论文标题
在（111）面向bifeo3/lafeo3超级晶格中定制光伏效应
Tailoring the photovoltaic effect in (111) oriented BiFeO3/LaFeO3 superlattices
论文作者
论文摘要
脉冲激光沉积生长的BifeO3/LaFeo3超晶格的铁电和光伏性能已被研究为双层厚度）。对于高浓度的BifeO3，同时观察到铁电状态，并具有可切换的光伏反应。相反，与某些浓度的LaFeo3相反，可以证明了不可切换的光伏效应。超晶格中的PV响应的这种调节归因于铁电的降压相变为X的增加。值得注意的是，随着PV机制的这种变化，随着X的增加，传导机制的变化似乎也从块状限制到界面受限运输。
Ferroelectric and photovoltaic properties of BiFeO3/LaFeO3 superlattices grown by pulsed laser deposition have been investigated being the bilayer thickness). For a high concentration of BiFeO3 a ferroelectric state is observed simultaneously with a switchable photovoltaic response. In contrast for certain concentration of LaFeO3 a non-switchable photovoltaic effect is evidenced. Such modulation of the PV response in the superlattices is attributed to the ferroelectric to paraelectric phase transition which is controlled with the increase of x. Remarkably, concomitant to this change of PV mechanism, a change of the conduction mechanism also seems to take place from a bulk-limited to an interface-limited transport as x increases.
