Defects in TMDs (vacancies, substitutional atoms) have been proposed for optical memories and neuromorphic computing. Chemical vapour deposition (CVD) is a synthesis process that allows controllable defect control by careful tuning of process parameters.

We are exploring the use of different growth environments (gases, solid or gaseous precursors), as well as after-growth cooling rates to achieve desired defect density. Further, post-synthesis tools such as electron or optical irradiation are being used to tune the defect density. To fully advance these materials for commercial applications, an in-depth understanding of the growth environment is critical.

Faculty: Akshay Singh

References:

Dash A.K., et al., in preparation

Dash, A.K., et al., Effect of electron-irradiation on layered quantum materials. Bull Mater Sci 44, 227 (2021)