标题:Effective bandgap engineering in wrinkled germanane Wa tiny electric field
作者:Yandong Ma;Ying Dai;Ying-Bo Lu
作者机构:[Ma, Yandong; Dai, Ying; Lu, Ying-Bo; Huang, Baibiao] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
通讯作者:Dai, Y
通讯作者地址:[Dai, Y]Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
来源:Journal of Materials Chemistry, C. materials for optical and electronic devices
出版年:2014
卷:2
期:6
页码:1125-1130
DOI:10.1039/c3tc32084g
摘要:Effective modulation of physical properties via external control is a tantalizing possibility that would bring two-dimensional material-based electronics a step closer. Following the recent experiments, we report a systematic investigation of the effect of external electric field (E-field) on electronic properties of wrinkled germanane based on first-principles calculations. Our results demonstrate that a rninuscule E-field can largely and continuously reduce the energy gap of wrinkled germanane. This goes beyond all existing two-dimensional materials, since the required E-field in wrinkled germanane is only a fraction of that for most existing two-dimensional materials. More interestingly, our data show that the promising band inversion can be obtained by modulation of strength of the tiny E-field due to the modification of electron distribution. Furthermore, the possible underlying physical mechanisms are discussed in detail. These results provide a new perspective on the formation of germanane-based electronic devices.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:21
Scopus被引频次:21
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892761366&doi=10.1039%2fc3tc32084g&partnerID=40&md5=5d50c2b4c06608fb5e580c8ab4b48249
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