Determination of Electrical and Photoelectrical Properties of Schottky Diodes Made Using New Chitin Derivatives Synthesi
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ORIGINAL PAPER
Determination of Electrical and Photoelectrical Properties of Schottky Diodes Made Using New Chitin Derivatives Synthesized as Interface Layer İlhan Uzun 1
&
İkram Orak 2 & Hatice Karaer Yağmur 3 & Mehmet Karakaplan 3 & Murat Yalman 4
Received: 27 August 2020 / Accepted: 12 October 2020 # Springer Nature B.V. 2020
Abstract 5-(2,4-dichlorophenyl)-2-furoic acid and anthraquinone-2-carboxylic acid were reacted separately with chitin. The synthesized products were characterized by various spectroscopic methods (FTIR, NMR and XRD) and were abbreviated as C524D2FA and CA2CA, respectively. The surface of the chitin derivatives, pulverized by pounding in mortar, was examined by SEM technique. Then, two different diodes were made by using these chitin derivatives as an interface layer. Al as metal and p-Si as semiconductor were used in the construction of the diodes. Some important properties of these diodes made were determined both in the dark and under an illumination of 100 mW/cm2. The Al/CA2CA/p-Si diode has been found to be more ideal than the Al/C524D2FA/p-Si diode conducted in this study and many other diodes made using Al and p-Si in other studies up to now. Keywords Chitin . Carboxylic acid . Synthesis . Characterization . Schottky diode . Electrical and photoelectrical properties
1 Introduction As is known, a diode is a circuit element that conducts current in only one direction, and diodes are widely used in rectifier circuits, clipping circuits, clamping circuits, logic gates, voltage multiplier circuits, reverse current protection, voltage spike suppression, and solar panels. Also, as it is known, there are many diode types, and one of these diode types is Schottky diode [1]. A conventional Schottky diode consists of a metal and a semiconductor [2–12]. However, at the present
* İlhan Uzun [email protected] 1
Department of Chemistry, Faculty of Education, Dicle University, 21280 Diyarbakir, Turkey
2
Vocational School of Health Services, Bingol University, 12000 Bingol, Turkey
3
Department of Chemistry, Faculty of Science, Dicle University, 21280 Diyarbakir, Turkey
4
Department of Computer and Instructional Technologies Education, Faculty of Education, Dicle University, 21280 Diyarbakir, Turkey
time, Schottky diodes are also made using an insulator, organic, organometallic or polymeric substance as interface layer, apart from a metal and a semiconductor. To date, many insulator and organic, organometallic, and polymeric substances were used in making Schottky diodes [1, 13–32]. Very important results were obtained regarding Schottky diodes made in some studies [3, 12, 14, 27, 31]. As with almost everything, it is important that the substances and materials used in Schottky diode construction are also cheap, environmentally friendly and of course give good results. Chitin is the most abundant natural biopolymer on earth after cellulose and is therefore quite inexpensive. Chitin is the main component of the exoskeleton of crustaceans, such as crabs, shrimp, and insects. It is furtherm
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