Volume 2, Issue 6, December 2014, Page: 69-74
Electrical and Photoelectrical Properties of Copper (II) Complex/n-Si/Au Heterojunction Diode
Cihat Ozaydin, Department of Physics, Faculty of Science and Art, University of Batman, Batman, Turkey
Kemal Akkilic, Department of Physics, Faculty of Education, University of Dicle, 21280 Diyarbakır, Turkey
Received: Aug. 28, 2014;       Accepted: Oct. 6, 2014;       Published: Jan. 15, 2015
DOI: 10.11648/j.ajop.20140206.11      View  4448      Downloads  210
Abstract
In this study, we fabricated copper(II) complex/n-Si/Au organic-inorganic heterojunction diode by forming copper(II) complex thin film on n-type silicon. A direct optical band gap energy values of the copper(II) complex (Cu2C34H34N2O21Cl4) thin film on a glass substrate was obtained as Eg=2.98 eV. The current-voltage (I-V) measurement of the diode was carried out at room temperature and under dark. The ideality factor n and barrier height ϕb values of the diode were found to be 3.17 and 0.71 eV, respectively. The diode indicates non-ideal current-voltage characteristics due to the high ideality factor greater than unity. The series resistance Rs and ideality factor n values were determined using Cheung’s method and obtained as 5.54 kΩ and 3.81, respectively. The capacitance-voltage (C-V) measurements of the diode were performed at different frequency and room temperature. From the analysis of the C-V measurements carrier concentration Nd, diffusion potential Vd and barrier height values ϕbc-v were determined as 2.79x1015 cm-3, 1.078 V, 1.31 eV, respectively. From the I-V measurements of the diode under 1.5 AM illumination, short circuit current (Isc) and open circuit voltage (Voc) have been extracted as 12.8 µA and 153 mV, respectively.
Keywords
Organic-İnorganic, Heterojunction, Schottky Contact, Photovoltaic Properties
To cite this article
Cihat Ozaydin, Kemal Akkilic, Electrical and Photoelectrical Properties of Copper (II) Complex/n-Si/Au Heterojunction Diode, American Journal of Optics and Photonics. Vol. 2, No. 6, 2014, pp. 69-74. doi: 10.11648/j.ajop.20140206.11
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