Na Zhang, Bo Liu, Li-Wei Lin. Effect of He ion irradiation on microstructure and electrical properties of graphene [J]. Acta Physica Sinica, 2020, 69(1): 016101-1
- Acta Physica Sinica
- Vol. 69, Issue 1, 016101-1 (2020)
Fig. 1. XPS C1 s peak spectra of graphene samples: (a) Unirradiated; (b) 0.7 × 1013 He+/cm2; (c) 1.6 × 1013 He+/cm2; (d) 2.5 × 1013 He+/cm2.
石墨烯样品XPS C1 s峰谱图 (a)未辐照; (b) 0.7 × 1013 He+/cm2; (c) 1.6 × 1013 He+/cm2; (d) 2.5 × 1013 He+/cm2
Fig. 2. The Raman spectra of unirradiated graphene.未辐照石墨烯Raman光谱图
Fig. 3. The Raman spectra of graphene before and after He+ irradiation.
He+辐照前后石墨烯Raman光谱图
Fig. 4. The relationship between Raman peak strength I D/I G, I 2D/I G ratio and irradiation dose.
Raman峰强I D/I G, I 2D/I G比值与辐照剂量的关系
Fig. 5. Electrical conductivity versus gate voltage at different irradiation doses.不同辐照剂量下电导率随栅极电压变化曲线
Fig. 6. The relation between Dirac voltage variation and irradiation dose.狄拉克电压偏移量与辐照剂量的关系
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Table 1. C1 s peak area ratio of graphene samples before and after irradiation.
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