Simultaneous Optical Transmission Relaxation and Impedance Spectroscopy Measurements of Thin Film Oxygen Surface Exchange Kinetics

2018 ◽  
Keyword(s):  
Thin Film ◽  
Impedance Spectroscopy ◽  
Optical Transmission ◽  
Surface Exchange ◽  
Exchange Kinetics ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

scholarly journals Emergence of Rapid Oxygen Surface Exchange Kinetics during in Situ Crystallization of Mixed Conducting Thin Film Oxides

2019 ◽  
Vol 11 (9) ◽  
pp. 9102-9116 ◽  
Author(s):  
Ting Chen ◽  
George F. Harrington ◽  
Juveria Masood ◽  
Kazunari Sasaki ◽  
Nicola H. Perry
Keyword(s):  
Thin Film ◽  
Surface Exchange ◽  
Thin Film Oxides ◽  
In Situ Crystallization ◽  
Exchange Kinetics ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

Oxygen Surface Exchange Kinetics of Pr2(Ni,Co)O4+δ Thin-Film Model Electrodes

2019 ◽  
Vol 166 (14) ◽  
pp. F1088-F1095 ◽  
Author(s):  
Christian Berger ◽  
Andreas Egger ◽  
Rotraut Merkle ◽  
Edith Bucher ◽  
Benjamin Stuhlhofer ◽  
...  
Keyword(s):  
Thin Film ◽  
Surface Exchange ◽  
Film Model ◽  
Thin Film Model ◽  
Exchange Kinetics ◽  
Kinetics Of ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

Impact of microstructure and crystallinity on surface exchange kinetics of strontium titanium iron oxide perovskite by in situ optical transmission relaxation approach

2017 ◽  
Vol 5 (44) ◽  
pp. 23006-23019 ◽  
Author(s):  
Ting Chen ◽  
George F. Harrington ◽  
Kazunari Sasaki ◽  
Nicola H. Perry
Keyword(s):  
Iron Oxide ◽  
Optical Transmission ◽  
Surface Exchange ◽  
Exchange Kinetics ◽  
Oxide Perovskite ◽  
Kinetics Of ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

Processing-structure-oxygen surface exchange kinetics relationships in perovskite (Sr,Ti)FeO3−x were clarified by non-contact optical transmission relaxation, with kinetics optimized upon crystallization.

scholarly journals Influence of Heterointerfaces on the Kinetics of Oxygen Surface Exchange on Epitaxial La1.85Sr0.15CuO4 Thin Films

2021 ◽  
Vol 11 (9) ◽  
pp. 3778
Author(s):  
Gene Yang ◽  
So-Yeun Kim ◽  
Changhee Sohn ◽  
Jong K. Keum ◽  
Dongkyu Lee
Keyword(s):  
Thin Films ◽  
Oxygen Vacancies ◽  
Elevated Temperatures ◽  
Surface Exchange ◽  
Electrical Conductivity Relaxation ◽  
Exchange Kinetics ◽  
Relaxation Curves ◽  
Kinetics Of ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

Considerable attention has been directed to understanding the influence of heterointerfaces between Ruddlesden–Popper (RP) phases and ABO3 perovskites on the kinetics of oxygen electrocatalysis at elevated temperatures. Here, we report the effect of heterointerfaces on the oxygen surface exchange kinetics by employing heteroepitaxial oxide thin films formed by decorating LaNiO3 (LNO) on La1.85Sr0.15CuO4 (LSCO) thin films. Regardless of LNO decoration, tensile in-plane strain on LSCO films does not change. The oxygen surface exchange coefficients (kchem) of LSCO films extracted from electrical conductivity relaxation curves significantly increase with partial decorations of LNO, whereas full LNO coverage leads to the reduction in the kchem of LSCO films. The activation energy for oxygen exchange in LSCO films significantly decreases with partial LNO decorations in contrast with the full coverage of LNO. Optical spectroscopy reveals the increased oxygen vacancies in the partially covered LSCO films relative to the undecorated LSCO film. We attribute the enhanced oxygen surface exchange kinetics of LSCO to the increased oxygen vacancies by creating the heterointerface between LSCO and LNO.

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