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注Si+热氧化SiO2薄膜的蓝光发射及其退火特性
Blue Luminescence and Annealing Characteristic of Si ̄+-Implanted SiO2 Films on Crystalline Silicon
【摘要】 对单晶硅片上热生长的SiO2薄膜注入Si+,注入能量为120keV,剂量为2×1016cm-2.在~5.0eV的光子激发下,注Si+氧化膜可生产~2.7eV的蓝光发射.在退火处理中,发光强度先随退火温度上升而增大,在500~600℃时达到最大值,此后逐渐减小.这种蓝光发射是由于注入的过剩Si引起氧空位缺陷而产生的.
【Abstract】 Abstract Thermally grown SiO2 films on crystalline silicon wafers were implanted with Si+ at an energy of 120 keV and with a dose of 2×1016cm-2, Under excitation of 5. 0 eV photons, the St+-implanted SiO2 films exhibit blue luminescence peaked at about 2. 7eV.The peak intensity increases as annealing temperature and reaches its maximum at 500~600℃, and then decreases when the annealing temperature is higher than 600C. The blueemission is caused by oxygen vacancies in the films.
【基金】 国家自然科学基金
- 【文献出处】 半导体学报 ,CHINESE JOURNAL OF SEMICONDUCTORS , 编辑部邮箱 ,1996年10期
- 【分类号】O649.4
- 【被引频次】8
- 【下载频次】71