Abstract
Devices containing transition metal dichalcogenides are being investigated for next generation electronics. Understanding material properties under typical use conditions is important for the longevity and effectiveness of these devices. In this study, CVD-grown MoS2 crystals with pre-existing defects from the growth process were subjected to DC-voltages of 10 V, 20 V, and 40 V for up to 96 h. The presence of pre-existing defects was found to lead to more extensive material damage that scales with voltage and time. SEM, AFM, Raman and photoluminescence imaging indicated regions of increased defect concentration post-electrical stress.
Graphical abstract
References
J.L. Doherty et al., Capping layers to improve the electrical stress stability of MoS2 transistors. ACS Appl. Mater. Interfaces 12(31), 35698–35706 (2020)
Y. Zhang et al., Photothermoelectric and photovoltaic effects both present in MoS2. Sci. Rep. 5(1), 7938 (2015)
D. Dumcenco et al., Large-area epitaxial monolayer MoS2. ACS Nano 9(4), 4611–4620 (2015)
H. Zhang et al., Stabilizing the heavily-doped and metallic phase of MoS2 monolayers with surface functionalization. 2D Mater. 9(1), 015033 (2021)
S. Hao, B. Yang, Y. Gao, Quenching induced fracture behaviors of CVD-grown polycrystalline molybdenum disulfide films. RSC Adv. 6(64), 59816–59822 (2016)
S. Hao, B. Yang, Y. Gao, Orientation-specific transgranular fracture behavior of CVD-grown monolayer MoS2 single crystal. Appl. Phys. Lett. 110(15), 153105 (2017)
A.J. Watson et al., Transfer of large-scale two-dimensional semiconductors: challenges and developments. 2D Mater. 8(3), 032001 (2021)
R. Mupparapu, T. Bucher, I. Staude, Integration of two-dimensional transition metal dichalcogenides with Mie-resonant dielectric nanostructures. Adv. Phys.: X 5(1), 1734083 (2020)
M. Sharma, A. Singh, R. Singh, Monolayer MoS2 transferred on arbitrary substrates for potential use in flexible electronics. ACS Appl. Nano Mater. 3(5), 4445–4453 (2020)
R. Garcia, R. Proksch, Nanomechanical mapping of soft matter by bimodal force microscopy. Eur. Polym. J. 49(8), 1897–1906 (2013)
W. Melitz et al., Kelvin probe force microscopy and its application. Surf. Sci. Rep. 66(1), 1–27 (2011)
M.C. Strus et al., Accelerated reliability testing of highly aligned single-walled carbon nanotube networks subjected to DC electrical stressing. Nanotechnology 22(26), 265713 (2011)
D. Lembke, S. Bertolazzi, A. Kis, Single-layer MoS2 electronics. Acc. Chem. Res. 48(1), 100–110 (2015)
X. Bian, C. Kim, G.E. Karniadakis, 111 years of Brownian motion. Soft Matter 12(30), 6331–6346 (2016)
G. Hao et al., Electrostatic properties of few-layer MoS2 films. AIP Adv. 3(4), 042125 (2013)
K.M. McCreary et al., A- and B-exciton photoluminescence intensity ratio as a measure of sample quality for transition metal dichalcogenide monolayers. APL Mater. 6(11), 111106 (2018)
S. Tongay et al., Defects activated photoluminescence in two-dimensional semiconductors: interplay between bound, charged and free excitons. Sci. Rep. 3(1), 2657 (2013)
Y. Liu et al., Enhanced photoluminescence of monolayer MoS2 on a stepped gold structure. Chin. Phys. B 31, 087803 (2022)
Acknowledgments
We gratefully acknowledge Nuwan H. Attanayake at NREL for the MoS2 material and Jason Holm at NIST for SEM assistance. D. Goggin performed this work as part of a National Research Council postdoctoral fellowship at NIST.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Competing interest
Certain commercial equipment, instruments, or materials are identified in this paper to specify the experimental procedure adequately. Such identification is not intended to imply recommendation or endorsement by NIST, nor is it intended to imply that the materials or equipment identified are necessarily the best available for the purpose. The authors declare no competing financial interests.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Contribution of the US Government. Not subject to copyright in the United States.
Supplementary Information
Below is the link to the electronic supplementary material.
Rights and permissions
About this article
Cite this article
Mansfield, E., Goggin, D., Killgore, J. et al. Degradation of CVD-grown MoS2 subjected to DC electrical stress. MRS Communications 12, 878–885 (2022). https://doi.org/10.1557/s43579-022-00261-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/s43579-022-00261-x