Diversity of TiO2: Controlling the Molecular and Electronic Structure of Atomic-Layer-Deposited Black TiO2

@inproceedings{AliLytty2019DiversityOT,
  title={Diversity
of TiO2: Controlling the Molecular
and Electronic Structure of Atomic-Layer-Deposited Black TiO2},
  author={Harri Ali-L{\"o}ytty and Markku Hannula and Jesse Saari and Lauri Palmolahti and Bela D Bhuskute and Riina Ulkuniemi and Tuomo Nyyss{\"o}nen and Kimmo Lahtonen and Mika Valden},
  booktitle={ACS applied materials & interfaces},
  year={2019}
}
Visually black, electrically leaky, amorphous titania (am-TiO2) thin films were grown by atomic layer deposition (ALD) for photocatalytic applications. Broad spectral absorbance in the visible range and exceptional conductivity are attributed to trapped Ti3+ in the film. Oxidation of Ti3+ upon heat treatment leads to a drop in conductivity, a color change from black to white, and crystallization of am-TiO2. ALD-grown black TiO2, without any heat treatment, is subject to dissolution in alkaline… CONTINUE READING

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