Deoxyribonucleic acid-ceramic hybrid dielectrics for potential application as gate insulators in organic field effect transistors

Abstract

Hybrid films incorporating high dielectric constant k ceramics (BaTiO3 and TiO2) in deoxyribonucleic acid (DNA) were fabricated from highly stable dispersions of the ceramic nanoparticles in viscous, aqueous DNA solutions. Dielectric and electrical properties of the as-prepared nanocomposite films were investigated for potential use as gate insulators in organic field effect transistors. A k value as high as 14 was achieved with a 40 wt. % loading of ceramic nanoparticles in DNA. Electrical resistivities on the order of 1014 Ω cm with leakage current densities on the order of 10−9 A/cm2 were measured from current-voltage experiments under electric field biases up to 50 V/μm.

Temperature evolution of hydration shells in solid DNA didecyldimethylammonium chloride complex studied by 1H NMR spectroscopy

“…There are many reports on fully functional devices like organic light emitting diodes (OLED) [13,40,11], organic field effect transistors (OFET) [39,33], fuel cells [21,34], or lasers [48]. Extensive research concerning DNA based materials is also carried out in the field of nonlinear optics [27,36,41,42].…”

DNA Bases Thymine and Adenine in Bio-Organic Light Emitting Diodes

“…DNA has been used in organic light-emitting diodes (OLEDs) 4 5 7 8 9 10 11 12 13 14 yielding significant increases in efficiency and luminance. Other thin film organic devices 15 16 17 18 19 20 21 have also benefited from the natural biopolymer. However, DNA requires extensive processing and wet fabrication to form thin films 22 .…”

DNA-hexadecyltrimethyl ammonium chloride complex with enhanced thermostability as promising electronic and optoelectronic material

“…A thin layer of DNA derivative introduced in the structure of an of an organic light emitting diode (OLED) has enhanced significantly its performance [1][2][3]. High dielectric constant combined with low electronic conductivity make DNA an interesting material for organic field effect transistors [4,5]. Different dyes can be particularly efficiently intercalated and spatially separated in DNA matrix, what is of enormous interest for nonlinear optics [6][7][8], lasers technology [9][10][11] and electrochromic devices [12].…”