采用阳极氧化法在纯Ta表面制备绝缘性优良的Ta2O5介质膜,分析阳极氧化制备Ta2O5膜的基本机理,讨论不同电解液、阳极氧化电压及热处理等工艺参数对Ta2O5膜性能的影响.利用XRD、EDS和AFM分析薄膜的组织结构和表面形貌,超高阻微电流测试仪测试Ta2O5绝缘膜漏电流特性和耐击穿电压,结果表明,磷酸电解液中添加适当乙二醇溶液能有效地防止"晶化",阳极氧化电压在125～150V范围内制备Ta2O5绝缘膜耐击穿电压能力强,经350℃/60min大气气氛下热处理Ta2O5薄膜,内部结构致密,能有效提高Ta2O5绝缘膜耐击穿电压.
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