The TiO(2) nanoparticle effect on the performance of a conducting polymer Schottky diode

Nanotechnology
K H YooJaehwan Kim

Abstract

Among the conjugate polymers, poly(3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) has been paid a great deal of attention for various application fields. The absorption intensity of the whole UV-visible range increases linearly, as the concentration of PEDOT:PSS increases. When a small amount of TiO(2) nanoparticles are dispersed in the PEDOT:PSS solution, the absorption in the visible range normally increases, but the UV range absorption (TiO(2) absorption area) is greatly depressed as the concentration of PEDOT:PSS increases. Various weight ratios of TiO(2) nanoparticles in PEDOT:PSS were prepared. The TiO(2)/PEDOT:PSS solution was spin-coated onto the Al electrode and thermally treated to remove water molecules and densify the film. These thermal processes generated nanocracks and nanoholes on the surface of the TiO(2)/PEDOT:PSS film. As the heating temperature increased, wider and longer nanocracks were generated. These nanocracks and nanoholes can be removed by subsequent coating and heating processes. Schottky diodes were fabricated using four different concentrations of TiO(2)-PEDOT:PSS solution. The forward current increased nearly two orders of magnitude by doping approximately 1% of TiO(2) nanoparticl...Continue Reading

References

Feb 7, 2003·Nature·Michael Grätzel
Feb 7, 2003·Nature·Eric W McFarland, Jing Tang
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Dec 15, 2006·The Journal of Physical Chemistry. B·Pingrong YuArthur J Nozik
Apr 9, 2008·Nanotechnology·Guang-Feng WangRong-Xin Wang

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Citations

Jul 1, 2011·Nanoscale·Feng-Yun WangJohnny C Ho
Jan 1, 2010·Journal of Materials Chemistry·Yongquan QuXiangfeng Duan

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