Clark DR1,2, Zhu H3, Diercks DR2, Ricote S3, Kee RJ3, Almansoori A4, Gorman BP2, O'Hayre RP1,2.
Nano Lett. 2016 Nov 9;16(11):6924-6930. Epub 2016 Oct 5.A laser-assisted atom-probe-tomographic (LAAPT) method has been developed and applied to measure and characterize the three-dimensional atomic and electronic nanostructure at an yttrium-doped barium zirconate (BaZr0.9Y0.1O3-δ, BZY10) grain boundary. Proton-conducting perovskites, such as BZY10, are attracting intense interest for a variety of energy conversion applications. However, their implementation has been hindered, in part, because of high grain-boundary (GB) resistance that is attributed to a positive GB space-charge layer (SCL). Read More