Other
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5578..620p&link_type=abstract
Photonics North 2004: Optical Components and Devices. Edited by Armitage, John C.; Fafard, Simon; Lessard, Roger A.; Lampropoul
Other
Scientific paper
A laser direct write process has been developed for turning patterned bimetallic Sn/In film into a indium tin oxide layer. Sn over In films (15-120nm thick) with a 1:10 thickness ratio were deposited by DC sputtering. An argon laser beam (0.1 -0.9 W, spot size: 2 micron, scan speed: 1 cm/s) exposes the film into patterns. These Sn/In films' optical absorption changed from 3 OD at deposition to 0.24 OD after exposure (at 356 nm). XRD, SEM, EDX, and Auger have been used to investigate the film's microstructure and composition suggesting ITO like characteristics. XRD indicated a preferred In2O3 (222) orientation which is similar to ITO films deposited by other methods. Four-point probe tests showed a converted film resistivity of 0.26x10-3 to 9.7x10-3 ohm-cm depending on the laser power and Sn concentration. Hall tests indicated that the bulk carrier concentration was in the range of 1018 to 1020 cm-3. Developed in a wet HCl: H2O2: H2O =1:1:48 solution removes unexposed Sn/In leaving patterned ITO films created at much lower laser power levels than needed for ablative patterning of ITO. Developed films are also resistant to KOH anisotropic etching at a 1:700 ratio producing <111> trenches in Si (100). The large change in optical density means Sn/In films can be used as a material of the direct write photomasks.
Chapman Glenn H.
Peng Jun
Tu Yuqiang
No associations
LandOfFree
Laser direct write patterned indium tin oxide films for photomasks and anisotropic resist applications does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Laser direct write patterned indium tin oxide films for photomasks and anisotropic resist applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser direct write patterned indium tin oxide films for photomasks and anisotropic resist applications will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1473805