文章基本信息

标题：Manipulated Optical Absorption and Accompanied Photocurrent Using Magnetic Field in Charger Transfer Engineered C/ZnO Nanowires
本地全文：下载
作者：Jun‐Xiao Lin ; Guan‐Xun Chen ; Yen‐Fa Liao 等
期刊名称：Global Challenges
印刷版ISSN：2056-6646
电子版ISSN：2056-6646
出版年度：2020
卷号：4
期号：10
页码：1-6
DOI：10.1002/gch2.202000025
语种：English
出版社：John Wiley & Sons, Ltd
摘要：AbstractThe rarely explored, spin‐polarized band engineering, enables direct dynamic control of the magneto‐optical absorption (MOA) and associated magneto‐photocurrent (MPC) by a magnetic field, greatly enhancing the range of applicability of photosensitive semiconductor materials. It is demonstrated that large negative and positive MOA and MPC effects can be tuned alternately in amorphous carbon (a‐C)/ZnO nanowires by controlling the sp2/sp3ratio ofa‐C. A sizeable enhancement of the MPC ratio (≈15%) appears at a relatively low magnetic field (≈0.2 T). Simulated two peaks spin‐polarized density of states is applied to explain that the alternate sign switching of the MOA is mainly related to the charge transfer between ZnO and C. The results indicate that the enhanced magnetic field performance of (a‐C)/ZnO nanowires may have applications in renewable energy‐related fields and tunable magneto‐photonics.The alternate magnetic‐field‐manipulated optical absorption (MOA) and associated photocurrent can be engineered by spin‐polarized band at room temperature. Simulated two peaks spin‐polarized density of states is applied to explain that the alternate sign switching of the MOA is mainly related to the charge transfer between ZnO and C.
关键词：charge transfermagneto‐optical absorptionmagneto‐photocurrentspin‐polarized band engineering