Park, Jung Hoon Ahn, Junsung Yoon, Kyung Joong Kim, Hyoungchul Ji, Ho-Il Lee, Jong-Ho Han, Seung Min Son, Ji-Won 2024-01-19T22:33:53Z 2024-01-19T22:33:53Z 2021-09-03 2018-06 0013-4651 https://pubs.kist.re.kr/handle/201004/121345 Thin films of yttria-stabilized zirconia (Y2O3-stabilized ZrO2, YSZ) with various columnar grain sizes are successfully fabricated by combining a post-annealed seed layer and a successively deposited effective layer by pulsed laser deposition (PLD). As a result, YSZ thin films of different columnar grain sizes (column diameters of similar to 15 nm, similar to 40 nm, and similar to 190 nm) are obtained with identical fabrication parameters except for the seed layer to engineer the grain size. According to analyses of the physical properties, the variation in the grain size induces differences not only in the grain boundary density, but also the strain state in each sample. These changes in physical properties are considered to affect the electrical property of the thin films in a combined way. Measurements of the cross-plane electrical conductivities of the YSZ thin films reveal that the electrical conductivity of the YSZ thin film increases up to 2 times as the columnar grain size increases. The present study provides intelligent and effective method for the design and manipulation of the microstructure of oxide thin films, thus enabling investigations into the correlated properties of interest. (C) 2018 The Electrochemical Society. English ELECTROCHEMICAL SOC INC PULSED-LASER DEPOSITION OXIDE FUEL-CELLS ELECTRICAL-CONDUCTIVITY IONIC-CONDUCTIVITY LOW-TEMPERATURE RESIDUAL-STRESS YSZ MICROSTRUCTURE GROWTH ELECTROLYTES Columnar Grain Size Effect on Cross-Plane Conductivity of Yttria-Stabilized Zirconia Thin Films Article 10.1149/2.0961809jes 1 JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.165, no.9, pp.F671 - F676 JOURNAL OF THE ELECTROCHEMICAL SOCIETY 165 9 F671 F676 scie scopus 000440924800123 2-s2.0-85049322048 Electrochemistry Materials Science, Coatings & Films Electrochemistry Materials Science Article PULSED-LASER DEPOSITION OXIDE FUEL-CELLS ELECTRICAL-CONDUCTIVITY IONIC-CONDUCTIVITY LOW-TEMPERATURE RESIDUAL-STRESS YSZ MICROSTRUCTURE GROWTH ELECTROLYTES YSZ thin film cross plane conductivity