VISIBLE PHOTOLUMINESCENCE FROM HYDROGENATED AMORPHOUS-CARBON FILMS PREPARED BY PULSED-LASER ABLATION OF POLYMETHYL METHACRYLATE (PMMA)

Authors
LI ZF YANG ZY XIAO RF
Citation
Zf. Li et al., VISIBLE PHOTOLUMINESCENCE FROM HYDROGENATED AMORPHOUS-CARBON FILMS PREPARED BY PULSED-LASER ABLATION OF POLYMETHYL METHACRYLATE (PMMA), Applied physics A: Materials science & processing, 63(3), 1996, pp. 243-246
Citations number
23
Categorie Soggetti
Physics, Applied
Journal title
Applied physics A: Materials science & processing → ACNP
ISSN journal
09478396
Volume
63
Issue
3
Year of publication
1996
Pages
243 - 246
Database
ISI
SICI code
0947-8396(1996)63:3<243:VPFHAF>2.0.ZU;2-0
Abstract
Visible photoluminescence (PL) has been observed from the hydrogenated amorphous carbon (a-C:H) films prepared by ArF pulsed laser ablation of polymethyl methacrylate (PMMA) in the presence of hydrogen gas (H-2 ). With increasing hydrogen concentration the PL intensity increases a nd the intensity maximum blue-shifted. The PL intensity also increases after hours of light illumination, exhibiting a light soaking enhance ment. Increasing the deposition temperature decreases the PL and incre ases the ratio of sp(3)/sp(2) bonds.