LMGP Seminar : Dr. Liang TIAN - Nitrogen-doped TiO2 by atomic layer deposition for energy applications

Nitrogen-doped TiO₂ is well-known for improving photocatalysis properties of undoped TiO₂.
However, in this project project carried out at SiMaP (Saint Martin d’Hères, France), , we are looking at fabricating three-dimensional transparent TiO₂ based p-n junctions for solar cell and light emitting diode applications. This raises two challenges: conformal coating of the high-aspect ratio template and efficient p-type doping of the TiO₂ thin layers. Such a doping is achieved with Nitrogen-doped TiO₂. We are showing that the conductivity type is a function of the thickness which relates to a given morphology and phases present in the TiO₂  thin layers. A minimum resistivity of 20 ? cm is eventually obtained.

Architecture of the TiO2 based p-n junctions for solar cells

Liang Tian was educated at the University of Bristol, UK (Msc 2004) and the University of Birmingham, UK (PhD 2008). Afterwards, she worked as a research scientist at 3-Cs Ltd., Malvern (UK) and then as a post-doc at SiMaP, Grenoble (France). Currently, she is working on the MOON project at LMGP, Grenoble. Her research focuses on thin film depositions and characterisations.