Structural and optical properties of electrohydrodynamically atomized TiO2 nanostructured thin films

Abstract

In this paper, we report an alternate technique for the deposition of nanostructured TiO 2 thin films using the electrohydrodynamic atomization (EHDA) technique using polyvinylpyrrolidone (PVP) as a stabilizer. The required parameters for achieving uniform TiO 2 films using EHDA are also discussed in detail. X-ray diffraction results confirm that the TiO 2 films were oriented in the anatase phase. Scanning electron microscope studies revealed the uniform deposition of the TiO 2 . The purity of the films is characterized by using Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS), confirming the presence of Ti-O bonding in the films without any organic residue. The optical properties of the TiO 2 films were measured by UV-visible spectroscopy, which shows that the transparency of the films is nearly 85% in the visible region. The current-voltage (I -V ) curve of the TiO 2 thin films shows a nearly linear behavior with 45 m cm of electrical resistivity. These results suggest that TiO 2 thin films deposited via the EHDA method possess promising applications in optoelectronic devices.

Spray-on Thin Film PV Solar Cells: Advances, Potentials and Challenges

“…Spray coating via electrohydrodynamic atomization was also employed to fabricate zinc oxide and titanium oxide thin films, which can be used for electron transfer buffer layers, electrodes, etc. [24,25]. Attempts have been made to fabricate spray-on electrodes as well.…”

Electrochemical Properties of Fiber‐in‐Tube‐ and Filled‐Structured TiO2 Nanofiber Anode Materials for Lithium‐Ion Batteries

“…The SEM and TEM images in Figure 2a Figure S3), the Ti 2p 1/2 and Ti 2p 3/2 spin-orbital splitting photoelectrons for TiO 2 were located at binding energies of 464.7 and 458.5 eV,r espectively,a ssigned to the presence of typical Ti 4 + ,w hich are the characteristic peaks of TiO 2 . [26,27] The XPS analysisa lso revealed the carbonfree TiO 2 nanofiber with fiber-in-tuben anostructure. The C1 s spectrum with ap eak at approximately 284.6 eV was not observed.…”

Structural and electrical properties of P3HT:PCBM/PEDOT:PSS thin films deposited through electrohydrodynamic atomization technique

“…As compared with the conventional thin film fabrication techniques such as spin-coating, PVD, and CVD which have limitations for large scale production, EHDA holds more promises toward the deposition of nanostructured thin film and also possesses several advantages such as cost effectiveness, high speed and large scale production etc., [6,7]. This is due to the principle employed in this technique which is described as follows: EHDA employs a generation of stable cone jet from the precursor solution with diameter range from sub-micron to nanoscale with an applied potential.…”