Characterization of synthesized new chitin derivatives and Schottky diodes made using these derivatives
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Characterization of synthesized new chitin derivatives and Schottky diodes made using these derivatives ˙Ilhan Uzun1,* , ˙Ikram Orak2, Mehmet Karakaplan3, Hatice Karaer Yag˘mur3, S¸ erife Pınar Yalc¸ın4, and Kemal Akkılıc¸5 1
Department of Chemistry, Faculty of Education, Dicle University, 21280 Diyarbakir, Turkey Vocational School of Health Services, Bingol University, 12000 Bingol, Turkey 3 Department of Chemistry, Faculty of Sciences, Dicle University, 21280 Diyarbakir, Turkey 4 Department of Physics, Faculty of Arts and Sciences, Harran University, 63300 Sanliurfa, Turkey 5 Department of Physics, Faculty of Education, Dicle University, 21280 Diyarbakir, Turkey 2
Received: 24 June 2020
ABSTRACT
Accepted: 20 September 2020
In this study, two new chitin derivatives were firstly synthesized. The products formed as a result of the reactions between chitin with 4-bromo-1,8-naphthalic anhydride and 4,40 -oxydiphthalic anhydride were abbreviated as C4B18NA and C440 OA, respectively. The structures of the chitin derivatives were illuminated by various spectroscopic methods (FTIR, NMR, and XRD), and it was thus confirmed that they were synthesized. The surface structures of the chitin derivatives were investigated by SEM technique. Then, two separate diodes were made using aluminum as metal, the chitin derivatives as interfacial layer, and p-Si as semiconductor. Some important properties of the diodes made were determined both in the dark and under an illumination of 100 mW/cm2. It was seen that the diodes are more ideal than most of the diodes where aluminum and p-type silicon were used as metal and semiconductor in their structures, respectively.
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction As is known, a diode is a circuit element which conducts current in only one direction. Also, it is known that there are many types of diodes, and one of these diodes is Schottky diode. Although only a semiconductor and a metal were used in the construction of classical Schottky diodes [1–3], both natural and synthesized organic and polymeric substances in addition to these substances were also used
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https://doi.org/10.1007/s10854-020-04530-0
in the construction of the recently made Schottky diodes [4–13]. This field, which we can call organic electronics, has been developing rapidly. Organometallic compounds and insulating materials were also used in the construction of Schottky diodes [14–18]. Of course, it is important for a diode being ideal, cheap, and made of substances which are friend to environment. It was determined that the diodes made in some of the studies referenced above are quite close to an ideal diode.
J Mater Sci: Mater Electron
Chitin and its major derivative, chitosan, were widely used in many areas and systems (agriculture [19–22], artificial skin [23–25], chromatographic separation [26, 27], cosmetics [23, 28], drug delivery system [29–33], food processing [34–37], gene therapy [38–40], ophthalmology [41, 4
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