Interfacial Assembly of Ultrathin, Functional MXene Films
- Authors
- Kim, Seon Joon; Choi, Junghoon; Maleski, Kathleen; Hantanasirisakul, Kanit; Jung, Hee-Tae; Gogotsi, Yury; Ahn, Chi Won
- Issue Date
- 2019-09-04
- Publisher
- American Chemical Society
- Citation
- ACS Applied Materials & Interfaces, v.11, no.35, pp.32320 - 32327
- Abstract
- MXenes are a prominent family of two-dimensional materials because of their metallic conductivity and abundant surface functionalities. Although MXenes have been extensively studied as bulk particles or free-standing films, thin and transparent films are needed for optical, optoelectronic, sensing, and other applications. In this study, we demonstrate a facile method to fabricate ultrathin (similar to 10 nm) Ti3C2Tx MXene films by an interfacial assembly technique. The self-assembling behavior of MXene flakes resulted in films with a high stacking order and strong plane- to-plane adherence, where optimal films of 10 nm thickness displayed a low sheet resistance of 310 Omega/square. By using surface tension, films were transferred onto various types of planar and curved substrates. Moreover, multiple films were consecutively transferred onto substrates from a single batch of solution, showing the efficient use of the material. When the films were utilized as gas sensing channels, a high signal-to-noise ratio, up to 320, was observed, where the gas response of films assembled from small MXene flakes was 10 times larger than that from large flakes. This work provides a facile and efficient method to allow MXenes to be further exploited for thin-film applications.
- Keywords
- TRANSPARENT; TRANSITION; THICKNESS; MOS2; TRANSPARENT; TRANSITION; THICKNESS; MOS2; MXene; interfacial self-assembly; conformal transfer; thin film; gas sensor
- ISSN
- 1944-8244
- URI
- https://pubs.kist.re.kr/handle/201004/119589
- DOI
- 10.1021/acsami.9b12539
- Appears in Collections:
- KIST Article > 2019
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.