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y-radiation sensor using optical and electrical properties of manganese phthalocyanine (MnPc) thick film

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Date
2002
Abstract
Manganese phthaloyanine polymer thick films were fabricated using screenprinting techniques. The optical parameters were obtained from the analysis of the absorption spectra over a wavelength range of 385-900nm. The d.c. electrical measurements were carried out in a range of 0-30 volts. The effects of γ-radiation on the optical and the electrical properties were investigated for dosimetry applications. The optical energy band gaps of these films showed a decrease in their values with the increase in the radiation dose. The electronic transition has changed from direct allowed for the as-printed films (unexposed to γ-rays) to indirect allowed for the irradiated samples. Both the as-printed and irradiated Ag/MnPc/Ag devices demonstrated a Schottky conduction mechanism. Both the absorbance and the capacitance of the MnPc thick films displayed a highly consistent linear response to γ-ray exposure.
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Description
peer-reviewed
Publisher
MDPI
Citation
Sensors;2, pp. 174-184
Collections
Electronic & Computer Engineering
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Arshak_2002_sensor.pdf
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Keywords
optical band gap, dosimetry, manganese phthalocyanine, MnPc
ULRR Identifiers
https://hdl.handle.net/10344/4526
 https://doi.org/10.34961/3794
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Funding Information
Sustainable Development Goals
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