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Effective Laser Sealing Enabled by Glass Thick Films Containing Carbon Black/Carbon Nanotubes
Author(s) -
Kwon Oh Hyeon,
Mohanty Bhaskar Chandra,
Yeon Deuk Ho,
Yeo JongSeok,
Lee Kyoungho,
Cho Yong Soo
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12263
Subject(s) - materials science , carbon nanotube , carbon black , composite material , laser , transmittance , soda lime glass , carbon fibers , absorption (acoustics) , optoelectronics , optics , composite number , natural rubber , physics
An effective way of providing complete sealing of glass using an 810 nm diode laser was investigated for longer lifetime of glass panel‐based devices. Small amounts (<5 wt%) of laser‐absorbing materials such as carbon black ( CB ) or carbon nanotubes ( CNT ) were added to a bismuth zinc borate glass paste for instantaneous adhesion between glass substrates without interfacial cracks or severe pores. A higher laser power was required for a lower content of carbon for the laser‐assisted sealing of glass. As optimal compositions, the addition of 1.0 wt% CB or 0.5 wt% CNT led to complete densification of glass with higher optical transmittance. Higher absorption coefficients calculated in the CNT case, e.g., ~536.4 cm −1 for the 0.5 wt% CNT sample compared to ~277.6 cm −1 for the 0.5 wt% CB sample, are believed to be responsible for the effective sealing even with a lower content of CNT .