[00113562]荧光读出的可擦重写相变光盘

一种荧光读出的可擦重写相变光盘,该光盘包括上保护层、记录层、下保护层和盘基,其特征在于所述的记录层是荧光相变记录层,所述的荧光相变记录层是由厚度10～200nm的BiSb掺杂Sb2Te3?GeTe薄膜或NiO掺杂Sb2Te3?GeTe薄膜构成。该光盘既保留了常规相变光盘写擦速度快、数据保持力强和循环稳定性高的特点,同时大大提高了读出性噪比。且由于不是反射式读出,不需要额外的金属反射层,比常规相变光盘的膜层结构更加简单。 | An erasable rewriting phase change optical disk capable of being subjected to fluorescent read comprises an upper protective layer, a recording layer, a lower protective layer and a disk base, and is characterized in that the recording layer is a fluorescent phase change recording layer; the fluorescent phase change recording layer is formed by mixing an Sb2Te3-GeTe film into BiSb of which the thickness is 10-200 nm or mixing the Sb2Te3-GeTe film into NiO of which the thickness is 10-200 nm. The optical disk reserves the characteristics of quick writing and erasing speed, strong data retentivity and high cycling stability of the conventional phase change optical disk, and meanwhile the signal-to-noise ratio of reading is greatly improved. The reading is not reflective reading, no extra metal reflecting layer is needed, and the structure of the film is simpler as compared with the conventional phase change optical disk。