한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Effect of PbO on the Field Emission Characteristics of Carbon Nanotube Paste

  • Kim, Jun-Seop (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Goak, Jeung-Choon (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Lee, Han-Sung (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Jeon, Ji-Hyun (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Kim, Jin-Hee (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Lee, Yeon-Ju (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University) ;
  • Hong, Jin-Pyo (New Functional Material and Device Laboratory, Department of Physics, Hanyang University) ;
  • Lee, Nae-Sung (Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University)
  • Published : 2006.08.22
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Abstract

In the CNT paste for field emission, PbO frit had a fatal influence on CNTs by accelerating a decomposition of CNTs during firing. In the thermogravimetric analysis on the mixtures of CNTs and other ingredients, it was evident that CNTs began to burn out at ${\sim}350^{\circ}C$ by reacting with PbO. This problem was overcome by replacing the PbO frit by the Pb-free frit such that most of CNTs could survive during firing. Consequently, the emission current of the CNT paste prepared using the lead-free frit was improved as much as 250 %, compared to the PbO-containing one. The CNT paste was further optimized by adding a dispersant, whose dispersibility was assessed by measuring the resistance of the paste. With 10% dispersant added, the emission properties of the paste was greatly enhanced as 50 times higher as those of the paste without a dispersant.

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