Bandgap-adjustment and enhanced surface photovoltage in Y-substituted LaTa<sup>IV</sup>O<sub>2</sub>N
Cora Bubeck, Marc Widenmeyer, Alexandra T. De Denko, Gunther Richter, Mauro Coduri, Eduardo Salas‐Colera, E. Goering, Hongbin Zhang, Songhak Yoon, Frank E. Osterloh, Anke Weidenkaff
Abstract
Microstructure controlled ammonolysis allowed the synthesis of oxynitrides La<sub>1−x</sub>Y<sub>x</sub>Ta<sup>IV</sup>O<sub>2</sub>N (<italic>x</italic> ≤ 0.3) and YTa(O,N)<sub>3</sub> of which the first ones showed a remarkable up-built of photovoltage even in the presence of reduced tantalum (<italic>e.g.</italic> Ta<sup>4+</sup>).
Topics & Concepts
TantalumX-ray crystallographyCrystallographyInorganic compoundMaterials scienceChemistryPhysicsOpticsDiffractionMetallurgyOrganic chemistryInorganic Chemistry and MaterialsElectronic and Structural Properties of OxidesAdvanced Photocatalysis Techniques