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Experimental and computational investigations of the photosensitive Schottky barrier diode property of an azobenzene based small organic molecule

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Abstract

Azo based organic semiconductor molecules are mostly used as write once, read-many-times (WORM) memory systems. Therefore, a large scope still remains in the fabrication of photoconducting azo compounds, which can be used under acute conditions for advanced applications. In this context we have designed a very simple, small azo based organic molecule, viz. [1,4-phenylenebis(azanylylidene)bis(methanylylidene)bis(2-methoxy-4-(phenyldiazenyl)phenol)] (compound 1). The device fabricated using compound 1 showed Schottky barrier behavior. The value of the rectification ratio is 6.22 and 18.27 under dark and photoirradiated conditions, respectively. Thermally stable and low cost compound 1 can be used in the area of optoelectronic devices probably being the first azo-organic material showing such properties. Experimentally measured optical conductivity is again correlated theoretically using DFT computation. It has been observed that the change in the dihedral angle produces a decrease in the energy for the allowed electronic transition.

Graphical abstract: Experimental and computational investigations of the photosensitive Schottky barrier diode property of an azobenzene based small organic molecule

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Publication details

The article was received on 04 May 2018, accepted on 03 Jul 2018 and first published on 04 Jul 2018


Article type: Paper
DOI: 10.1039/C8NJ02193G
Citation: New J. Chem., 2018, Advance Article
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    Experimental and computational investigations of the photosensitive Schottky barrier diode property of an azobenzene based small organic molecule

    S. Banerjee, A. Dey, P. Ghorai, P. Brandão, J. Ortega-Castro, A. Frontera, P. P. Ray and A. Saha, New J. Chem., 2018, Advance Article , DOI: 10.1039/C8NJ02193G

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