Electrical Properties of Azo-Ferrocene as Organic Diode

Abstract:

Ferrocene is a well-known electron donor due to its chemical stability and redox behaviour. By introducing azo dye as an acceptor in the system, the characteristics of azo-ferrocene (AF) compound as a semiconductor material have been investigated. A single layer film of AF compound was deposited on an indium tin oxide (ITO) glass substrate by electrochemical method in the potential range of 0.4 V to 0.8 V. Electrical conductivity of the thin film was investigated using a four-point probe and I-V characteristic of the diode was determined via a two-point probe method. AF material showed an average electrical conductivity of 0.246 ± 0.003 Scm^-1. The forward current-voltage measurement demonstrated a bias voltage in the range of 0.87 V to 10.0 V, and the backward current-voltage measurement indicated a bias voltage in the range of-0.87 V to-7.0 V. In both forward and backward voltages, the current showed a slow increase beyond the readings of 10.0 V to-7.0 V.

• Periodical: Advanced Materials Research (Volume 895)
• Pages: 505-508
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.895.505
• Online since: February 2014
• Authors: Siti Athirah Mohamad Jamali, Hasiah Salleh, Tei Tagg
• Keywords: AZO, Electrical Conductivity, Electrochemistry Method, Ferrocene, Organic Diode

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