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SUMMARY:Solar energy conversion with nanoheterostructures
DTSTART:20130926T163000
DTEND:20130926T173000
DTSTAMP:20260408T120101Z
UID:f137ced488a54f8f93f0b3d4d4ac5cfba3d202fa3daa38be102f9f5a
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Juan Bisquert\nProfessor of Applied Physics\nPhotovoltai
 cs and Optoelectronic Devices Group\,\nDepartament de Física\,\nUniversit
 at Jaume I\, 12071 Castelló\, Spain\nResearch in solar energy conversion 
 employing nanoheterostructures covers a wide variety of material systems: 
 dye sensitized solar cells\, organic solar cells\, quantum dot solar cells
 \, solar fuel devices. We discuss the basic structure of solar energy conv
 erters\, consisting on an absorber material with selective contacts that a
 lso perform specific charge transfer or catalytic reaction in order to con
 vert carriers to electricity or fuel. The ideas of Fermi level splitting\,
  high quantum efficiency\, and fundamental physical efficiencies are revie
 wed. Then we address the mechanisms of the mentioned system\, showing gene
 ral features as well as specific properties that have been discovered usin
 g impedance spectroscopy methods and related techniques. Experimental info
 rmation is derived from recombination resistance and capacitance of the ce
 lls\, which provides key insights about the separation of energetic effect
 s\, and kinetics of recombination. In solution processed materials there i
 s a strong convolution of the disorder in the energy axis with the charge 
 transfer probability. Finally we discuss some recently discovered mechanis
 m of quantum dot layer solar cells and perovskite solar cells.
LOCATION:CH G1 495 https://plan.epfl.ch/?room==CH%20G1%20495
STATUS:CONFIRMED
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