在本文中,主要著眼於無機僅寫一次型光碟記錄層材料之研究。我們採用Zn/Ge雙層薄膜材料當作無機僅寫一次型的記錄層材料。根據實驗室之前的研究,我們可以發現Zn/Ge雙層薄膜結構的相變溫度為385 ℃。再觀察TEM與XRD的結果,可以發現Zn/Ge記錄膜有明顯的變化。接著優化各膜層的厚度,並經由動態測試儀的測試來獲得較佳的載噪比。我們發現經過一系列優化後的碟片,在藍光雷射記錄前後的光學對比度可達68.44%。再透過原子力顯微鏡對碟片基板進行表面形貌觀察,發現基板並未因雷射光記錄後而造成破壞。因此,Zn/Ge雙層薄膜有潛力作為藍光僅寫一次型光碟之記錄層材料。
In this study, we focused our interests on inorganic recording materials for write-once optical disc. We adopted Zn/Ge bilayer as the recording material for the disc. For our previous work in this laboratory, we found that the phase-transition temperature of Zn/Ge bilayer is 385 ℃. According to the results obtain from TEM and XRD, we found that Zn/Ge recording media has distinct changed. To optimize layer structure to obtain better performance, the carry to noise ratio (CNR) obtained by dynamic tester need to be over 45 dB. Through a series of optimization for layer structure, we found that the optical contrast of the disc was over 68.44% with blue laser illuminating. By viewing the surface of the substrate, we found that the substrate could not be destroyed through blue laser illumination. In this thesis, the experimental results showed that the Zn/Ge bilayer is very potential for write-once disc under blue laser illumination.