Facile chemical bath deposition method for interconnected nanofibrous polythiophene thin films and their use for highly efficient room temperature NO2 sensor application
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Date
2017
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier B.V.
Abstract
Interconnected nanofibrous polythiophene (INPTh) film was deposited on the glass substrate through a simple chemical bath deposition method. The influence of monomer concentration on INPTh film properties as well as on NO2sensing properties of the film was studied. The morphological and structural studies were carried out using FTIR spectroscopy, FE-SEM microscope, and AFM analysis. The FTIR spectra confirmed the formation of PTH structure. The interconnected nanofibrous surface morphology was observed in FE-SEM images. The roughness of the film and thickness (225?nm?442?nm) was found to increase with monomer concentration up to 0.5?M, after that, both decreased at 0.6?M monomer concentration. The highest selectivity of PTh thin film towards NO2was observed than the other gases like H2S, SO2, NH3, CO and LPG. The influence of film morphology and thickness on gas sensing properties was observed, which was varied with monomer concentration. The film deposited at 0.5?M monomer concentration showed the highest NO2gas response of 47.58% at room temperature. Present results revealed that monomer concentration was also one of the deposition parameters for tuning the morphological as well as gas sensing properties of the chemical bath deposited PTh film. ? 2017 Elsevier B.V.
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Keywords
Catalyst selectivity, Chemical detection, Deposition, Fourier transform infrared spectroscopy, Gas detectors, Monomers, Nanofibers, Nitrogen oxides, Polymer films, Polymers, Substrates, Sulfur dioxide, Chemical bath deposition methods, Chemical-bath deposition, Deposition Parameters, Gas sensing properties, Monomer concentration, Polymer thin films, Sensor applications, Structural studies, Thin films
Citation
Kamble, D. B., Sharma, A. K., Yadav, J. B., Patil, V. B., Devan, R. S., Jatratkar, A. A., . . . Pawar, S. D. (2017). Facile chemical bath deposition method for interconnected nanofibrous polythiophene thin films and their use for highly efficient room temperature NO<inf>2</inf>sensor application. Sensors and Actuators, B: Chemical, 244, 522-530. doi: 10.1016/j.snb.2017.01.021