Spectroscopic and thermal properties of metallized azo dyes for digital versatile disc-recordable

Bin Wei; Yaorong Feng; Yiqun Wu; Fuxi Gan

doi:10.1117/12.649795

15 September 2005 Spectroscopic and thermal properties of metallized azo dyes for digital versatile disc-recordable

Bin Wei, Yaorong Feng, Yiqun Wu, Fuxi Gan

Proceedings Volume 5966, Seventh International Symposium on Optical Storage (ISOS 2005); 59661O (2005) https://doi.org/10.1117/12.649795
Event: Seventh International Symposium on Optical Storage (ISOS 2005), 2005, Zhanjiang, China

Abstract

Three kinds of novel metallized azo dyes based on 4-methylthiazole, 5-methyl-3-isoxazole and 5-methyl-1,3,4-thiadiazole were synthesized in order to obtain a suitable optical recording medium for digital versatile disc-recordable(DVD-R). The absorption spectra, optical constants and thermal decomposition as well as red-light (650nm) static recording properties of three nickel-azo dye films were investigated. Particularly, the nickel-azo dye film based on 5-methyl-1,3,4-thiadiazole, peaking at 554nm and 602nm, with higher refractive index (n=2.41) and lower extinction coefficient (k=0.042) at the wavelength 650nm and a sharp threshold of thermal decomposition at 335°C was obtained. The results of the red-light(650nm) static optical recording test of this dye film indicated that higher reflectivity contrast of 35% can be obtained at a laser writing power of 7.5mW and pulse width of 200ns. These results imply the nickel-azo dye based on 5-methyl-1,3,4-thiadiazole is a promising candidate as a recording medium of DVD-R.

Citation Download Citation

Bin Wei, Yaorong Feng, Yiqun Wu, and Fuxi Gan "Spectroscopic and thermal properties of metallized azo dyes for digital versatile disc-recordable", Proc. SPIE 5966, Seventh International Symposium on Optical Storage (ISOS 2005), 59661O (15 September 2005); https://doi.org/10.1117/12.649795

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