In Situ Growth of CVD Graphene Directly on Dielectric Surface toward Application
Artikel i vetenskaplig tidskrift, 2020

A technique for the in situ growth of patterned graphene by CVD has been achieved directly on insulating substrates at 800 degrees C. The graphene growth is catalyzed by a Ni-Cu alloy sacrificial layer, which integrates many advantages such as being lithography-free, and almost wrinkle-free, with a high repeatability and rapid growth. The etching method of the metal sacrificial layer is the core of this technique, and the mechanism is analyzed. Graphene has been found to play an important role in accelerating etching speeds. The Ni-Cu alloy exhibits a high catalytic activity, and thus, high-quality graphene can be obtained at a lower temperature. Moreover, the Ni-Cu layer accommodates a limited amount of carbon atoms, which ensures a high monolayer ratio of the graphene. The carbon solid solubility of the alloy is calculated theoretically and used to explain the experimental findings. The method is compatible with the current semiconductor process and is conducive to the industrialization of graphene devices.

graphene

lithography-free

in situ growth

chemical vapor deposition

insulating substrate

Författare

Yibo Dong

Beijing University of Technology

Sheng Guo

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Huahai Mao

Thermocalc Software AB

Kungliga Tekniska Högskolan (KTH)

Chen Xu

Beijing University of Technology

Yiyang Xie

Beijing University of Technology

Jun Deng

Beijing University of Technology

Le Wang

Beijing University of Technology

Zaifa Du

Beijing University of Technology

Fangzhu Xiong

Beijing University of Technology

Jie Sun

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

ACS APPLIED ELECTRONIC MATERIALS

2637-6113 (ISSN)

Vol. 2 1187 238-246

Ämneskategorier

Materialkemi

Metallurgi och metalliska material

Den kondenserade materiens fysik

Styrkeområden

Materialvetenskap

DOI

10.1021/acsaelm.9b00719

Mer information

Senast uppdaterat

2020-06-02