Analyzing hysteresis behavior of capacitance-voltage characteristics of IZO/Cā‚†ā‚€/pentacene/Au diodes with a hole-transport electron-blocking polyterpenol layer by electric-field-induced optical second-harmonic generation measurement

Journal Publication ResearchOnline@JCU
Taguchi, Dai;Manaka, Takaaki;Iwamoto, Mitsumasa;Bazaka, Kateryna;Jacob, Mohan V.
Mohan Jacob
Abstract

By using electric-field-induced optical second-harmonic generation (EFISHG) measurement, we analyzed hysteresis behavior of capacitance-voltage (C-V) characteristics of IZO/polyterpenol (PT)/C₆₀/pentacene/Au diodes, where PT layer is actively working as a hole-transport electron-blocking layer. The EFISHG measurement verified the presence of interface accumulated charges in the diodes, and showed that a space charge electric field from accumulated excess electrons (holes) that remain at the PT/C₆₀ (C₆₀/pentacene) interface is responsible for the hysteresis loop observed in the C-V characteristics.

Journal

Chemical Physics Letters

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572

ISBN/ISSN

1873-4448

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Pages Count

4

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Publisher

Elsevier

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N/A

DOI

10.1016/j.cplett.2013.04.030