Polarity-Driven Directional [0001] Electron Transfer on Nonpolar ZnO (101̅0) Crystal Plane
Polarity-Driven Directional [0001] Electron Transfer on Nonpolar ZnO (101̅0) Crystal Plane
复制标题
非极性 ZnO (101Ì0) 晶面上极性驱动的定向 [0001] 电子转移
DOI：
10.1021/acs.jpcc.2c06740
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发表时间：
2022-12
期刊：
影响因子：
--
通讯作者：
Shengzhong Liu
中科院分区：
文献类型：
--
作者：
Xiaobo Li;Bin Liu;Heqing Yang;Shengzhong Liu
控制电子流动的新方法的发现为开发新型电子和光电器件奠定了基础。本文以非极性ZnO（1010）晶面为例，首次给出了材料中自发极化控制电子迁移的实验观测结果。发现当在（1010）晶面上的非极性[1210]方向上施加偏压时，在垂直于[1210]的[0001]极性方向上检测到的电流总是显著大于当在[0001]方向上施加相同电压时在非极性[1210]方向上检测到的电流。这种定向电子转移现象被称为极性取向效应，其起源于在[0001]极性方向上由自发极化产生的自发电场（Es）。ES驱动电子沿着[0001]极向定向迁移。极性取向效应为极性结构统一理论的建立提供了实验依据。极性结构理论将有助于理解晶体平面和取向依赖的物理和化学性质，并指导新型高性能电子材料和器件的开发。
Discovery of a novel way to control the flow of electrons forms the basis for developing novel types of electronic and optoelectronic devices. Here, taking nonpolar ZnO (1010) crystal plane for example, we demonstrate for the first time the experimental observations of the spontaneous polarization-controlled electron migration in materials. It is found that when a bias is applied in the nonpolar [1210] direction on the (1010) crystal plane, the current detected in the [0001] polar direction perpendicular to the [1210] is always significantly greater than the current detected in the nonpolar [1210] direction when the same voltage is applied in the [0001] direction. This directional electron transfer phenomenon is termed as the polar orientation effect, which originates from the spontaneous electric field (Es) generated by spontaneous polarization in the [0001] polar direction. The Esdrives the directional electron migration along the [0001] polar direction. The polar orientation effect provides experimental evidence for the establishment of the unified polar structure theory. The polar structure theory will contribute to the understanding of the crystal plane- and orientation- dependent physical and chemical properties and guide the development of novel types of high performance electronic materials and devices.
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影响因子：
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作者：
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DOI：
10.1002/advs.201600216
发表时间：
2017-01
期刊：
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子：
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通讯作者：
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