Going from green to white color electroluminescence through a nanoscale complex of Zinc (II) |
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| Affiliation: | 1. School of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410004, PR China;2. Hunan Provincial Engineering Research Center of Electric Transportation and Smart Distribution Network, Changsha University of Science and Technology, Changsha 410114, PR China;3. School of Metallurgy and Environment, Central South University, Changsha 410083, PR China;1. Centre of Excellence for Green Energy and Sensor Systems, Indian Institute of Engineering Science & Technology, Shibpur, Howrah-711103, India;2. National Institute of Solar Energy, Gwalpahari, Gurgaon 122003, Haryana, India;1. Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Department of Physics, Abbottabad University of Science & Technology, Havelian, Khyber Pakhtunkhwa, Pakistan;3. Nanotechnology & Catalysis Research Centre (NANOCAT), Institute of Postgraduate Studies, University of Malaya, 50603 Kuala Lumpur, Malaysia;4. Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;5. Interdisciplinary Research Centre in Biomedical Materials (IRCBM) COMSATS Institute of Information Technology, 54000 Lahore, Pakistan;6. Department of Geology, Faculty of Science University of Malaya, 50603 Kuala Lumpur, Malaysia;7. Centre of Research in Ionic Liquid, Department of Chemical Engineering Universit Teknologi PETRONAS, 31750 Tronoh, Malaysia;1. Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huai’an 223003, People''s Republic of China;2. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, People''s Republic of China;3. Jiangsu Provincial Key Laboratory of Palygorskite Science and Applied Technology, Huaiyin Institute of Technology, Huai’an 223003, People''s Republic of China |
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| Abstract: | In this paper, we report application of four novel Nano Zinc (II) complexes as the emitter dyes in organic light emitting diodes (OLEDs). The Nano Zinc (II) complexes emission, particularly its absorption, fluorescence spectra and quantum yield, tuned by varying sizes which affects environments of the Zinc (II) ion. OLED Devices with Nano Zinc (II) complexes were fabricated, giving rise to devices with peak emission ranging from 498 to 541 nm. Here, we have successfully employed sonoelectrochemical method for fabricating white OLEDs. The white emission ascribed to the exciton emission in Nano Zinc (II) complex emitter and from exciplex formation at the interface of PVK/Nano Zinc (II) complex. The experimental results demonstrate that this approach is ideal for color tuning of single and multilayer conducting semiconducting thin films used in the fabrication of organic electronic devices such as OLEDs. |
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| Keywords: | White OLED Nano Zinc (II) complexes Photoluminescence Sonoelectrochemical Exciplex formation Quantum yield |
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