@article { , title = {Phonon-glass electron-crystal behaviour by A site disorder in n-type thermoelectric oxides}, abstract = {© 2017 The Royal Society of Chemistry. Phonon-glass electron-crystal (PGEC) behaviour is realised in La0.5Na0.5Ti1-xNbxO3 thermoelectric oxides. The vibrational disorder imposed by the presence of both La3+ and Na+ cations on the A site of the ABO3 perovskite oxide La0.5Na0.5TiO3 produces a phonon-glass with a thermal conductivity, κ, 80\% lower than that of SrTiO3 at room temperature. Unlike other state-of-the-art thermoelectric oxides, where there is strong coupling of κ to the electronic power factor, the electronic transport of these materials can be optimised independently of the thermal transport through cation substitution at the octahedral B site. The low κ of the phonon-glass parent is retained across the La0.5Na0.5Ti1-xNbxO3 series without disrupting the electronic conductivity, affording PGEC behaviour in oxides.}, doi = {10.1039/c7ee01510k}, eissn = {1754-5706}, issn = {1754-5692}, issue = {9}, journal = {Energy and Environmental Science}, note = {REF\_eligibility comment: This paper was accepted for publication on 02/08/2017 and published on 02/08/2017. The AAM was deposited in the research repository of UCL on 18/10/2017, i.e. within 3 months of the date of acceptance. Date of deposit confirmed by UCL repository staff as the date is not visible in the publicly-available record https://discovery.ucl.ac.uk/id/eprint/1574123/}, pages = {1917-1922}, publicationstatus = {Published}, publisher = {Royal Society of Chemistry}, url = {https://nottingham-repository.worktribe.com/output/1287707}, volume = {10}, year = {2017}, author = {Daniels, L. M. and Savvin, S. N. and Pitcher, M. J. and Dyer, M. S. and Claridge, J. B. and Ling, S. and Slater, B. and Corà, F. and Alaria, J. and Rosseinsky, M. J.} }