Electrode Properties of Pr_0.7Sr_0.3Fe_0.8Al_0.2O_3-δ Thin Film Prepared by Pulsed Laser Deposition

Abstract

A mixed conductive Pr 0.7 Sr 0.3 Fe 0.8 Al 0.2 O 3-δ (PSFA) thin film was prepared by using pulsed laser deposition (PLD) and its electrochemical properties have been investigated. A dense PSFA target for PLD was prepared at 1130ºC for 10 h. By using the target, 285 nm-thick PSFA thin film was deposited on an 8 mol%Y 2 O 3 -doped ZrO 2 substrate at 625ºC. The PSFA thin film was well crystallized and its grain size was in the range of 5 to 10 nm. The PSFA thin film showed an area specific resistance (ASR) of 0.37 Ω·cm 2 at 900ºC. The activation energy of ASR was approximately 1.6 eV at temperature range of 600 to 900ºC.