采用液相剥离法,以石墨粉末为原料,在有机溶剂中直接超声剥离,通过高速离心后得到质量较高的石墨烯分散液.利用喷涂法,在柔性基底(PET)上制备石墨烯透明导电薄膜.借助SEM、四探针等表征方法,研究不同有机溶剂和不同基底处理对薄膜表面形貌和光电性能的影响.结果表明:使用DMF作为分散剂制备的石墨烯没有引入其他官能团,结构缺陷少;在基底上做一层银金属栅网,可以有效降低薄膜的方片电阻,在透过率(λ=550 nm)为81%时,方块电阻降低为172 Ω/□,这种新型石墨烯/银金属栅网柔性透明导电薄膜有望取代市场主流ITO薄膜.
参考文献
[1] | Zhao J,Pei S,Ren W,et al.Efficient preparation of large area graphene oxide sheets for transparent conductive films[J].ACS Nano,2010,4(9):5245-5252. |
[2] | Cao Q,Rogers O J A.Ultrathin films of single walled carbon nanotubes for electronics and sensors:a review of fundamental and applied aspects[J].Adv.Mater.,2009,21(1):29-53. |
[3] | 庞渊源.石墨烯在半导体光电器件的应用[J].液晶与显示,2011,26(3):296-300. |
[4] | Chongmin L,Jaehui A,Ki B L,et al.Graphene-based flexible NO2 chemical sensors[J].Thin Solid Films,2012,520(16):5459-5462. |
[5] | Helena G,I-Chun C,Sigurd W,etal.Mechanics of thin-film transistors and solar cells on fiexible substrates[J].Solar Energy,2006,80(6):687-693. |
[6] | Ju S,Facchetti A,Xuan Y,et al.Fabrication of fully transparent nanowire transistors for transparent and flexible electronics[J].Nat.Nanotech.,2007,2(6):378-384. |
[7] | Sekitani T,Nakajima H,Maeda H,et al.Stretchable active-matrix organic light-emitting diode display using printable elasticcondoctors[J].Nat.Mater.,2009,8(6):494-499. |
[8] | Geim A K,Novoselov K S.The rise of graphene[J].Nat.Mater.,2007,6(3):183-191. |
[9] | Nair R R,Blake P,Grigorenko A N,et al.Fine structure constant defines visual transparency of graphene[J].Science,2008,320(5881):1308-1311. |
[10] | Lee C,Wei X D,Kysar J W,et al.Measurement of the elastic properties and intrinsic strength of monolayer gra phene[J].Science,2008,321(5887):385-388. |
[11] | Geim A K.Graphene:status and prospects[J].Science,2009,324(5934):1530-1534. |
[12] | Novoselov K S,Geim A K,Morozcv S V,et al.Electric field effect in atomically thin carbon films[J].Science,2004,306(2):666-669. |
[13] | Berger C,Song Z,Li X,et al.Electronic confinement and coherence in patterned epitaxial graphene[J].Science,2006,312(5777):1191-1196. |
[14] | Subrahmanyam K S,Govindaraj A,Rao C N R,et al.Simple method of preparing graphene flakes by an arc dis charge method[J].Phys.Chem.C,2009,113(11):4257-4260. |
[15] | Schniepp H C,Li J L,Mcallister M J,et al.Functionalized single graphene sheets derived from splitting graphite oxide[J].J.Phys.Chem.B,2006,110(17):8535-8539. |
[16] | Wei Z,Paui S,Brian H,et al.Wafer-scale reduced graphene oxide flms for nano mechanical devices[J].Nano Lett.,2008,8(10):3441-3445. |
[17] | Gao W,Aiemany L B,Ci L J,et al.New insights into the structure and reduction of graphite oxide[J].Nat.Chem.,2009,1(5):403-408. |
[18] | Bae S,Kim H,Lee Y,et al.Roll to roll production of 30-inch graphene films for transparent electrodes[J].Nat.Nanotech.,2010,5(8):574-578. |
[19] | Aibert D,Velimir R,Zonghoon L,et al.Substrate-free gas-phase synthesis of grapheme sheets[J].Nano Lett.,2008,8(7):2012-2016. |
[20] | Reina A,Jia x T,Ho J,et al.Large Area,few-layer graphene films on arbitrary substrates by chemical vapor deposition[J].NanoLett.,2009,9(1):30-35. |
[21] | Mohammad C,Pall T,John A S.Gram-scale production of graphene based on solvothermal synthesis and sonication[J].Nat.Nanotech.,2009,4(11):30-33. |
[22] | Hernandez Y,Nicolosi V,Lotya M,et al.High-yield production of graphene by liquid-phase exfoliafion of graphite[J].Nat.Nanotech.,2008,3(9):563-568. |
[23] | Pham V H,Cuong T V,Hur S H,et al.Fast and simple fabrication of a large transparent chemically-converted graphene film by spray-coating[J].Carbon,2010,48(7):1945-1951. |
[24] | Nair R R,Blake P,Grigorenko A N,et al.Fine structure constant defines visual transparency of graphene[J].Science,2008,320(6):1308-1314. |
[25] | Cai W,Zhu Y,Li X,et al.Large area few-layer graphene/graphite films as transparent thin conducting electrodes[J].Appl.Phys.Lett.,2009,95(12):123115-123118. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%