王耀祖,王家邦,杨 辉,郭兴忠,杨锋.溶胶-凝胶法制备掺铁钛酸铋铁电薄膜光学性能的研究[J].稀有金属材料与工程,2020,49(4):1277~1281.[Yaozu Wang,Jiabang Wang,Hui Yang,Xingzhong Guo,Feng Yang.Optical Properties of Iron-doped Bismuth TitanateSynthesized by Sol-gol Process[J].Rare Metal Materials and Engineering,2020,49(4):1277~1281.]
溶胶-凝胶法制备掺铁钛酸铋铁电薄膜光学性能的研究
投稿时间:2019-04-30  修订日期:2019-10-10
中文关键词:  铁电薄膜  Fe-BTO  溶胶-凝胶法
基金项目:国家自然科学基金资助(21875217, 51372225)
中文摘要:
      铁电光伏效应的光生载流子分离方式不同于传统的光伏效应,使得铁电光伏效应能够得到远高于传统光伏效应的开路电压,这对提高光电转换效率具有重大意义,而克服铁电薄膜光学带隙过大的缺点一直是铁电光伏研究的重要课题。本文通过溶胶-凝胶法制备了不同掺加浓度的Fe-BTO铁电薄膜以减小其光学带隙,研究不同Fe掺杂浓度对 BTO 铁电薄膜铁电光伏效应的影响。研究结果表明,使用溶胶-凝胶法对BTO铁电薄膜掺加不同浓度的Fe,所制备的薄膜结晶度较好、网状结构明显、空间分布均匀,晶粒尺寸大小均一;通过溶胶-凝胶法制备Fe-BTO铁电薄膜在Fe掺杂浓度x=0.9附近可以明显减小其禁带宽度。
Optical Properties of Iron-doped Bismuth TitanateSynthesized by Sol-gol Process
英文关键词:ferroelectric film  Fe-BTO  sol-gel
英文摘要:
      Photon-generated carrier of ferroelectric photovoltaic effect is different from the carrier of traditional photovoltaic effect, which makes the ferroelectric photovoltaic effect much more excellent. It is of great significance to improve the photoelectric conversion efficiency, and overcome the shortcoming of large band gap of ferroelectric thin film, which has been an important subject of research in ferroelectric photovoltaic effect. In this work, BTO ferroelectric thin films with different doping concentration of Fe were prepared by sol-gel method to reduce the optical band gap. In order to study impact of different Fe doping concentration on photovoltaic effect of ferroelectric thin film, the film composition, microstructure, band gap and other factors were characterized. Research result shows that the doped Fe with concentration of (Bi4Ti3-xFexO12) changing from x = 0.8 to x = 1.2 does not transform the matrix structure of BTO; The doped film has good crystallinity, obvious reticular structure, well-proportioned spatial distribution and uniform grain size. The Fe-BTO ferroelectric thin films prepared by sol-gel method can significantly tune its band gap.
作者单位E-mail
王耀祖 浙江大学材料科学与工程学院 307673470@qq.com 
王家邦 浙江大学材料科学与工程学院  
杨 辉 浙江大学材料科学与工程学院  
郭兴忠 浙江大学材料科学与工程学院  
杨锋 济南大学材料科学与工程学院  
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