentation de CAPTRONIC, Edmond PATERNOGA
• 10H50 Présentation AFELIM, association française de l’électronique imprimée
  Anne-Lise MARECHAL, AFELIM
• 11H00 Encres argent et autres matériaux pour circuits
  Henri HAPPY, IEMN
• 11H30 Capteurs sur substrats souples
  Christophe MATHIEU, LINXENS
• 12H00 L’impression « électronisée »
  Laurent LENGLET, CENTRE TECHNIQUE DU PAPIER
• 12H30 Buffet
• 14H00 Encres et colles pour l’électronique imprimée
  Alexandre LONG, PROTAVIC INTERNATIONAL
• 14H30 Application : Dalles tactiles
  Laurent SCHNEIDER, KERDAINO
• 15H00 Le papier devient intelligent
  Victor MADELAINE, ARJOWIGGINS CREATIVE PAPERS
• 15H30 Présentation de la plateforme technologique LEAF
  Emmanuel DUBOIS, IEMN
  Conclusions : Opportunités et Besoins potentiels, Questions/Réponses
• 16H00 Visite de la plateforme LEAF

INFORMATIONS PRATIQUES

Date et lieu : Jeudi 19 octobre 2017 de 10h00 à 16h00
Institut d’Electronique, de Microélectronique et de Nanotechnologie
Avenue Poincaré – CS 60069 – 59652 VILLENEUVE D’ASCQ CEDEX

Prix  : Gratuit, les frais de cette journée sont pris en charge par Cap’tronic

Contact  : Edmond PATERNOGA – paternoga@captronic.fr

Amin Arbabian
Assistant Professor, Department of Electrical Engineering
Stanford University
Wednesday, October 18th 5.30 pm / Amphi Jean Noël Decarpigny, ISEN Lille

Abstract:
Advances in healthcare technologies have mainly focused on therapeutics, interventional procedures, and “late-stage” diagnostics. These steps have undergone significant improvements, leading to higher survival rates and enhancements in quality of life. Nevertheless, current trends are unsustainable due to the inadequate outcomes on specific critical diseases and skyrocketing national healthcare costs. An important example is cancer, where mortality rates have not seen major improvements, even with the tremendous technological advances in diagnostic imaging tools over the last four decades.

In this talk I will outline our efforts in better marrying technology and healthcare with new systems that 1) enable continuous “Nyquist” imaging and screening to enable preventive/predictive care, and 2) introduce smart implants for precision monitoring and closed-loop therapies. Preventive screening through continuous monitoring has the potential to fundamentally revamp our understanding of disease as well as targeted therapy. Today, the human body is monitored infrequently, perhaps on an annual basis and with a low “resolution”. This is in contrast with advanced electronic systems (many of which our community designs and ships), which are frequently monitored and calibrated. I will summarize a few example projects that aim to address these issues, including portable, semiconductor-based, “Tricorder” imaging systems, ultrasound-powered implantable devices that can measure, detect, and act upon local physiological changes through closed-loop neuromodulation or “electroceuticals”, and finally our new investigation of a noninvasive methods of neuromodulation based on ultrasonic excitation.

Short Bio:
Amin Arbabian received his Ph.D. degree in EECS from UC Berkeley in 2011 and in 2012 joined Stanford University, as an Assistant Professor of Electrical Engineering. His research interests are in mm-wave and high-frequency circuits and systems, imaging technologies, and ultra-low power sensors and implantable devices. Prof. Arbabian currently serves on the steering committee of RFIC, the technical program committees of RFIC and ESSCIRC, and as associate editor of the IEEE Solid-State Circuits Letters (SSC-L) and the IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology (J-ERM). He is the recipient or co-recipient of the 2016 Stanford University Tau Beta Pi Award for Excellence in Undergraduate Teaching, 2015 NSF CAREER award, 2014 DARPA Young Faculty Award (YFA) including the Director’s Fellowship in 2016, 2013 Hellman faculty scholarship, and best paper awards from several conferences including ISSCC (2010), VLSI Circuits (2014), RFIC symposium (2nd place, 2008 and 2011), ICUWB (2013), PIERS (2015), and the MTT-S BioWireless symposium (2016).

22 et 23 juin – IEMN – Amphithéâtre LCI – Villeneuve d’Ascq

L’objectif de ces journées est de réunir au niveau national les acteurs français et francophones impliqués dans la recherche sur le silicium et les semi-conducteurs/oxydes poreux et leurs applications.

Cette 4ème édition des journées SCOPe sera l’occasion pour notre communauté de partager nos dernières avancées dans le domaine et de promouvoir la jeune génération.

Les doctorants et post-doctorants seront prioritaires pour les présentations orales.

Thèmatiques abordées :

• Elaboration, techniques de fabrication, structures
• Luminescence et photonique
• Microélectronique
• Systèmes et intégration
• Coatings fonctionnels
• Capteurs
• Photovoltaic
• Matériaux d’électrodes, énergie, conversion, stockage
• Imagerie médicale, thérapie

PRESENTATION