典型文献
Selective formation of ultrathin PbSe on Ag(111)
文献摘要：
Two-dimensional(2D)semiconductors,such as lead selenide(PbSe),locate at the key position of next-generation devices.However,the ultrathin PbSe is still rarely reported experimentally,particularly on metal substrates.Here,we report the ultrathin PbSe synthesized via sequential molecular beam epitaxy on Ag(111).The scanning tunneling microscopy is used to resolve the atomic structure and confirms the selective formation of ultrathin PbSe through the reaction between Ag5Se2 and Pb,as further evidenced by the theoretical calculation.It is also found that the increased accumulation of Pb leads to the improved quality of PbSe with larger and more uniform films.The detailed analysis demonstrates the bilayer structure of synthesized PbSe,which could be deemed to achieve the 2D limit.The differential conductance spectrum reveals a metallic feature of the PbSe film,indicating a certain interaction between PbSe and Ag(111).Moreover,the moiré pattern originated from the lattice mismatch between PbSe and Ag(111)is observed,and this moiré system provides the opportunity for studying physics under periodical modulation and for device applications.Our work illustrates a pathway to selectively synthesize ultrathin PbSe on metal surfaces and suggests a 2D experimental platform to explore PbSe-based opto-electronic and thermoelectric phenomena.
文献关键词：
中图分类号：
作者姓名：
Jing Wang;Meysam Bagheri Tagani;Li Zhang;Yu Xia;Qilong Wu;Bo Li;Qiwei Tian;Yuan Tian;Long-Jing Yin;Lijie Zhang;Zhihui Qin
作者机构：
Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices,School of Physics and Electronics,Hunan University,Changsha 410082,China;Department of Physics,University of Guilan,P.O.Box 41335-1914,Rasht,Iran
文献出处：
引用格式：
[1]Jing Wang;Meysam Bagheri Tagani;Li Zhang;Yu Xia;Qilong Wu;Bo Li;Qiwei Tian;Yuan Tian;Long-Jing Yin;Lijie Zhang;Zhihui Qin-.Selective formation of ultrathin PbSe on Ag(111))[J].中国物理B（英文版）,2022(09):127-131
A类：
Ag5Se2
B类：
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AB值：
0.591336
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
