Journal
CHEMICAL PHYSICS LETTERS
Volume 572, Issue -, Pages 150-153Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2013.04.030
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Funding
- Japanese Society for the Promotion of Science (JSPS) [22226007]
- Grants-in-Aid for Scientific Research [22226007, 25709022] Funding Source: KAKEN
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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)/C-60/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/C-60 (C-60/pentacene) interface is responsible for the hysteresis loop observed in the C-V characteristics. (C) 2013 Elsevier B.V. All rights reserved.
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