Carrier density and mobility in n-doped poly(P-phenylene vinylene)

Shin Sakiyama, Takuya Komura, Hirotaka Iwashita, Naoki Mizutani, Katsuhiko Fujita

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The conductivity of a polymer semiconductor, poly[2-methoxy-5-(2’-ethylhexyloxy) -p-phenylene vinylene] (MEH-PPV) was drastically improved by n-type doping with LiF. The improvement of the conductivity is mainly caused by the improved carrier mobility. This phenomenon is attributed to trap filling by doping. The carrier generation should take place at a trap level of the semiconductor and the trap level can be filled, resulting in carrier mobility improvement. Furthermore, we fabricated the organic Schottky solar cells with n-doped MEH-PPV. Open circuit voltage (Voc) was significantly increased as the doping concentration increased, indicating that LiF in MEH-PPV can change Fermi level.

Original languageEnglish
Pages (from-to)18-20
Number of pages3
JournalEvergreen
Volume3
Issue number1
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Surfaces, Coatings and Films
  • Management, Monitoring, Policy and Law

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