Optical and Optoelectronic Studies of Binary and  Ternary Films of Poly(L-Tryptophane),  Poly(5-hydroxy-L-tryptophane), and  P(TER-CO-TRI) Doped with Sudan Dye

Barham K.  Rahim; Peshawa O. Amin; Fahmi F. Muhammadsharif; Salah R. Saeed; Kamal A. Ketuly

doi:10.14500/aro.11103

Barham K. Rahim 1 Department of Medical Physics, Faculty of Medicals and Applied Science, Charmo University, 46023 Chamchamal, Sulaimania, Kurdistan Region - F.R. Iraq https://orcid.org/0009-0002-2137-897X
Peshawa O. Amin Charmo Center for Research, Training and Consultancy, Charmo University, 46023 Chamchamal, Kurdistan Region - F.R Iraq https://orcid.org/0000-0003-0606-4614
Fahmi F. Muhammadsharif Department of Physics, Faculty of Science and Health, Koya University, 44023 Koya, Kurdistan Region - F.R Iraq http://orcid.org/0000-0002-4563-9671
Salah R. Saeed Department of Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Kurdistan Region - F.R. Iraq https://orcid.org/0000-0002-3249-8347
Kamal A. Ketuly Department of Medical Chemistry, College of Medicine, University of Duhok, Duhok,, Kurdistan Region, Iraq https://orcid.org/0000-0003-1556-2914

Keywords: Poly(L-Tryptophane), Poly(5-hydroxy-L-tryptophane), P(TER-CO-TRI), Sudan dye, Energy band gap, Refractive index, Dielectric constant

Abstract

In this work, the optical properties and optoelectronics parameters of binary and ternary composite films made of two electron acceptors, poly(L-Tryptophane) and poly(5-hydroxy-L-Tryptophane), with an electron donor, P(TER-CO-TRI), doped with Sudan dyes, are comprehensively investigated. The films with different volumetric ratios of the components were deposited onto the glass substrates using spin coating technique. Results showed that with the help of dye doping into the binary systems of poly(L-Tryptophane):P(TRI-co-TER) (1:2) and poly(5-hydroxy-L-Tryptophane):P(TRI-co-TER)(1:2), the refractive index was increased from 2.01 to 2.32. The nature of the electronic transition in the studied films was found to be a direct allowed transition, which was derived from Tauc’s equation. The combination of Cyclic voltammetry (CV) technique and absorption spectroscopy was used to determine the molecular energy levels, HOMO and LUMO of the polymer samples. It was seen that the mixture of poly(L-Tryptophane):P(TRI-co-TER):Sudan dye (1:2:2) has led to increase the energy gap to 2.95 eV and the real optical conductivity ( ) to about 433.11 S.cm^-1. According to the findings, the investigated polymers can have a great potential for semitransparent organic solar cells.

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Author Biographies

Barham K. Rahim, 1 Department of Medical Physics, Faculty of Medicals and Applied Science, Charmo University, 46023 Chamchamal, Sulaimania, Kurdistan Region - F.R. Iraq

Barham K. Rahim is a Master Student at the Department of Medical Physics, College of Medical and Applied Sciences, Charmo University. He got the B.Sc. degree in Physics at Sulaimani University (2012). His research interests are in organic materials, organic optoelectronic devices, and Photovoltaic applications.

Peshawa O. Amin, Charmo Center for Research, Training and Consultancy, Charmo University, 46023 Chamchamal, Kurdistan Region - F.R Iraq

Peshawa O. Amin is an Assistant Lecturer at the Department of Physics, College of Science, Charmo University. he got the B.Sc. degree in Physics, the M.Sc. degree in Material Science and the Ph.D. degree in Organic Electronics. His research interests are in nano materials, optoelectronic devices and Organic electronics.

Fahmi F. Muhammadsharif, Department of Physics, Faculty of Science and Health, Koya University, 44023 Koya, Kurdistan Region - F.R Iraq

Fahmi F. Muhammadsharif is an Assistant Professor at the Department of Physics, Faculty of Science and Health, Koya University. He got the B.Sc. degree in Physics, the M.Sc. degree in Physics and the Ph.D. degree in Solar Energy from the University of Sulaimani, University of Mosul and Universiti Malaya, respectively. His research interests are in Solar Energy, Solar Cells, and Metamaterials. Dr. Fahmi is a professional member of the International Solar Energy Society, and International Association of Advanced Materials

Salah R. Saeed , Department of Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Kurdistan Region - F.R. Iraq

Salah R. Saeed is a Professor at the Department of Physics, College of Science, Sulaimani University, KRG /IRAQ. He got BSc degree in Physics, M.Sc. degree in Semiconductor Physics from Salahaddin University and Ph.D. degree in Nanostructure and Nanotechnology from Salahaddin University - Iraq, and Jagilonian University - Poland, respectively. He is interested in nanoscale structure properties, solar cells, metamaterials, optical and electrical properties of polymer nanocomposites.

Kamal A. Ketuly, Department of Medical Chemistry, College of Medicine, University of Duhok, Duhok,, Kurdistan Region, Iraq

Kamal A. Ketuly is a Professor in Medical Chemistry, Faculty of Medicine, University of Dohuk. He got the B.Sc. degree in Chemistry at the University of Baghdad in 1976. He came to Glasgow University in 1976 to study as a private student and obtained M.Appl.Sc. in 1978 and Ph.D in Chemistry in 1982. He worked at Glasgow University as a Postdoctoral Research Fellow until 1991.

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