SFB 1214 - TP B4 Structure formation in confined colloidal rod-sphere mixtures

Institutionen
  • Sonderforschungsbereiche
  • FB Chemie
  • SFB 1214 "Anisotropic Particles as Building Blocks"
  • FB Physik
Publikationen
  Kalb, Julian; Dorman, James A.; Gerigk, Melanie; Knittel, Vanessa; Plüisch, Claudia S.; Trepka, Bastian; Lehr, Daniela; Wittemann, Alexander; Polarz, Sebastian; Schmidt-Mende, Lukas (2018): Influence of substrates and rutile seed layers on the assembly of hydrothermally grown rutile TiO2 nanorod arrays i Journal of Crystal Growth ; 494 (2018). - S. 26-35. - ISSN 0022-0248. - eISSN 1873-5002  

Influence of substrates and rutile seed layers on the assembly of hydrothermally grown rutile TiO2 nanorod arrays

Kalb, Julian; Dorman, James A.; Gerigk, Melanie; Knittel, Vanessa; Plüisch, Claudia S.; Trepka, Bastian; Lehr, Daniela; Wittemann, Alexander; Polarz, Sebastian; Schmidt-Mende, Lukas

Rutile TiO2 nanorod arrays (NRAs) are applicable in various prospective technologies. Hydrothermal methods present a simple technique to fabricate such NRAs. In this report, we present the fabrication of seed layers for the hydrothermal growth of rutile TiO2 nanorods via sputter deposition, electron-beam evaporation, and sol-gel method and study the influence of each on the growth behavior. To satisfy the requirements of numerous applications, p-type silicon, platinum, levitating carbon membranes, a template made of polystyrene spheres, and commercial fluorine tin oxide (FTO) were employed as substrates. We document the structural properties of the TiO2 seed layers and describe the relationship between the characteristics of the seed crystals, the growth evolution, and the appearance of as-grown nanorods. Various growth stages of rutile TiO2 nanorods are compared depending on whether they are grown on polycrystalline TiO2 or FTO seed layers. In both cases, a homogenous TiO2 bottom layer is formed at the seed layer/substrate interface, which is essential for electronic applications such as hybrid solar cells. Detached NRAs illustrate the effect of rutile FTO and TiO2 on the porosity of this bottom layer. Further details about the formation process of this layer are obtained from the growth on confined seed layers fabricated by electron-beam lithography.

Herkunft (Projekte)

Mittelgeber
Name Kennziffer Beschreibung Laufzeit
SFB591/16SFB 1214keine Angabe
Weitere Informationen
Laufzeit: 01.07.2016 – 30.06.2020