Abnormal Optoelectric Properties of Two-Dimensional Protonic Ruthenium Oxide with a Hexagonal Structure
- Authors
- Park, Hee Jung; Lee, Kimoon; Kim, Ill-Doo; Choi, Seon Jin; Ryu, Byungki
- Issue Date
- Jul-2018
- Publisher
- AMER CHEMICAL SOC
- Keywords
- protonic ruthenium-oxide; sheet resistance; transmittance; transparent conducting electrode; DFT simulation
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.10, no.26, pp.22661 - 22668
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 10
- Number
- 26
- Start Page
- 22661
- End Page
- 22668
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/16803
- DOI
- 10.1021/acsami.8b07533
- ISSN
- 1944-8244
- Abstract
- Two-dimensional structures can potentially lead to not only modulation of electron transport but also the variations of optical property. Protonic ruthenium oxide, a two-dimensional atomic sheet material, has been synthesized, and its optoelectric properties have been investigated. The results indicate that protonic ruthenium oxide is an excellent candidate for use as a flexible, transparent conducting material. A hydrated-ruthenium-oxide sheet has been first prepared via the chemical exfoliation of sodium intercalated ruthenium oxide (NaRuO2) and, subsequently, converted into a protonic ruthenium oxide sheet using thermal treatment. A thermally activated transport mechanism is dominant in hydrated ruthenium oxide but diminishes in protonic ruthenium oxide; this resulted in a high electrical conductivity of similar to 200 S/cm of the protonic sheet. Because of the unique interband and intraband structure, protonic ruthenium oxide has a small optical absorption coefficient of , similar to 1.62%/L. Consequently, such high conductivity and low absorption coefficient of protonic ruthenium oxide results in excellent transparent conducting properties.
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