Examination of Possibility of Formation of Aggregated Color Centers in Inorganic Glasses and Their Application to Photochemical Hole Burning

无机玻璃中聚集色心形成的可能性及其在光化学烧孔中的应用

• 批准号: 01550597
• 负责人: HOSONO Hideo
• 金额: $ 1.28万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550597/
• 关键词: Point defect; photochromism; calcium aluminate glass; vacancy; ion implantation oxygen; 感光性ガラス; カルシウムアルミネ-トガラス; F中心

Aggregated F-centers such as M and R-centers show photochemical hole burning (PHB) in alkali halide crystals. If aggregated oxygen-deficient type point defects are produced in inorganic glasses, we may expect a possibility that PHB is realized in inorganic glasses without accompanying doping of a dye molecule as a PHB center. In this study, we examined the formation of aggregated color centers in inorganic glasses and of a pertinent hole in their optical absorption bands with a tunable laser light.The results obtained are summarized as follows :(1) Calcium aluminate glasses melted in strongly reduced atmosphere were found to show photochromism. Light-induced EPR led the conclusion that the photochromic center is an electron trapped at the site of oxygen vacancy surrouned by Ca^<2+> ions, i. e., likeF^+ center in CaO. No spectral hole formation was observed when the laser light illuminated the absorption band centered around 560 nm at 4.2K.(2) Two types of oxygen-deficient defects were produced in SiO_2 glass by implantation of Si^+orP^+, Si-Si bonds and neutral oxygen vacancies. Their concentrations are compatible to those of implanted ions, suggesting that implanted ions react chemically with oxygen in the substrate structure leaving oxygen deficiency defects. No zoro-phonon line was observed for either of these defects.

聚集的F-中心，如M和R-中心，在碱金属卤化物晶体中表现出光化学空穴燃烧（PHB）。如果在无机玻璃中产生聚集的缺氧型点缺陷，我们可以预期在无机玻璃中实现PHB而不伴随染料分子作为PHB中心的掺杂的可能性。本研究利用可调谐激光研究了无机玻璃中聚集色心的形成及其光吸收带中相应空穴的形成，得到如下结果：（1）在强还原气氛中熔融的铝酸钙玻璃表现出光致变色性。光致EPR研究表明，光致变色中心是被Ca^2+离子俘获在氧空位上的电子，即光致变色中心是一个光致变色中心。例如，CaO中的F ^+中心。在4.2K下，当激光照射中心在560 nm附近的吸收带时，没有观察到光谱空穴的形成。(2)Si^+或P ^+离子注入SiO_2玻璃中产生了两种类型的氧缺陷：Si-Si键缺陷和中性氧空位缺陷。它们的浓度与注入离子的浓度是相容的，这表明注入离子与衬底结构中的氧发生化学反应，从而留下缺氧缺陷。没有观察到这些缺陷的任何一个的zoro-phonon线。

项目成果

H. Hosono, N. Asada, and Y. Abe: "Properties and Mechanism in Reduced Calcium Aluminate Glasses" J. Appl. Phys. 67. 2840-2847 (1991)

H. Hosono、N. Asada 和 Y. Abe：“还原铝酸钙玻璃的特性和机理”J. Appl。

H.Hosono: "Properties and Mechanism of Photochromism in Reduced Calcium Aluminate Glasses" Journal of Applied Physics. (1990)

H.Hosono：“还原铝酸钙玻璃中光致变色的特性和机制”应用物理学杂志。

H. Hosono, and R. A. Weeds: "Information about Interaction of Implanted Ions with Amorphous Silica obtained from Structural Defects" Transaction of Materials Society of Japan, submitted for publication.

H. Hosono 和 R. A. Weeds：“关于植入离子与从结构缺陷中获得的无定形二氧化硅相互作用的信息”，日本材料学会汇刊，提交出版。

H・HOSONO: "Information about Interaction of Implanted Ions with Amorphous Silica Obtained from Structural Defects" Transaction of Materials Research Society of Japan.

H. HOSONO：“从结构缺陷中获得的有关注入离子与无定形二氧化硅相互作用的信息”日本材料研究会会刊。

H.Hosono: "Information about interaction of implanted ions with amorphous Silica obtained from structural defects" Transaction of Materials Research Society of Japan. (1991)

H.Hosono：“关于注入离子与从结构缺陷获得的非晶二氧化硅相互作用的信息”日本材料研究学会汇刊。