Product Code: ICAL07_P555

Development of a Laser-Induced Material Transfer Technique for Patterning of CNT Emitters
Authors:
Chung-Wei Cheng, Industrial Technology Research Institute; Tainan County Taiwan
Shih-Chieh Liao, Industrial Technology Research Institute; Taiwan Taiwan
Hui-Ta Chen, Industrial Technology Research Institute; Tainan County Taiwan
Jeng-Rong Ho, National Chung Cheng University; Chia-Yi Taiwan
Hung-Yu Liao, National Chung Cheng University; Chia-Yi Taiwan
J-W John Cheng, National Chung Cheng University; Chia-Yi Taiwan
Presented at ICALEO 2007

A laser-induced forward transfer (LIFT) technique is developed for the patterning of carbon nanotube (CNT) emitters under ambient pressure and temperature conditions. In the proposed approach, a 1064 nm Nd:YAG pulsed laser beam is passed through a transparent support substrate coated with a thin CNT film with a thickness of 2.5 μm. The laser fluence of 1.96 J/cm2 causes the CNTs to be transferred onto an acceptor substrate without causing any damage to the support substrate. Preliminary field emission tests of CNT patterns deposited on a silver paste layer confirm the effectiveness of the proposed patterning approach.