当前位置：
X-MOL 学术
›
Adv. Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Large Switchable Photoconduction within 2D Potential Well of a Layered Ferroelectric Heterostructure.
Advanced Materials ( IF 27.4 ) Pub Date : 2020-07-29 , DOI: 10.1002/adma.202003033 Yuben Yang 1 , Huican Mao 1 , Jing Wang 2, 3 , Qinghua Zhang 4 , Lei Jin 5 , Chuanshou Wang 1 , Yuelin Zhang 1 , Nan Su 1 , Fanqi Meng 4 , Ying Yang 1 , Ruqiao Xia 1, 6 , Rongyan Chen 1 , Hui Zhu 5 , Lin Gu 4 , Zhiping Yin 1 , Ce-Wen Nan 2 , Jinxing Zhang 1
Advanced Materials ( IF 27.4 ) Pub Date : 2020-07-29 , DOI: 10.1002/adma.202003033 Yuben Yang 1 , Huican Mao 1 , Jing Wang 2, 3 , Qinghua Zhang 4 , Lei Jin 5 , Chuanshou Wang 1 , Yuelin Zhang 1 , Nan Su 1 , Fanqi Meng 4 , Ying Yang 1 , Ruqiao Xia 1, 6 , Rongyan Chen 1 , Hui Zhu 5 , Lin Gu 4 , Zhiping Yin 1 , Ce-Wen Nan 2 , Jinxing Zhang 1
Affiliation
|
The coexistence of large conductivity and robust ferroelectricity is promising for high‐performance ferroelectric devices based on polarization‐controllable highly efficient carrier transport. Distinct from traditional perovskite ferroelectrics, Bi2WO6 with a layered structure shows a great potential to preserve its ferroelectricity under substantial electron doping. Herein, by artificial design of photosensitive heterostructures with desired band alignment, three orders of magnitude enhancement of the short‐circuit photocurrent is achieved in Bi2WO6/SrTiO3 at room temperature. The microscopic mechanism of this large photocurrent originates from separated transport of electrons and holes in [WO4]−2 and [Bi2O2]+2 layers respectively with a large in‐plane conductivity, which is understood by a combination of ab initio calculations and spectroscopic measurements. The layered electronic structure and appropriately designed band alignment in this layered ferroelectric heterostructure provide an opportunity to achieve high‐performance and nonvolatile switchable electronic devices.
中文翻译：
分层铁电异质结构二维势阱中的大型可切换光电导。
大电导率和强大的铁电性的共存对于基于极化可控的高效载流子传输的高性能铁电器件是有希望的。与传统的钙钛矿铁电材料不同，具有分层结构的Bi 2 WO 6在很大的电子掺杂下显示出很大的潜力来保持其铁电性。在此，通过人工设计具有所需能带排列的光敏异质结构，在室温下Bi 2 WO 6 / SrTiO 3中实现了短路光电流的三个数量级的增强。这种大光电流的微观机理源自[WO 4] -2和[Bi 2 O 2 ] +2层分别具有大的面内电导率，这是从头算和光谱测量相结合的结果。分层的电子结构和在该分层铁电异质结构中适当设计的能带排列为实现高性能和非易失性可开关电子设备提供了机会。
更新日期：2020-09-15
中文翻译：
分层铁电异质结构二维势阱中的大型可切换光电导。
大电导率和强大的铁电性的共存对于基于极化可控的高效载流子传输的高性能铁电器件是有希望的。与传统的钙钛矿铁电材料不同，具有分层结构的Bi 2 WO 6在很大的电子掺杂下显示出很大的潜力来保持其铁电性。在此，通过人工设计具有所需能带排列的光敏异质结构，在室温下Bi 2 WO 6 / SrTiO 3中实现了短路光电流的三个数量级的增强。这种大光电流的微观机理源自[WO 4] -2和[Bi 2 O 2 ] +2层分别具有大的面内电导率，这是从头算和光谱测量相结合的结果。分层的电子结构和在该分层铁电异质结构中适当设计的能带排列为实现高性能和非易失性可开关电子设备提供了机会。
京公网安备 11010802027423号