Role of geminate polaron-pair recombination on magnetoconductance in P3HT and PC71BM bulk-heterojunction organic solar cells

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 54
  • Download : 0
The mechanism of magnetoconductance (MC) in organic solar cells based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) remains unclear. Recombination of polaron pairs in the P3HT:PCBM organic solar cell is important in view of MC as well as charge transportation. To examine whether the polaron-pair model explains the mechanism of MC in the P3HT:PCBM system, we used an equivalent circuit model in which the internal shunt resistance represents the polaron-pair recombination. The almost identical dependence of the MC and the magnetic field effect on the internal shunt resistance for the P3HT:PCBM solar cells with various polaron-pair recombination rates clearly shows that the MC is ascribed to the polaron-pair recombination. Furthermore, the fact that the MC is virtually unaffected by light intensity below 100 mW/cm(2) confirms that the polaron pairs responsible for the MC are geminate. The circuit model provides a useful instrument for probing the polaron-pair recombination in the system where excitons are effectively quenched.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2018-12
Language
English
Article Type
Article
Citation

ORGANIC ELECTRONICS, v.63, pp.384 - 391

ISSN
1566-1199
DOI
10.1016/j.orgel.2018.08.005
URI
http://hdl.handle.net/10203/247117
Appears in Collection
PH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0