Kim, Hae-Ryoung Kim, Jong-Cheol Lee, Kyung-Ryul Ji, Ho-Il Lee, Hae-Weon Lee, Jong-Ho Son, Ji-Won 2024-01-20T17:05:00Z 2024-01-20T17:05:00Z 2021-09-05 2011-04 1463-9076 https://pubs.kist.re.kr/handle/201004/130468 The nano-size effect, which indicates a drastic increase in conductivity in solid electrolyte materials of nano-scale microstructures, has drawn substantial attention in various research fields including in the field of solid oxide fuel cells (SOFCs). However, especially in the cases of the conductivity of ultra-thin films measured in an in-plane configuration, it is highly possible that the 'apparent' conductivity increase originates from electrical current flowing through other conduction paths than the thin film. As a systematic study to interrogate those measurement artifacts, we report various sources of electrical current leaks regarding in-plane conductivity measurements, specifically insulators in the measurement set-up. We have observed a 'great conductivity increase' up to an order of magnitude at a very thin thickness of a single layer yttria-stabilized zirconia (YSZ) film in a set-up with an intentional artifact current flow source. Here we propose that the nano-size effect, reported to appear in ultra-thin single layer YSZ, can be a result of misinterpretation. English ROYAL SOC CHEMISTRY PULSED-LASER DEPOSITION OXIDE FUEL-CELLS ELECTRICAL-CONDUCTIVITY IONIC-CONDUCTIVITY NANOCRYSTALLINE CERIA HETEROSTRUCTURES SUPERLATTICES ENERGY 'Illusional' nano-size effect due to artifacts of in-plane conductivity measurements of ultra-thin films Article 10.1039/c0cp02673e 1 PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.13, no.13, pp.6133 - 6137 PHYSICAL CHEMISTRY CHEMICAL PHYSICS 13 13 6133 6137 scie scopus 000288447100079 2-s2.0-79952731513 Chemistry, Physical Physics, Atomic, Molecular & Chemical Chemistry Physics Article PULSED-LASER DEPOSITION OXIDE FUEL-CELLS ELECTRICAL-CONDUCTIVITY IONIC-CONDUCTIVITY NANOCRYSTALLINE CERIA HETEROSTRUCTURES SUPERLATTICES ENERGY SOFC thin film conductivity measurement artifact