[1] Weiss N O, Zhou H L, Liao L, Liu Y, Jiang S, Huang Y, Duan X F[J]. Adv. Mater., 24, 5782(2012).

[2] Lee C, Wei X D, Kysar J W, Hone J[J]. Science, 321, 385(2008).

[3] Yu W, Niu C, Zhu Z, Wang X, Zhang W B[J]. J. Mater. Chem. C, 4, 6581(2016).

[4] Kuang W, Hu R, Fan Z, Zhang Z[J]. Nanotechnology, 30, 145201(2019).

[5] Yu W W, Chen X A, Mei W, Chen C S, Tsang Y H[J]. Appl. Surf. Sci., 400, 129(2017).

[6] Hu R, Li Y H, Zhang Z H, Fan Z Q, Sun L[J]. J. Mater. Chem. C, 7, 7745(2019).

[7] Sheng Y, You Y, Cao Z, Liu L, Wu H[J]. Analyst, 143, 2411(2018).

[8] Chen C S, Yu W W, Liu T G, Cao S Y, Tsang Y H[J]. Sol. Energy Mater. Sol. Cells, 160, 43(2017).

[9] Magda G Z, Jin X, Hagy I, Vancsó P, Osváth Z, Nemes P, Hwang C P, Biró L, Tapasztó L[J]. Nature, 514, 608(2014).

[10] Ding Y, Ni J[J]. Appl. Phys. Lett., 95, 083115(2009).

[11] Pan H, Zhang Y W[J]. J. Mater. Chem., 22, 7280(2012).

[12] Yuan P F, Hu R, Fan Z Q, Zhang Z H[J]. J. Phys. Condens. Matter, 30, 445802(2018).

[13] Liu W, Deng X, Cai S[J]. AIP Adv., 6, 075103(2016).

[14] Chen Q, Tang L, Chen K, Zhao H[J]. J. Appl. Phys., 114, 084301(2013).

[15] Zhu Z, Zhang Z H, Wang D, Deng X Q, Fan Z Q, Tang G P[J]. J. Mater. Chem., 3, 9657(2015).

[16] Zhang H, Meng S, Yang H[J]. J. Appl. Phys., 117, 112108(2015).

[17] Wu M, Wu X, Zeng X C[J]. J. Phys. Chem. C, 114, 3937(2010).

[18] Zhu Z L, Li C, Yu W, Chang D, Sun Q, Jia Y[J]. Appl. Phys. Lett., 105, 113105(2014).

[19] Lei S, Ge L, Najmaei S[J]. ACS Nano, 8, 1263(2014).

[20] Ho C H[J]. 2D Mater., 3, 025019(2016).

[21] Mudd G W, Molas M R, Chen X, Zólyomi V[J]. Sci. Rep., 6, 39619(2016).

[22] Bandurin D A, Tyurnina A V, Yu G L[J]. Nat. Nanotechnol., 12, 223(2016).

[23] Wu M, Shi J, Zhang M, Ding Y, Wang H, Cen Y, Guo W, Pan S, Zhu Y[J]. Nanotechnology, 29, 205708(2018).

[24] Yao A L, Wang X F, Liu Y S, Sun Y N[J]. Nanoscale Res. Lett., 13, 107(2018).

[25] Zhou W, Yu G, Rudenko A N, Yuan S[J]. Phys. Rev. Mater., 2, 114001(2018).

[26] Brandbyge M, Mozos J L, Ordejón P, Taylor J, Stokbro K.[J]. Phys. Rev. B, 65, 165401(2002).

[27] Taylor J, Guo H, Wang J[J]. Phys. Rev. B, 63, 245407(2001).

[28] Chen S, Zhou W, Yu J, Chen K Q[J]. Carbon, 129, 809(2018).

[29] Deng Y, Chen S, Zeng Y, Feng Y, Zhou W, Tang L, Chen K[J]. Org. Electron., 63, 310(2018).

[30] Yuan J, Zhang L W, Liew K M[J]. Curr. Nanosci., 12, 636(2016).

[31] Zhang H L, Sun L, Han J N[J]. Acta Phys. Sin., 66, 246101(2017).

[32] Zuo B M, Yuan J M, Feng Z, Mao Y L[J]. Acta Phys. Sin., 68, 113103(2019).

[33] Kang H S, Jeong S[J]. Phys. Rev. B, 70, 233411(2004).