Anisotropic small-polaron hopping in W:BiVO4 single crystals

• Published in: Applied physics letters Vol. 106; no. 2
• Main Authors: Rettie, Alexander J. E., Chemelewski, William D., Lindemuth, Jeffrey, McCloy, John S., Marshall, Luke G., Zhou, Jianshi, Emin, David, Mullins, C. Buddie
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 12.01.2015
• Subjects: Anisotropy; Applied physics; Bismuth oxides; Conductivity; Electrical resistivity; Electron mobility; Hall effect; Polarons; Seebeck effect; Single crystals; Temperature dependence; Tungsten; Vanadates

DC electrical conductivity, Seebeck and Hall coefficients are measured between 300 and 450 K on single crystals of monoclinic bismuth vanadate that are doped n-type with 0.3% tungsten donors (W:BiVO4). Strongly activated small-polaron hopping is implied by the activation energies of the Arrhenius co...