[1] Novoselov K S, Geim A K, Morozov S V, Jiang D, Katsnelson M I, Grigorieva I V, Dubonos S V, Firsov A A 2005 Nature 438 197
[2] Splendiani A, Sun L, Zhang Y B, Li T S, Kim J, Chim C Y, Galli G, Wang F 2010 Nano Lett. 10 1271
[3] Sun Y F, Gao S, Xie Y 2014 Chem. Soc. Rev. 43 530
[4] Ribeiro R M, Pereira Vitor M, Peres N M R, Briddon P R, Castro Neto A H 2009 New J. Phys. 11 115002
[5] Kim S C, Yang S R E 2014 Ann. Phys. 347 21
[6] Chen K, Wang X M, Xu J B, Pan L J, Wang X R, Shi Y 2012 J. Phys. Chem. C 116 6259
[7] Dutta S, Manna A K, Pati S K 2009 Phys. Rev. Lett. 102 194
[8] Elias D C, Nair R R, Mohiuddin T M G, Morozov S V, Blake P, Halsall M P, Ferrari A C, Boukhvalov D W, Katsnelson M I, Geim A K, Novoselov K S 2009 Science 323 610
[9] Gao N, Zheng W T, Jiang Q 2012 Phys. Chem. Chem. Phys. 14 257
[10] Zhang S L, Yan Z, Li Y F, Chen Z F, Zeng H B 2015 Angew. Chem.-Int. Edit. 54 3112
[11] Kamal C, Ezawa M 2015 Phys. Rev. B 91 085423
[12] Akturk O U, Ozcelik V O, Ciraci S 2015 Phys. Rev. B 91 235446
[13] Li Y, Chen X 2014 2D Mater. 1 031002
[14] Zhang S L, Hu Y H, Hu Z Y, Zeng H B 2015 Appl. Phys. Lett. 107 022102
[15] Wang Y P, Ji W X, Zhang C W, Li P, Li F, Ren M J, Chen X L, Yuan M, Wang P J 2015 Sci. Rep. 6 20342
[16] Tang W C, Sun M L, Ren Q Q, Wang S K, Yu J 2016 Appl. Surf. Sci. 376 286
[17] Song Z G, Liu C C, Yang J B, Han J Z, Ye M, Fu B T, Yang Y C, Niu Q, Lu J, Yao Y G 2014 NPG Asia Mater. 6 e147
[18] L H Y, Liu H J, Tan X J, Pan L, Wen Y W, Shi J, Tang X F 2012 Nanoscale 4 511
[19] Cho H S, Shi D L, Guo Y, Lian L, Ren Z F, Poudel B, Song Y, Abot J L, Singh D, Routbort J, Wang L M, Ewing R C 2008 J. Appl. Phys. 104 074302
[20] Kresse G, Furthmller J 1996 Phys. Rev. B 54 11169
[21] Perdew J P, Wang Y 1991 Phys. Rev. B 45 13244
[22] Blöchl P E 1994 Phys. Rev. B 50 17953
[23] Monkhorst H J, Pack J D 1976 Phys. Rev. B 13 5188
[24] Wang J Y, Deng S B, Liu Z F, Liu Z R 2015 Natl. Sci. Rev. 2 22
[25] Huang Y P, Yuan J M, Guo G, Mao Y L 2015 Acta Phys. Sin. 64 013101(in Chinese)[黄艳平, 袁健美, 郭刚, 毛宇亮2015物理学报64 013101]
[26] Ribeiro R M, Pereira V M, Peres N M R, Briddon P R, Neto A H C 2009 New J. Phys. 11 115002
[27] Zhang R W, Zhang C W, Ji W X, Li S S, Yan S S, Hu S J, Li P, Wang P J, Li F 2016 Sci. Rep. 6 18879
[28] Zhang R W, Zhang C W, Ji W X, Li S S, Hu S J, Yan S S, Li P, Wang P J, Li F 2015 New J. Phys. 17 083036