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Article Type

Original Study

Abstract

This paper has introduced an experimental research case on the impact of nano-doping on electrical and thermal characteristics of organic semiconductor thin-film. The overall goal of the study is to study the effect of controlled addition of nano-dopants on charge transport characteristics and thermal stability that are important criteria in organic electronic device applications. Solution-based deposition was used to produce the thin films at a different concentration of nano-dopant and, systematic electrical and thermal measurements were carried out under controlled laboratory conditions. Electrical characterization showed that there was high improvement of electrical conductivity as the nano-dopant concentration was high, especially at low to moderate doping levels. Both undoped and nano-doped samples had current voltage (IV) characteristics which were linear, indicating stable ohmic conduction. The conductivity enhanced was credited to the addition of new paths of charge transportation and also the decrease in the effect of charge trapping in the organic matrix. Nevertheless, the conductivity enhancement velocity was slower at greater concentrations of dopants, revealing the changeover of saturation conduct which is probably attributed to agglomeration of dopants or augmented structural anarchy. Thermal analysis also indicated that nano-doping is involved in enhanced thermal stability of organic semiconductor thin films. Nano-doped samples experienced an elevation in the onset temperature of thermal degradation compared to the undoped film, which indicates that a nano-doped film is resistant to thermally induced structural alterations. The optimum concentration of nano-dopant was determined at which electrical conductivity and thermal stability were at their highest points. An overall examination of electrical and thermal findings showed that there was a high level of correlation between increased charge transportation and performance in terms of thermal aspects, which underscored the multifunctional advantage of nano-doping. The results of the experiment are in line with literature trends, as well as offering a comprehensive assessment of the two properties in unified conditions. In general, this research establishes that controlled nano-doping is an efficient approach to the optimization of the organic semiconductor material performance and provides meaningful information on designing materials and tools to be utilized on the device level.

Keywords

Organic semiconductors, Nano-doping, Electrical conductivity, Thermal stability, Thin films, Charge transport

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