The bio-organic thin film transistor (BiOTFT) with the DNA and DNA-surfactant complex as a dielectric layer shows memory function. In order to investigate the effect of surfactant structure on the OTFT memory device performance, different kinds of surfactant were introduced. Cetyltrimethylammonium chloride (CTMA), Lauroylcholine chloride (Lau) or Octadecyltrimethylammonium chloride (OTMA) as the cationic surfactant was mixed with DNA to prepare the DNA complex through the electrostatic interaction. In addition, the different molecular weight DNA also has been studied to analyze the effect of DNA chain length on the performance of the physical property. Many kinds of methods including UV-vis, Circular dichiroism (CD) and I-V characteristic have been applied to analyze the property of DNA complex. In conclusion, all of DNA complex with CTMA, OTMA and Lau were revealed to work as the bio-organic thin film transistor memory, and the device fabricated by Lau has the highest ON current and showed better device performance.
The bio-organic thin film transistor (BiOTFT) with the DNA and DNA-surfactant complex as a dielectric layer shows
memory function. In order to investigate the effect of surfactant structure on the OTFT memory device performance,
different kinds of surfactant were introduced. Cetyltrimethylammonium chloride (CTMA), Lauroylcholine chloride
(Lau) or Octadecyltrimethylammonium chloride (OTMA) as the cationic surfactant was mixed with DNA to prepare the
DNA complex through the electrostatic interaction. In addition, the different molecular weight DNA also has been
studied to analyze the effect of DNA chain length on the performance of the physical property. Many kinds of methods
including UV-vis, Circular dichiroism (CD), I-V characteristic and atomic force microscope (AFM) have been applied to
analyze the property of DNA complex. In conclusion, all of DNA complex with CTMA, OTMA and Lau were revealed
to work as the bio-organic thin film transistor memory, and the device fabricated by Lau has the highest ON current and showed better device performance.
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