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One time write-in-type blue light storing inorganic medium and method for making same

An inorganic medium and blue light technology, applied in the field of optical storage, can solve the problems of optical contrast reduction and achieve high optical contrast and stability

Inactive Publication Date: 2009-07-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it was found in the study that although with SbO x As the oxygen content in the film increases, the crystallization activation energy of the film increases and the stability increases, but at the same time the optical contrast decreases (Physica B.352(2006)206)
Therefore, the stability and optical contrast of the film become a contradiction. How to improve the stability of the film on the premise of ensuring a high optical contrast of the film is a challenge

Method used

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  • One time write-in-type blue light storing inorganic medium and method for making same
  • One time write-in-type blue light storing inorganic medium and method for making same

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Embodiment 1

[0019] Sb-Sb of the present invention 2 o 3 -SiO 2 Composite thin film, with the molar ratio of Sb and Si being 3:1 as the sputtering target, the background vacuum is 7×10 -4 Pa, the flow ratio of oxygen to argon is 7%, the flow of argon is 70sccm, the sputtering pressure is 0.6Pa, the sputtering power is 150W, and the sputtering time is 3min, the required Sb-Sb 2 o 3 -SiO 2 Composite film whose composition is Sb 3.1 Si 0.9 o 3.8 , namely Sb 0.52 (Sb 2 o 3 ) 0.21 (SiO 2 ) 0.27 . Through thermal and experimental analysis of materials, it is known that Sb 0.52 (Sb 2 o 3 ) 0.21 (SiO 2 ) 0.27 The crystallization temperature of Sb in the film is 190°C, Sb-Sb 2 o 3 -SiO 2 The recording mechanism of the composite film is based on the change of optical properties caused by the crystallization of amorphous Sb. Sb-Sb 2 o 3 -SiO 2 For the blue light static test performance of the composite film, see figure 1 with figure 2 . As can be seen from the figure, Sb...

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Abstract

A one-off blue-light storage inorganic medium and a manufacturing method thereof are provided. The one-off blue-light storage inorganic medium is a Sb-Sb2O3-SiO2 composite thin film which is prepared on a substrate by stibium Sb and silicon Si through a reactive magnetron sputtering method, and which comprises three components of Sb, Sb2O3 and SiO2, wherein the mol percent of Sb is 10%-70%, the mol percent of Sb2O3 is 10%-40%, the mol percent of SiO2 is 20%-80%. The blue-light storage inorganic medium of the invention prepared by the reactive magnetron sputtering method has a high optical contrast and stability before and after layer action.

Description

technical field [0001] The invention belongs to the technical field of optical storage, and relates to a write-once blue light storage medium and a preparation method thereof, using Sb-Sb 2 o 3 -SiO 2 The composite film acts as the recording layer of the Blu-ray recordable disc. This material can undergo a phase change under the action of blue light to cause a change in optical properties, thereby achieving the purpose of information storage. Background technique [0002] In recent years, the digital TV industry has developed rapidly, and major industrial countries have formulated plans to replace analog TV with digital TV. In the five-year plan of my country's information industry, digital TV is also an important development direction. In digital TV, high-definition is the direction of the industry's efforts. As early as the National Day military parade in 1999, China carried out the experimental broadcasting of high-definition television, and will realize the populariz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/243G11B7/26G11B7/2433
Inventor 周莹耿永友顾冬红朱青蒋志
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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