The effect of concentration and time of hydrothermal process on the fluorescent property of Molybdenum Diselenide nano-layers
محورهای موضوعی : فصلنامه نانوساختارهای اپتوالکترونیکیVahid Baroogh Miandoab 1 , Esmaiel Saievar Iranizad 2 , Hemmati Kahrade 3
1 - Department of Physics, Faculty of Basic Science,
Tarbiat Modares University, Tehran, Iran
2 - 1Department of Physics, Faculty of Basic Science,
Tarbiat Modares University, Tehran, Iran
3 - 1Department of Physics, Faculty of Basic Science,
Tarbiat Modares University, Tehran, Iran
کلید واژه: Nano layer, Molybdenum diselenide, Fluorescence,
چکیده مقاله :
The group of 2D materials contains almost all the elements of the periodic table. In contrast to the graphene sheet, they are abundant, this creates a variety of electronic properties including metals, semimetals, insulators and semiconductors. Band gaps of these materials are direct or indirect by ranging from ultraviolet to infrared, for this reason, have received much attention for nanoelectronics, optoelectronics and flexible devices.
In this study, by a simple hydrothermal method, which is a bottom-up approach, molybdenum diselenide two-dimensional layers were synthesized. The samples were analyzed by X-ray diffraction spectroscopy, and the compound molybdenum diselenide was confirmed for the samples synthesized, and also with UV-visible spectroscopy (UV-Vis) to study the absorption spectrum and Fluorescence Spectroscopy of Fluorescence (PL) to investigate the properties of fluorescent, the nanoparticles were studied, and found that, by changing the concentration and time of hydrothermal process, the intensity of emission changes. Scanning electron micrographs indicate the size of 100 nanometers for particles synthesized.
[1] D. M. Andoshe, J.-M. Jeon, S. Y. Kim, and H. W. Jang, Two-dimensional transition metal dichalcogenide nanomaterials for solar water splitting, Electronic Materials Letters, 11 (2015) 323-335.
[2] M. Chhowalla, H. S. Shin, G. Eda, L.-J. Li, K. P. Loh, and H. Zhang, The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets, Nature chemistry, 5 (2013) 263-275.
[3] P. Miro, M. Audiffred, and T. Heine, An atlas of two-dimensional materials, Chemical Society Reviews, 43 (2014) 6537-6554.
[4] S. Balendhran, S. Walia, H. Nili, J. Z. Ou, S. Zhuiykov, R. B. Kaner, et al., Two‐dimensional molybdenum trioxide and dichalcogenides, Advanced Functional Materials, 23 (2013) 3952-3970.
[5] Y. Zhang, T.-R. Chang, B. Zhou, Y.-T. Cui, H. Yan, Z. Liu, et al., Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2, Nature nanotechnology, 9 (2014) 111-115.
[6] J. Kang, S. Tongay, J. Zhou, J. Li, and J. Wu, Band offsets and heterostructures of two-dimensional semiconductors, Applied Physics Letters, 102 (2013) 012111.
[7] C. Fan, Z. Wei, S. Yang, and J. Li, Synthesis of MoSe2 flower-like nanostructures and their photo-responsive properties, RSC Advances, 4 (2014) 775-778.
[8] D. Kong, H. Wang, J. J. Cha, M. Pasta, K. J. Koski, J. Yao, et al., Synthesis of MoS2 and MoSe2 films with vertically aligned layers, Nano letters, 13 (2013) 1341-1347.
[9] C. Xu, S. Peng, C. Tan, H. Ang, H. Tan, H. Zhang, et al., Ultrathin S-doped MoSe2 nanosheets for efficient hydrogen evolution, Journal of Materials Chemistry A, 2 (2014) 5597-5601.
[10] H. Wang, D. Kong, P. Johanes, J. J. Cha, G. Zheng, K. Yan, et al., MoSe2 and WSe2 nanofilms with vertically aligned molecular layers on curved and rough surfaces, Nano letters, 13 (2013) 3426-3433.
[11] L. Ma, X. Zhou, L. Xu, X. Xu, L. Zhang, and W. Chen, Ultrathin few-layered molybdenum selenide/graphene hybrid with superior electrochemical Li-storage performance, Journal of Power Sources, 285 (2015) 274-280.
[12] C. Dai, E. Qing, Y. Li, Z. Zhou, C. Yang, X. Tian, et al., Novel MoSe2 hierarchical microspheres for applications in visible-light-driven advanced oxidation processes, Nanoscale, 7 (2015) 19970-19976.
[13] S. Balendhran, S. Walia, H. Nili, J. Z. Ou, S. Zhuiykov, R. B. Kaner, et al., Two‐dimensional molybdenum trioxide and dichalcogenides, Advanced Functional Materials, 23 (2013) 3952-3970.
[14] Z. Zhang, X. Yang, Y. Fu, and K. Du, Ultrathin molybdenum diselenide nanosheets anchored on multi-walled carbon nanotubes as anode composites for high performance sodium-ion batteries, Journal of Power Sources, 296 (2015) 2-9.
[15] Tonndorf, Philipp, Robert Schmidt, Philipp Böttger, Xiao Zhang, Janna Börner, Andreas Liebig, Manfred Albrecht et al, Photoluminescence emission and Raman response of monolayer MoS2, MoSe2, and WSe2, Optics express 4 (2013) 4908-4916.
