BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Illuminating the Semiconductor-Electrolyte Interface
DTSTART:20160916T160000
DTSTAMP:20260406T205922Z
UID:39a8c1472d2d6cc612c17bf590c97555fa45c3b5d28948ab5a7d3633
CATEGORIES:Conferences - Seminars
DESCRIPTION:Hans Joachim Lewerenz\, Division of Engineering and Applied Sc
 iences\, Joint Center for Artificial Photosynthesis\, California Institute
  of Technology\, Pasadena\, CA\, USA\nEnergetics\, Surface Transformation 
 and Water Splitting\n\nThe main concepts describing semiconductor-electrol
 yte junctions and the related semiconductor basics are reviewed. Gerischer
 ’s model of this contact is compared to photoelectron spectroscopy (PES)
  data obtained with TiO2 on fully immersed semiconductor electrodes. It is
  shown that all major semiconductor surface conditions are observed and id
 entified in-situ by tender X-ray PES. Light-induced water splitting is int
 roduced covering single junction and dual tandem junction approaches with 
 integrated electrocatalysts.\n\nCombining photoelectrochemical surface tre
 atments and surface/interface analysis\, a photovoltaic tandem structure t
 hat exhibits record efficiency and increased stability has been realized. 
 The latter results from an interfacial protection layer formed by surface 
 transformation of the tandem structure window layer into an oxide. The mea
 sured efficiency is contextualized with regard to the theoretical achievab
 le limiting efficiency for light-induced water splitting. This approach co
 mbines the detailed balance of Shockley and Queisser\, applied in photovol
 taics\, with electrocatalysis parameters. A commentary on the perspectives
  of carrier-free excitation energy transfer for photoelectrocatalysis is p
 resented for discussion.
LOCATION:Sion https://www.google.com/maps/place/EPFL+Valais+Wallis/@46.226
 761\,7.361304\,16z/data=!4m5!3m4!1s0x0:0x80904015df112dcb!8m2!3d46.2267611
 !4d7.3613039?hl=en-US
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR