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Carbon nanotube (CNT) cathode with an indium tin oxide (ITO)/Ti composite electrode is successfully fabricated using both magnetron sputtering technology and screen-printed technology which can improve adhesive performance between electrode and CNT cathode of transplanted-type CNT cold cathode, thus eliminating the effects of interface barrier and non-ohmic contact on field emission uniformity and stability of CNT cathode. Microstrcture of ITO/Ti-based CNT cathode is studied by X-ray diffraction and field emission scanning electron microscopy. The results show that TiC phase forms in ITO/Ti-based CNT cathode, thereby a strong interaction system is created between CNT and Ti substrate which reduces, or even eliminates the interface barrier between electrode and CNT, and increases the probability of forming ohmic contact. The resistivity measurement by four probe technology shows that the ITO/Ti-based CNT cathode has performance of resistances in parallel and electric conductivity of CNT cathode increases. Characteristic test of ITO/Ti-based CNT cathode shows that field emission current reaches 384 μA/cm2 which significantly increases compared with that of ITO-based CNT cathode, and that the tested anode can be induced to emit stable, uniform and high luminance. So the ITO/Ti composite electrode is an effective way to make a CNT cathode with stable and uniform field emission and low power.
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Keywords:
- carbon nanotube /
- cold cathode /
- field emission /
- uniformity
[1] Guo P S,Chen T,Cao Z Y,Zhang Z J,Chen Y W,Sun Z 2007 Acta Phys. Sin. 56 6705 (in Chinese) [郭平生、陈 婷、曹章轶、张哲娟、陈奕卫、孙 卓 2007 56 6705]
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[14] Andriotis A N,Menon M,Froudakis G E,Lowther J E 1999 Chem. Phys. Lett. 301 503
[15] Tachibana T,Williams B E,Glass J T 1992 Phys. Rev. B 45 11975
[16] Qin Y X,Hu M 2008 Appl. Surf. Sci. 254 3313
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[1] Guo P S,Chen T,Cao Z Y,Zhang Z J,Chen Y W,Sun Z 2007 Acta Phys. Sin. 56 6705 (in Chinese) [郭平生、陈 婷、曹章轶、张哲娟、陈奕卫、孙 卓 2007 56 6705]
[2] Gu G R,Ito T 2009 Chin. Phys. B 18 4547
[3] Song J H,Zhang G M,Zhang Z X,Sun M Y,Xue Z Q 2004 Acta Phys. Sin. 53 4392 (in Chinese) [宋教花、张耿民、张兆祥、孙明岩、薛增泉 2004 53 4392]
[4] Ma Y P,Shang X F,Gu Z Q,Li Z H,Wang M,Xu Y B 2007 Acta Phys. Sin. 56 6701 (in Chinese) [马燕萍、尚学府、顾智企、李振华、王 淼、徐亚伯 2007 56 6701]
[5] Park J H,Son G H,Moon J S,Han J H,Berdinsky A S,Kuvshinov D G,Yoo J B,Park C Y 2005 J. Vac. Sci. Technol. B 23 749
[6] Park G G,Sohn Y J,Yim S D,Yang T H,Yoon Y G,Lee W Y,Eguchi K,Kim C S 2006 J. Power Sour. 163 113
[7] Bachtold A,Henny M,Terrier C,Strunk C,Schonenberger C 1998 Appl. Phys. Lett. 73 274
[8] Xue Y Q,Datta S 1999 Phys. Rev. Lett. 83 4844
[9] Tombler T W,Zhou C W,Alexseyev L,Kong J,Dai H J,Liu L,Jayanthi C S,Tang M J,Wu S Y 2000 Nature 405 769
[10] Kong K,Han S,Ihm J 1999 Phys. Rev. B 60 6074
[11] Menon M,Andriotis A N,Froudakis G E 2000 Chem. Phys. Lett. 320 425
[12] Andriotis A N,Menon M,Froudakis G E 2000 Appl. Phys. Lett. 76 3890
[13] Andriotis A N,Menon M 1999 Phys. Rev. B 60 4521
[14] Andriotis A N,Menon M,Froudakis G E,Lowther J E 1999 Chem. Phys. Lett. 301 503
[15] Tachibana T,Williams B E,Glass J T 1992 Phys. Rev. B 45 11975
[16] Qin Y X,Hu M 2008 Appl. Surf. Sci. 254 3313
[17] Qin Y X,Hu M 2008 Acta Phys. Sin. 57 3698 (in Chinese) [秦玉香、胡 明 2008 57 3698]
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