Optical and Thermal Properties of Nickel-Azo Dyes for Digital Versatile Disc-Recordable |
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作者姓名: | 魏斌 吴谊群 顾冬红 千福熹 |
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作者单位: | ShanghaiInstituteofOpticsandFineMechanics,ChineseAcademyofSciences,POBox800-211,Shanghai201800 |
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摘 要: | We investigate the absorption spectra, optical constants and thermal decomposition as well as red-light (650nm) static recording properties of three novel nickel-azo dye films based on 4-methylthiazole, beuzothiazole and 6-methylbenzothiazole. Particularly, we obtain the nickel-azo complex film based on 4-methylthiazole, peaking at 562nm and 613nm, with higher refractive index (n = 2.46) and lower extinction coefficient (k = 0.18) at the wavelength 650nm and a sharp threshold of thermal decomposition at 330℃. 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 5.9mW and pulse width of 350ns. These results imply that the nickel-azo complex based on 4-methvlthiazole is a uromising candidate for a recordinz medium of digital versatile disc-recordable.
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关 键 词: | 镍-偶氮染料薄膜 光学性质 热学性质 吸收光谱 光学记录材料 |
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