Capacitance measurement in organic thin-film device with internal charge separation zone

Masaya Terai, Katsuhiko Fujita, Tetsuo Tsutsui

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


To verify the concept of electric-field-assisted bipolar charge spouting in organic thin films, model devices with an internal charge separation (ICS) zone were fabricated. A double-insulation-type organic thin-film device, indium-tin-oxide (ITO)/ poly-chloro-p-xylylene (PCPX)/tris(8-quinolinolato)aluminum(III) (Alq3)/Mg-doped Alq 3/V2O 5/N,N′-bis(3-methylphenyl)-1,1′-biphenyl-4, 4′-diamine (TPD)/PCPX/Al (device with an ICS zone), and four devices with similar structures without the ICS zone were fabricated. The capacitance of the devices under positive and negative applied biases was measured. The device with the ICS zone showed a clear capacitance increase when the bias condition met the electric-field-assisted bipolar charge separation.

Original languageEnglish
Pages (from-to)L1059-L1062
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number33-36
Publication statusPublished - Aug 26 2005

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)


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