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SUMMARY:ORGANIC AND HYBRID SOLAR CELLS -from structural to functional cont
 rol using novel material and device concepts - - Prof. Thelakkat\, Applied
  Functional Polymers and Lab for Solar Energy Research\, University of Bay
 reuth
DTSTART:20080422T133000Z
DTEND:20080422T141500Z
UID:TALK11637@talks.cam.ac.uk
CONTACT:Jan Anton Koster
DESCRIPTION:One of the challenging aspects in designing and developing nov
 el functional materials is to incorporate the desired optical and electric
 al properties maintaining their film-forming and thermal characteristics w
 hich make them suitable for thin film device applications. An important cr
 iterion for most of the applications in the field of energy research such 
 as photovoltaics\, batteries\, fuel cells etc. is that these materials sho
 uld have well-defined nanostructured morphology in thin films in order to 
 be capable of fulfilling the complex functions of charge carrier/ ion tran
 sport in confined channels/geometries without adversely affecting the othe
 r complimentary functions. This morphological control on a nanoscopic leve
 l controls the interface between the functional domains as well as the lon
 g term stability of such devices. We have demonstrated the chain of contro
 l on all length scales -from molecular to mesoscopic to macroscopic- using
  the self-assembly principle of a fully functionalised block polymer for p
 hotovoltaic applications as represented in fig 11-4.\n\nThis contribution 
 covers the synthesis of some novel semiconductor block copolymers carrying
  poly(3-hexylthiophene) segments and others which allow the incorporation 
 of semiconductor quantum dots or nanocrystals (e.g. CdSeTe) to get organic
  as well as hybrid systems for solar cell applications. The characterisati
 on of these materials in thin films and their application in devices will 
 be presented.\nIn the field of solid-state dye sensitized solar cells\, we
  have developed a series of high extinction donor antenna dyes capable of 
 retarding recombination via a secondary electron donation from the donor a
 ntenna group to the dye centre. The chemistry and application of these dye
 s in solar cells will also be presented5\,6.\nReferences:\n1. S. M. Lindne
 r\, M. Thelakkat\, Macromolecules 37\, 8832 (2004).\n2. S. M. Lindner\, S.
  Hüttner\, A. Chiche\, M. Thelakkat\, G. Krausch Angew. Chem. Int. Ed 45\
 , 3364 (2006).\n3. S. M. Lindner\, N. Kaufmann\, M. Thelakkat Organic Elec
 tronics 8\, 69-75 (2007).\n4. M. Sommer\, S.M. Lindner\, M. Thelakkat\, Ad
 v. Fun. Mat. 17\, 1493-1500 (2007).\n5. C. S. Karthikeyan\, M. Thelakkat\,
  Inorganica Chimica Acta 361 635–655 (2008).\n6. C. S. Karthikeyan\, H. 
 Wietasch\, M. Thelakkat\, Adv. Mater. 19\, 1091-1095 (2007).
LOCATION:Small Lecture Theatre\, Cavendish Laboratory\, Department of Phys
 ics
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