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采用SOL-GEL方法分别在Si和含有SiO2的衬底上制备出PZT铁电薄膜,并获得了MFS和MFOS结构.利用MOS结构常用的C-V特性分析方法,对MFS和MFOS结构进行了高频C-V特性测试分析,研究了F/(O)S的界面特性,结果表明,金属/PZT/SiO2/Si的MFOS结构具有较低的界面态,可实现极化存储,并可望制成铁电场效应晶体管.
PZT ferroelectric thin films were prepared on Si substrate and SiO2 substrate respectively by SOL-GEL method, and the structures of MFS and MFOS were obtained. The C / V characteristics of MFS and MFOS structures were tested and analyzed by the common C-V analysis method of MOS structure. The interface characteristics of F / (O) S were studied. The results showed that the metal / PZT / SiO2 / Si The MFOS structure has a lower interface state, enabling polarization storage, and is expected to make ferroelectric field effect transistors.