| 摘要 |
PURPOSE:To obtain a high-sensitivity optical recording layer which enables satisfactory information recording to be achieved even with a small-type low- output semiconductor layer, by providing a thin film of a specified chalcogenide and an organic coloring matter capable of sensitizing the thin film. CONSTITUTION:The thin chalcogenide film, which functions as a recording medium, comprises a Group 6B metal or a combination of at least 50% of a Group 6B metal and less than 50% of a Group 5B metal and/or a metal of other Group. An organic coloring matter which can be advantageously used for sensitization is, for example, a phthalocyanine coloring matter, has a quite large absorption, is chemically stable and has favorable orientation property. |
