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SUMMARY:Plastic Solar Cells: Current Progress and Challenges
DTSTART:20170519T141500
DTSTAMP:20260408T015943Z
UID:499d885b9fa0f1b2087461afad2ac3a3e0d021142227e7eca310acd1
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Thuc-Quyen Nguyen\nCenter for Polymers and Organic Solid
 s\, Department of Chemistry & Biochemistry\, University of California Sant
 a Barbara\, USA\nBio: Thuc-Quyen Nguyen is Full Professor in the Center fo
 r Polymers and Organic Solids (CPOS) and Chemistry & Biochemistry Departme
 nt at University of California\, Santa Barbara (UCSB). Professor Nguyen re
 ceived her B.S.\, M.S.\, and Ph.D. degrees in Physical Chemistry from the 
 University of California\, Los Angeles\, in 1997\, 1998\, and 2001\, respe
 ctively. Her thesis research focused on processing and photophysics of con
 ducting polymers using ultrafast spectroscopy under the supervision of Pro
 fessor Benjamin Schwartz. She was a research associate in the Department o
 f Chemistry and the Nanocenter at Columbia University working with Profess
 ors Louis Brus and Colin Nuckolls on molecular self-assembly\, nanoscale c
 haracterization and devices. She also spent time at IBM Research Center at
  T. J. Watson (Yorktown Heights\, NY) working with Richard Martel and Phae
 don Avouris on molecular electronics. She joined the faculty of the Chemis
 try and Biochemistry Department at UCSB in July 2004.\n\nShe is co-author 
 of 190 publications that received over 13\,800 citations and has the h-ind
 ex of 60. She is a Scientific Editor of the Materials Horizons and a membe
 r of the Editorial Board of ACS Energy Letters\, ChemPlusChem\, and Journa
 l of Advanced Materials and Devices. Recognition for her research includes
  the 2005 Office of Naval Research Young Investigator Award\, the 2006 NSF
  CAREER Award\, the 2007 Harold Plous Award\, the 2008 Camille Dreyfus Tea
 cher Scholar Award\, the 2009 Alfred Sloan Research Fellows\, the 2010 Nat
 ional Science Foundation American Competitiveness and Innovation Fellows\,
  the 2015 Alexander von Humboldt Senior Research Award\, the 2015 and 2016
  World’s Most Influential Scientific Minds\; Top 1% Highly Cited Researc
 hers in Materials Science by Thomson Reuters\, and the 2016 Fellow of the 
 Royal Society of Chemistry. Her current research interests are electronic 
 properties of conjugated polyelectrolytes\, interfaces in optoelectronic d
 evices\, charge transport in organic semiconductors and biofilms\, charact
 erization of organic solar cells\, ratchets\, and transistors\, and device
  physics.\nOrganic solar cells potentially can offer low cost\, large area
 \, flexible\, light-weight\, clean\, and quiet alternative energy sources 
 for indoor and outdoor applications.\n\nIn this talk\, I will give an over
 view of the current progress and challenges in organic solar cells. Then\,
  I will discuss recent progress at UCSB on the development of molecular do
 nor materials for application in solution processed bulk heterojunction so
 lar cells. Molecular donors offer potential advantages over conjugated pol
 ymer systems in terms of their ease of synthesis and purification\; making
  them more affordable to produce on large scales. Additionally\, small mol
 ecules do not suffer from molecular weight dependence and polydispersity\,
  and thus large batch-to-batch variation as their polymer counterparts. Th
 e molecular design is based on donor/acceptor/donor or acceptor/donor/acce
 ptor using common building blocks such as oligothiophenes\, dithieno silol
 e (DTS)\, pyridal thiadiazole (PT)\, diketopyrrolopyrrole (DPP)\, etc. Che
 mical structure and processing conditions be used to tune the energy level
 \, bandgap\, solubility\, molecular packing\, film morphology\, exciton di
 ffusion\, charge mobility\, charge recombination\, and therefore\, the dev
 ice performance.\n\nA series of compounds has been synthesized to establis
 h structure-function-property relationships. A combination of techniques i
 s employed to characterize material properties including steady-state and 
 time-resolved spectroscopy\, atomic force microscopy (AFM)\, photoconducti
 ve AFM\, TEM\, XRD\, UPS\, and GIWAXS. The results from these studies prov
 ide design guidelines for new generation of molecular-based materials for 
 applications in organic solar cells.
LOCATION:MXG110 http://plan.epfl.ch/?lang=fr&room=mxg110
STATUS:CONFIRMED
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