Simple fabrication method for atomically-thin crystal devices with polymer passivation

Autor: Jong Mok Ok, Sangwook Lee, Changil Kwon, Jun Sung Kim, So-Young Kim, Youngwook Kim, Yong Hyeon Kim
Rok vydání: 2016
Předmět:
Zdroj: Synthetic Metals. 216:98-102
ISSN: 0379-6779
DOI: 10.1016/j.synthmet.2015.11.027
Popis: Among various candidates of atomically thin crystals, many of them are known to be chemically unstable against elevated temperatures or moisture/oxygen in ambient conditions. Using a mechanical transfer method combined with regular electron-beam lithography, we developed a simple procedure for fabricating the electronic devices based on air-sensitive crystals with polymer passivation. As an example, we show that atomically-thin iron-selenide single crystal maintains its superconductivity after device fabrication, which cannot be realized using the conventional lithography process. This demonstrates that our method offers a new opportunity to investigate the unconventional electrical properties of various atomically-thin air-sensitive crystals.
Databáze: OpenAIRE