Surface structure modification of ReSe2 nanosheets via carbon ion irradiation
Mei Qiao(乔梅)1, Tie-Jun Wang(王铁军)1,†, Yong Liu(刘泳)2, Tao Liu(刘涛)3, Shan Liu(刘珊)1, and Shi-Cai Xu(许士才)1,‡
1 College of Physics and Electronic Information, Shandong Key Laboratory of Biophysics, Dezhou University, Dezhou 253023, China; 2 School of Physics, State Key Laboratory of Crystal Materials and Key Laboratory of Particle and Particle Irradiation(MOE), Shandong University, Jinan 250100, China; 3 School of Electronic and Information, Qingdao University, Qingdao 266071, China
Abstract The effects of C ion irradiation on multilayer ReSe2 flakes are studied by utilizing different kinds of technologies. The domain sizes, thickness, morphologies of the multilayer ReSe2 flakes on the Al2O3 substrates before and after 1.0-MeV C ion irradiation with different fluence rates are studied by atomic force microscope and scanning electron microscopy. The atomic vibrational spectra of multilayer ReSe2 flakes are detected by micro-Raman spectra. The redshifts of the Raman modes after 1.0-MeV C ion irradiation are observed from the micro-Raman spectra. The elemental compositions and bonding configurations of the multilayer ReSe2 samples before and after irradiation processes are characterized by x-ray photoelectron spectroscopy. The structural properties are also investigated by x-ray diffraction, and it is concluded that after 1.0-MeV C ion irradiation process, multilayer ReSe2 samples continue to grow on Al2O3 substrates, the increase of crystallite size also reveals that the crystallinity is improved with the increase of the layer number after 1.0-MeV C ion irradiation.
(Defects and impurities in crystals; microstructure)
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12105036, 11775135, and 11805108), the Natural Science Foundation of Shandong Province, China (Grant Nos. ZR2020QA088 and ZR2021QA074), the Taishan Scholars Program of Shandong Province, China (Grant No. tsqn201812104), and the State Key Laboratory of Nuclear Physics and Technology at Peking University, China.
Mei Qiao(乔梅), Tie-Jun Wang(王铁军), Yong Liu(刘泳), Tao Liu(刘涛), Shan Liu(刘珊), and Shi-Cai Xu(许士才) Surface structure modification of ReSe2 nanosheets via carbon ion irradiation 2023 Chin. Phys. B 32 026101
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