Self-organization of polymer chains in efficient polymer solar cells

Yan Yao, Gang Li, Hoichang Yang, Yang Yang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Polymer based solar cells have tremendous application in harnessing solar energy in a cost-effective way. Here we studied the polymer chains self-organization effect in regioregular poly(3-hexylthiophene) (RR-P3HT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) solar cells in an evolutional way, with the difference being spin-coating time ts (20 to 80 sec) which controls solvent annealing time (ta) by the solvent residue. Ultraviolet-visible (UV-vis) absorption spectroscopy, scanning atomic force microscopy (AFM),transmission electron microscopy (TEM), and grazing-incidence X-ray diffraction (GIXD) were conducted on these blend films and linked to the device performance. We found the trade-off between a) efficient charge separation and b) absorption plus charge transport for maximizing the efficiency of polymer solar cells, the benefits of the latter clearly dominate in the P3HT:PCBM system.

Original languageEnglish
Title of host publicationAmerican Chemical Society - 235th National Meeting, Abstracts of Scientific Papers
Publication statusPublished - 6 Apr 2008
Externally publishedYes
Event235th National Meeting of the American Chemical Society, ACS 2008 - New Orleans, LA, United States
Duration: 6 Apr 200810 Apr 2008

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Conference

Conference235th National Meeting of the American Chemical Society, ACS 2008
CountryUnited States
CityNew Orleans, LA
Period6/04/0810/04/08

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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