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Enhancement of nonlinear optical susceptibility of CuPc films by ITO layer
Affiliation:1. Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia;2. Nano-Science & Semiconductor Labs, Metallurgical Lab., Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt;1. Institute of Physics AS CR, Cukrovarnicka 10, 16253 Prague, Czech Republic;2. Charles University, Faculty of Mathematics and Physics, Ke Karlovu 5, 12116 Prague, Czech Republic;3. Institute of Physics, University of Tartu, W. Oswaldi 1, 50411 Tartu, Estonia;1. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People''s Republic of China;2. V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine;1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;2. College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China;3. National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, China;1. Faculty of Electrical Engineering, Czestochowa University Technology, Armii Krajowej 17, Czestochowa, Poland;2. Physics and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;3. The Hakubi Center for Advanced Research, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan;4. Department of Electronic Science and Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan;5. College of Food and Bioengineering, Jimei University, Xiamen 361021, China;6. Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan;7. Research Chair of Exploitation of Renewable Energy Applications in Saudi Arabia, Physics & Astronomy Dept., College of Science, King Saud University, P.0.Box 2455, Riyadh 11451, Saudi Arabia;1. Institut des Matériaux Jean Rouxel (IMN), CNRS, UMR 6502, Université de Nantes, 2 rue de la Houssinière, BP 32229, 44322 Nantes cedex 3, France;2. Laboratoire des nanomatériaux et couches minces, FST, Université Abdelmalek Essaadi de Tétouan, FST de Tanger BP 416 – Tanger, Morocco;3. Université de Nantes, Faculté des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, Nantes F-44000, France;4. Laboratoire de la Matière Condensée et des Energies Renouvelables, Faculté des Sciences et des Techniques, Université Hassan II de Casablanca, B.P 5366 Maarif, Casablanca, Morocco;5. MOLTECH-Anjou, CNRS, UMR 6200, Université de Nantes, 2 rue de la Houssinière, BP 92208, Nantes F-44000, France;1. Otto-Schott-Institut for Materials Research (OSIM), Fraunhoferstr. 6, Jena University, 07743 Jena, Germany;2. Institute for Optics and Quantum Electronics (IOQ), Max Wien Platz 1, Jena University, 07743 Jena, Germany
Abstract:In the present study, the Copper Phthalocyanine (CuPc)/ITO thin film was fabricated using thermal evaporation method. The structural property was analyzed by X-ray diffraction study and confirms that the thin film has been preferentially grown along (200) plane. The atomic force microscope study was carried out on deposited film and quality of thin films is assessed by calculating the roughness of the films. The direct and indirect band gap, linear and nonlinear optical characteristics of grown films were calculated by using UV–Vis–NIR spectrometer studies. The calculated values of the first direct and indirect band gaps (Eg1(d) & Eg1(ind)) are 1.879 and 1.644 eV as a fundamental gap, while the values of second direct and indirect band gap (Eg2(d) & Eg2(ind)) are 1.660 and 1.498 eV as an onset gap for CuPc. The values of nonlinear refractive index (n2) and third order nonlinear optical susceptibility (χ3) are found to be 5 × 10?8 and 8 × 10?9 (theoretical) and 5.2 × 10?8 and 1.56 × 10?7 (experimental) respectively. The optical band and third order nonlinear properties suggest that the as-prepared films are may be applied in optoelectronic and nonlinear applications.
Keywords:CuPc/ITO  Linear optical constants  Linear & non-linear optical constants  Band gap analysis  Dielectric constants  OLED applications
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