Synthesis of freestanding perovskite oxide thin films by using brownmillerite SrCoO2.5 as a sacrificial layer

Zhou, Weikun1; Han, Wenqiao1; Yang, Yihao1; Shu, Liang1; Luo, Qinggui1; Ji, Yanjiang1; Jin, Cai1; Zhang, Yingli2; Song, Jiahao2; Ye, Mao1; Liu, Qi1; Hu, Songbai1; Chen, Lang1

2023-02-06

10.1063/5.0131056

APPLIED PHYSICS LETTERS   影响因子和分区

0003-6951

1077-3118

Freestanding perovskite thin films display many unprecedented properties and exhibit the potential to be easily integrated on other non-oxide substrates or layers. In this work, we demonstrated a pathway to synthesis freestanding perovskite oxide thin films by using brownmillerite SrCoO2.5 as a sacrificial layer. Four representative freestanding perovskite oxide films, e.g., ferromagnetic SrRuO3, La0.7Sr0.3MnO3, dielectric SrTiO3, and ferroelectric Pb(Zr0.2Ti0.8)O-3, were produced by etching SrCoO2.5 in Fe(NO3)(3) weak acidic solution at room temperature. A 80 nm SrRuO3, which served as an H+ conduction channel, was deposited as a bottom layer of SrCoO2.5 to trigger a quick dissolution for the exfoliation of SrTiO3 and Pb(Zr0.2Ti0.8)O-3 poor H+ conductor. Their crystal structure and physical properties were well retained in transferred films. Our work demonstrated the wide applicability of SrCoO2.5 as a sacrificial layer on the synthesis of freestanding perovskite oxide thin films.

SCI ; EI

英语

NI论文

第一 ; 通讯

NSFC (National Natural Science Foundation of China)["11804145","51972160","12004156"] ; Science and Technology Research Items of Shenzhen["JCYJ20190809142603695","JCYJ20190809181601639"] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515110519] ; Ministry of Science and Technology of the People's Republic of China[2022YFA1402903]

Physics

Physics, Applied

WOS:000926949700002

AIP Publishing

20230713583416

Cobalt compounds ; Crystal structure ; Etching ; Iron compounds ; Lanthanum compounds ; Lead compounds ; Manganese compounds ; Oxide films ; Perovskite ; Perovskite solar cells ; Strontium titanates ; Thin films ; Zirconium compounds

Minerals:482.2 ; Solar Cells:702.3 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Crystal Lattice:933.1.1

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Zhou, Weikun,Han, Wenqiao,Yang, Yihao,et al. Synthesis of freestanding perovskite oxide thin films by using brownmillerite SrCoO2.5 as a sacrificial layer[J]. APPLIED PHYSICS LETTERS,2023,122(6).

Zhou, Weikun.,Han, Wenqiao.,Yang, Yihao.,Shu, Liang.,Luo, Qinggui.,...&Chen, Lang.(2023).Synthesis of freestanding perovskite oxide thin films by using brownmillerite SrCoO2.5 as a sacrificial layer.APPLIED PHYSICS LETTERS,122(6).

Zhou, Weikun,et al."Synthesis of freestanding perovskite oxide thin films by using brownmillerite SrCoO2.5 as a sacrificial layer".APPLIED PHYSICS LETTERS 122.6(2023).