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高反射率周期性铁电多层膜形成机理研究

Keywords: 铁电多层膜,周期性,相分离,热解,高反射率,周期性结构,膜形成,机理研究,REFLECTIVITY,OPTICAL,HIGH,MULTILAYERS,FERROELECTRIC,PERIODICAL,MECHANISM,过程,聚合物热解,高分子,相分离,形成机理,分析表,重点,一维,多孔层

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Abstract:

利用含聚合物添加剂的前驱体溶液,通过重复甩胶镀膜-热处理工艺制备了PbZrB0.4BTiB0.6B0.6OB3(PZT)和BaTi0.9Sr0.1BO3(BST)铁电多层膜.在特定的波长范围,每个多层膜具有高达90%的光学反射率,且峰值反射率随生长次数的增加而增大.显微技术分析表明每个多层膜是由一系列厚度几乎相等的致密层和厚度也近乎相同的多孔层交替排列形成的一维周期性结构.重点分析了这种周期性结构的可能形成机理,它涉及相分离和高分子聚合物热解两个过程.

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