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DTSTAMP:20260414T102335
DTSTART:20150612T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/613317-quantum-confin
 ed-metal-oxide-devices-aqueous-design-electronic-structure-applications
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Quantum-confined Metal Oxide Devices: Aqueous Design\, Electronic S
 tructure & Applications
DESCRIPTION:Lionel Vayssieres\, International Research Center for Renewabl
 e Energy\, Xi’an Jiaotong University\, Xian 710049\, PR China 
\nThe de
 mand of novel functional materials has become the major challenge scientis
 ts face to answer crucial contemporary issues such as alternative energy s
 ources. For instance\, one of the promising alternatives for the transitio
 n of energy resource from its fossil fuel-based beginning to a clean and r
 enewable technology relies on the widespread implementation of solar-relat
 ed energy systems\, however the high cost of energy production and low-ene
 rgy of currently used material combinations pose an intrinsic limitation. 
 In this context\, revolutionary materials development is required to achie
 ve the necessary dramatic increases in power generation and conversion eff
 iciency. The necessity of materials development which is not limited to ma
 terials that can achieve their theoretical limits\, but makes it possible 
 to raise theoretical limits by changing the fundamental underlying physics
  and chemistry is crucial. Low cost purpose-built\, functional materials w
 ith optimized geometry\, orientation\, and aspect ratio combined with inex
 pensive large scale manufacturing methods will play a decisive role in the
  success of materials for renewable energy. However\, fabricating and manu
 facturing large area of such functional materials is a daunting challenge.
  Novel smarter and cheaper fabrication techniques and\, just as important\
 , better fundamental knowledge and comprehensive understanding of material
 s and their syntheses as well as their properties using nanoscale phenomen
 a such as quantum confinements to create multi-functional structures and d
 evices is the key to success. R&D exploiting Nanoscience and Nanotechnolog
 y has the greatest potential to reach such challenging goals. 
\nSuch ide
 as will be demonstrated by the thermodynamic modeling\, low-cost aqueous d
 esign and fabrication of highly oriented crystalline arrays of metal oxide
  quantum dots and rods-based structures and devices with controlled orient
 ation\, size and shape onto various substrates designed at nano-\, meso-\,
  and micro-scale by aqueous chemical growth at low-temperature. In additio
 n\, the in-depth characterization of their electronic structure and quantu
 m confinement performed at synchrotron radiation facilities and their appl
 ications for solar hydrogen generation\, photovoltaics\, magnetic and gas 
 sensor devices will be presented.
\nSite web du groupe du Pr Vayssieres
\
 nCette conférence est présentée par le RQMP Versant Nord du Départeme
 nt de physique de l'Université de Montréal et le Département de géni
 e physique de Polytechnique Montréal.
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