Optical band gap and electrical conductivity of doped conducting polypyrrole
College
Gokongwei College of Engineering
Department/Unit
Electronics And Communications Engg
Document Type
Conference Proceeding
Source Title
2019 IEEE 11th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management, HNICEM 2019
Publication Date
11-1-2019
Abstract
Conducting polypyrrole thin films, doped with sodium-p-toluenesulfonate (Na-pTS) and potassium-hydroquinone monosulfate (K-HQS), were prepared by electrochemical oxidation of pyrrole on indium-tin-oxide/glass substrates. The optical band gaps of the doped polymer materials were determined from their UV-Vis absorption spectra. For polypyrrole doped with Na-pTS, increasing the doping level, from 0.10 M to 0.12 M Na-pTs decreases the optical band gap from 2.05 eV to 1.98 eV. Also, doping polypyrrole with K-HQS was found to produce lower optical band gap, i.e. 1.86 eV for 0.10 M K-HQS dopant molarity. The electrical conductivity of the Na-pTS-doped polypyrrole films, measured using van der Pauw technique, were found to increase with higher doping level; conductivity values range from 105 to 151 Ω-1cm-1. © 2019 IEEE.
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Digitial Object Identifier (DOI)
10.1109/HNICEM48295.2019.9072769
Recommended Citation
Lanuza, C., Manzano, M., Manzano, E. M., Alcantara, N. T., Llanes, A., & Lin Ong, H. (2019). Optical band gap and electrical conductivity of doped conducting polypyrrole. 2019 IEEE 11th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management, HNICEM 2019 https://doi.org/10.1109/HNICEM48295.2019.9072769
Disciplines
Electrical and Electronics
Keywords
Conducting polymers; Electric conductivity; Ultraviolet-visible action spectroscopy; Energy gap (Physics)
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