Electrical conductivity of RF-sputtered Gd-doped ceria film measured in across-plane mode
SCIE
SCOPUS
- Title
- Electrical conductivity of RF-sputtered Gd-doped ceria film measured in across-plane mode
- Authors
- Kim, Sun Woong; Choi, Gyeong Man
- Date Issued
- 2017-10
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Gd-doped ceria (GDC, Ce0.86Gd0.14O2 - delta) films are deposited on conductive substrates by RF-magnetron sputtering and their across-plane electrical conductivities (perpendicular to film plane) are measured as a function of temperature (300 <= T <= 400 degrees C) and oxygen partial pressure (Po-2) to assess the feasibility of their use as an electrolyte in miniaturized solid oxide fuel cells (micro-SOFCs). The films deposited at relatively high T = 500 degrees C, deposited on either dense or porous substrate, show columnar grains with diameter 200 nm. The magnitude of conductivities in air is similar to those of pellet-form GDC. However, the electronic conductivities of GDC films in low Po-2 are higher than that of pellet.
- Keywords
- OXIDE FUEL-CELLS; PULSED-LASER DEPOSITION; THIN-FILMS; ELECTROCHEMICAL PROPERTIES; TEMPERATURE; ELECTROLYTES; POLYCRYSTALLINE; MICROSTRUCTURE; FABRICATION; EXPANSION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/92003
- DOI
- 10.1016/j.ssi.2017.07.006
- ISSN
- 0167-2738
- Article Type
- Article
- Citation
- SOLID STATE IONICS, vol. 309, page. 58 - 62, 2017-10
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- There are no files associated with this item.
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