%0 Journal Article
%T 取向对铁酸铋薄膜漏电机制和光伏性能的影响<br> Effect of Orientation on Leakage Mechanism and Photovoltaic Properties in Bismuth Ferrite Thin Films
%A 于笑妍
%A 魏一
%A 李昊阳
%A 张萌
%A 李奕瑄
%A 高洁
%A 张宪贵
%A 宋建民
%A 曾浩宇
%J Hans Journal of Nanotechnology
%P 41-48
%@ 2161-0878
%D 2022
%I Hans Publishing
%R 10.12677/NAT.2022.122006
%X <div style=\"text-align:justify;\">
	<span style=\"font-size:14px;\">本文通过偏轴磁控溅射法，以不同取向钛酸锶SrTiO</span><sub><span style=\"font-size:14px;\">3</span></sub><span style=\"font-size:14px;\"> (STO)单晶基片为衬底，镧锶钴氧La</span><sub><span style=\"font-size:14px;\">0.5</span></sub><span style=\"font-size:14px;\">Sr</span><sub><span style=\"font-size:14px;\">0.5</span></sub><span style=\"font-size:14px;\">CoO</span><sub><span style=\"font-size:14px;\">3</span></sub><span style=\"font-size:14px;\"> (LSCO)为底电极，铁酸铋BiFeO</span><sub><span style=\"font-size:14px;\">3</span></sub><span style=\"font-size:14px;\"> (BFO)为铁电介质，构架了Pt/BFO/LSCO/STO异质结电容器。XRD结果显示不同取向的BFO薄膜均为外延结构。研究了不同取向Pt/BFO/LSCO异质结的漏电机制和光伏性能。J-V数据拟合表明，Pt/BFO/LSCO漏电流大小依赖于BFO薄膜取向，满足(001)J &gt; (110)J &gt; (111)J规律。不同取向Pt/BFO/LSCO异质结的导电机制均为：低电场欧姆导电和高电场肖特基导电。通过铁电光伏系统对Pt/BFO/LSCO异质结的光伏性能进行了测量，结果表明开路电压V</span><sub><span style=\"font-size:14px;\">OC</span></sub><span style=\"font-size:14px;\">和短路电流J</span><sub><span style=\"font-size:14px;\">SC</span></sub><span style=\"font-size:14px;\">强烈依赖于BFO薄膜取向，(111)取向最大、(110)取向次之、(001)取向最小。<br />
The Pt/BFO/LSCO/STO
heterojunction capacitor were fabricated on three oriented SrTiO</span><sub><span style=\"font-size:14px;\">3</span></sub><span style=\"font-size:14px;\"> (STO)
single crystal substrates by off-axis RF magnetron sputtering, La</span><sub><span style=\"font-size:14px;\">0.5</span></sub><span style=\"font-size:14px;\">Sr</span><sub><span style=\"font-size:14px;\">0.5</span></sub><span style=\"font-size:14px;\">CoO</span><sub><span style=\"font-size:14px;\">3</span></sub><span style=\"font-size:14px;\"> (LSCO) as bottle electrode and BiFeO</span><sub><span style=\"font-size:14px;\">3</span></sub><span style=\"font-size:14px;\"> (BFO) film as ferroelectric
medium. XRD results show that BFO films with different orientations are
epitaxial. The leakage mechanism and photovoltaic performance of Pt/BFO/LSCO
heterostructure are studied. The fitting of J-V data shows that the leakage
current of Pt/BFO/LSCO depends on the orientation of BFO films, which satisfies
the rule of (001)J &gt; (110)J &gt; (111)J. The conduction mechanisms of
Pt/BFO/LSCO heterostructure with different orientations are: low electric field
ohmic conduction and high electric field Schottky conduction. The photovoltaic
characteristics of Pt/BFO/LSCO heterostructureare characterized by
ferroelectric photovoltaic system. The results show that the V</span><sub><span style=\"font-size:14px;\">oc</span></sub><span style=\"font-size:14px;\"> and
J</span><sub><span style=\"font-size:14px;\">sc</span></sub><span
%K 铁酸铋，异质结，偏轴磁控溅射法，漏电流机制，铁电光伏效应<br> Bismuth Ferrite
%K Heterostructure
%K Off Axis Magnetron Sputtering
%K Leakage Current Mechanism
%K Ferroelectric Photovoltaic Effect
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=51208