Cristin-prosjekt-ID: 2057585
Sist endret: 7. april 2020 15:18

Cristin-prosjekt-ID: 2057585
Sist endret: 7. april 2020 15:18

Yttrium oxyhydride for hydrogen generation by solar water splitting (MODERATES)


Smagul Karazhanov
ved Institutt for energiteknikk

prosjekteier / koordinerende forskningsansvarlig enhet

  • Institutt for energiteknikk


  • TotalbudsjettNOK 80.000
  • Norges forskningsråd
    Prosjektkode: 308903



Fysikk • Materialteknologi • Kondenserte fasers fysikk


Solenergi • Fotokatalyse • Fotokjemi



  • Faglig utviklingsarbeid


+47 45163599
Smagul Karazhanov


Start: 2. januar 2020 Slutt: 31. desember 2020

Beskrivelse Beskrivelse


Yttrium oxyhydride for hydrogen generation by solar water splitting (MODERATES)

Vitenskapelig sammendrag

Materials development for solar energy conversion for water splitting by
photoelectrochemical cells (PEC) is an important problem. Although TiO2 is
the most promising material because of its oxidative stability, energy band
position, and abundance, it is a wide band gap material that absorbs ~3% of
sunlight from ultraviolet region. To enhance the light absorption, one should
increase the thickness of TiO2, which is problematic because recombination
rate of excitons is very high. Consequently, diffusion length of the excitons
and charge carriers are very low as it reduces the charge transfer. In the
AURORA project we study yttrium oxyhydride (YHO) for applications in PEC.
YHO belongs to emerging family of materials called mixed anion systems. It
has been first synthesized in the Institute for Energy Technology (IFE) group.
Since then materials properties have been studied systematically. Before
illumination, the average transparency and absorbance of the material is
>85% and ~5%, respectively. However, after illumination with sunlight within
~10-15 minutes, transparency reduces and light absorbance increases to
~50%. By adjusting the film composition, work function of YHO can be varied
between 3.1-3.6 eV. Furthermore, illumination of the material by UV light has
enhanced antibacterial properties of thin layers of Ag. These findings have
motivated us to study potential of YHO in PEC, which is an innovative idea.

The expected outcomes are: Clarifying the grain size and porosity, and
electrochemical stability of YHO, fabrication of PEC with YHO- and
oxides/YHO-based photoanodes, establishing performance of PEC,
evaluation of potential of YHO for applications in PEC, submission of two
joint journal articles, one conference proceeding, and a joint proposal to
H2020 about PEC with the oxyhydride-based photoanode. Exchange visits of
senior researchers, PhD students and young researchers between DEPSOL,
KeraNor AS, and UP will be implemented. 




Smagul Karazhanov

  • Tilknyttet:
    ved Institutt for energiteknikk
  • Tilknyttet:
    ved Solenergi ved Institutt for energiteknikk
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