Toward Switchable Photovoltaic Effect via Tailoring Mobile Oxygen Vacancies in Perovskite Oxide Films

2016 ◽  
Vol 8 (50) ◽  
pp. 34590-34597 ◽  
Author(s):  
Chen Ge ◽  
Kui-juan Jin ◽  
Qing-hua Zhang ◽  
Jian-yu Du ◽  
Lin Gu ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Photovoltaic Effect ◽  
Oxide Films ◽  
Perovskite Oxide ◽  
Mobile Oxygen

scholarly journals Oxygen Vacancies in Perovskite Oxide Piezoelectrics

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5596
Author(s):  
Marina Tyunina
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Chemical Reactions ◽  
Oxygen Vacancies ◽  
Perovskite Oxide ◽  
Semiconductor Physics ◽  
Physical Conditions ◽  
Ferroelectric Behavior ◽  
Piezoelectric Performance ◽  
Mobile Oxygen

The excellent electro-mechanical properties of perovskite oxide ferroelectrics make these materials major piezoelectrics. Oxygen vacancies are believed to easily form, migrate, and strongly affect ferroelectric behavior and, consequently, the piezoelectric performance of these materials and devices based thereon. Mobile oxygen vacancies were proposed to explain high-temperature chemical reactions half a century ago. Today the chemistry-enabled concept of mobile oxygen vacancies has been extrapolated to arbitrary physical conditions and numerous effects and is widely accepted. Here, this popular concept is questioned. The concept is shown to conflict with our modern physical understanding of ferroelectrics. Basic electronic processes known from mature semiconductor physics are demonstrated to explain the key observations that are groundlessly ascribed to mobile oxygen vacancies. The concept of mobile oxygen vacancies is concluded to be misleading.

Effects of Oxygen Vacancies and Cation Valence States on the Triboelectric Property of Substoichiometric Oxide Films

2021 ◽  
Author(s):  
Yongqiao Zhu ◽  
Shiquan Lin ◽  
Wenchao Gao ◽  
Miao Zhang ◽  
Chaogui Yang ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Oxide Films ◽  
Valence States

scholarly journals Substrate coherency driven octahedral rotations in perovskite oxide films

2010 ◽  
Vol 82 (11) ◽  
Author(s):  
James M. Rondinelli ◽  
Nicola A. Spaldin
Keyword(s):  
Oxide Films ◽  
Perovskite Oxide

Correlation of oxygen vacancies to various properties of amorphous zinc tin oxide films

2017 ◽  
Vol 122 (8) ◽  
pp. 085304 ◽  
Author(s):  
Nark-Eon Sung ◽  
Han-Koo Lee ◽  
Keun Hwa Chae ◽  
Jitendra Pal Singh ◽  
Ik-Jae Lee
Keyword(s):  
Tin Oxide ◽  
Oxygen Vacancies ◽  
Oxide Films ◽  
Zinc Tin Oxide ◽  
Tin Oxide Films

Strain screening by mobile oxygen vacancies in SrTiO3

2010 ◽  
Vol 96 (25) ◽  
pp. 251901 ◽  
Author(s):  
Yongsam Kim ◽  
Ankit S. Disa ◽  
Timur E. Babakol ◽  
Joel D. Brock
Keyword(s):  
Oxygen Vacancies ◽  
Strain Screening ◽  
Mobile Oxygen
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