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VO2/FTO复合热致变色薄膜的制备及其光学特性

Keywords: VO2,FTO,复合薄膜,热致变色,光学特性

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Abstract:

在掺氟的SnO2(FTO)导电玻璃衬底上采用直流磁控溅射的方法室温沉积纯钒金属薄膜,再在退火炉中经后退火工艺制备VO2/FTO复合热致变色薄膜,并对复合薄膜的结构及其光学特性进行研究.结果表明,导电玻璃上的FTO并没有改变VO2择优取向生长,但明显改变了VO2薄膜的表面形貌特征.与相同工艺条件下在玻璃衬底上制备的VO2薄膜相比,VO2/FTO复合薄膜的相变温度降低约18℃,热滞回线温宽收窄约4℃,相变前后的红外透过率分别约为42%和21%.说明复合薄膜既可明显降低相变温度和热滞宽度,又可增强VO2薄膜的红外调控能力.

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