The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Screw-Dislocation-Driven Growth of Two-Dimensional Few-Layer and Pyramid-like WSe2 by Sulfur-Assisted Chemical Vapor Deposition
Open accessAbstract
Two-dimensional (2D) layered tungsten diselenides (WSe2) material has recently drawn a lot of attention due to its unique optoelectronic properties and ambipolar transport behavior. However, direct chemical vapor deposition (CVD) synthesis of 2D WSe2 is not as straightforward as other 2D materials due to the low reactivity between reactants in WSe2 synthesis. In addition, the growth mechanism of WSe2 in such CVD process remains unclear. Here we report the observation of a screw-dislocation-driven (SDD) spiral growth of 2D WSe2 flakes and pyramid-like structures using a sulfur-assisted CVD method. Few-layer and pyramid-like WSe2 flakes instead of monolayer were synthesized by introducing a small amount of sulfur as a reducer to help the selenization of WO3, which is the precursor of tungsten. Clear observations of steps, helical fringes, and herringbone contours under atomic force microscope characterization reveal the existence of screw dislocations in the as-grown WSe2. The generation and propagation mechanisms of screw dislocations during the growth of WSe2 were discussed. Back-gated field-effect transistors were made on these 2D WSe2 materials, which show on/off current ratios of 10(6) and mobility up to 44 cm(2)/(V·s).
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Citations
Cites
Biomimetic Hydrogen Evolution: MoS 2 Nanoparticles as Catalyst for Hydrogen Evolution
Hinnemann, B., Moses, P. G., Bonde, J., Jørgensen, K. P., Nielsen, J. H., Horch, S., Chorkendorff, I., & Nørskov, J. K. (2005) · Journal of the American Chemical Society · doi:10.1021/ja0504690 · Cited by 4,065
Synthesis of MoS 2 and MoSe 2 Films with Vertically Aligned Layers
Kong, D., Wang, H., Cha, J. J., Pasta, M., Koski, K. J., Yao, J., & Cui, Y. (2013) · Nano Letters · doi:10.1021/nl400258t · Cited by 2,250
Chang, K., & Chen, W. (2011) · ACS Nano · doi:10.1021/nn200659w · Cited by 1,663
Cited by
Cai, Z., Liu, B., Zou, X., & Cheng, H.-M. (2018) · Chemical Reviews · doi:10.1021/acs.chemrev.7b00536 · Cited by 1,495
Self-citationLiu, B., Köpf, M., Abbas, A. N., Wang, X., Guo, Q., Jia, Y., Xia, F., Weihrich, R., Bachhuber, F., Pielnhofer, F., et al. (2015) · Advanced Materials · doi:10.1002/adma.201501758 · Cited by 473
Self-citationHalide-assisted atmospheric pressure growth of large WSe2 and WS2 monolayer crystals
Li, S., Wang, S., Tang, D.-M., Zhao, W., Xu, H., Chu, L., Bando, Y., Golberg, D., & Eda, G. (2015) · Applied Materials Today · doi:10.1016/j.apmt.2015.09.001 · Cited by 465
Samadi, M., Sarikhani, N., Zirak, M., Zhang, H., Zhang, H.-L., & Moshfegh, A. Z. (2018) · Nanoscale Horizons · doi:10.1039/c7nh00137a · Cited by 408
Hafeez, M., Gan, L., Li, H., Ma, Y., & Zhai, T. (2016) · Advanced Materials · doi:10.1002/adma.201601977 · Cited by 256
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Metadata
- Authors
- Chen, L., Liu, B., Abbas, A. N., Ma, Y., Fang, X., Liu, Y., & Zhou, C.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-10-28
- Volume
- 8
- Issue
- 11
- Pages
- 11543-11551
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2018278909
- Cited by
- 173
- References
- 3
- FWCI
- 7.45
- Type
- journal article
- Language
- en
- Open access
- green
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