We've updated our Privacy Policy to make it clearer how we use your personal data.

We use cookies to provide you with a better experience. You can read our Cookie Policy here.

Advertisement
Uncovering the Properties of 2D Materials
News

Uncovering the Properties of 2D Materials

Uncovering the Properties of 2D Materials
News

Uncovering the Properties of 2D Materials

Read time:
 

Want a FREE PDF version of This News Story?

Complete the form below and we will email you a PDF version of "Uncovering the Properties of 2D Materials"

First Name*
Last Name*
Email Address*
Country*
Company Type*
Job Function*
Would you like to receive further email communication from Technology Networks?

Technology Networks Ltd. needs the contact information you provide to us to contact you about our products and services. You may unsubscribe from these communications at any time. For information on how to unsubscribe, as well as our privacy practices and commitment to protecting your privacy, check out our Privacy Policy

Professor Yong Zhang is the Bissell Distinguished Professor in the Electrical and Computer Engineering Department at the University of North Carolina Charlotte (UNCC). He leads a group which studies how an epitaxial or supporting substrate can impact the material properties of a 2D material that is often presumed to have weak bonding with the substrate. In addition, they investigate a thermal activation process that requires high temperature capability. In turn, a high temperature experimental set up allows the study of thermal stability under various conditions. 

Since choosing the Linkam TS1500 high temperature stage for their work, the group has used the stage multiple times to study different material systems with the goals of understanding the effects of substrate on 2D materials to reveal the intrinsic properties of the materials and control and modify them with substrate engineering. These include black phosphorus[1], monolayer molybdenum disulphide (MoS2) [2], tungsten disulphide (WS2) [3] and graphene. Other materials, such as copper-zinc-tin selenide (CZTSe), a new solar cell materialhave resulted in publications. 

Professor Zhang has noted several key findings from this research. He says “We have made some important findings which are common among 2D materials. Firstly, we saw that film properties are sensitive to not only the substrate type (e.g. SiO2 vs. sapphire) but also the bonding situation (e.g. epitaxially grown vs. transferred). Second, we found that high temperature studies reveal how film morphology impacts the material properties and how morphology changes with heating. We also saw that the sensitivity of the substrate influence on the film thickness depends on the material property of interest. For instance, the effect of the substrate remains significant for thermal conductivity of the film even the film is already relatively thick, but is much less significant for electronic properties.” 

Advertisement