| Original Articles |
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Optical and Thermal Properties of Nickel-Azo Dyes for Digital Versatile Disc-Recordable |
| WEI Bin;WU Yi-Qun;GU Dong-Hong;GAN Fu-Xi |
| Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, PO Box 800-211, Shanghai 201800 |
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| Cite this article: |
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WEI Bin, WU Yi-Qun, GU Dong-Hong et al 2003 Chin. Phys. Lett. 20 1517-1519 |
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Abstract We investigate the absorption spectra, optical constants and thermal decomposition as well as red-light (650 nm) static recording properties of three novel nickel-azo dye films based on 4-methylthiazole, benzothiazole and 6-methylbenzothiazole. Particularly, we obtain the nickel-azo complex film based on 4-methylthiazole, peaking at 562 nm and 613 nm, with higher refractive index (n = 2.46) and lower extinction coefficient (k = 0.18) at the wavelength 650 nm and a sharp threshold of thermal decomposition at 330°C. The results of the static optical recording test of this dye film indicate that high reflectivity contrast of 51% can be observed at a laser writing power of 5.9 mW and pulse width of 350 ns. These results imply that the nickel-azo complex based on 4-methylthiazole is a promising candidate for a recording medium of digital versatile disc-recordable.
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| Keywords:
42.70.Ln
78.20.Ci
78.66.Qn
81.70.Pg
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Published: 01 September 2003
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| PACS: |
42.70.Ln
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(Holographic recording materials; optical storage media)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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78.66.Qn
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(Polymers; organic compounds)
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81.70.Pg
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(Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis)
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