东南大学学报（自然科学版）2024，Vol.54Issue(4)：1037-1045,9.DOI:10.3969/j.issn.1001-0505.2024.04.029
二维金属与CrCl3接触的界面性质
Interface properties of two-dimensional metal in contact with CrCl3
摘要
Abstract
To modulate the potential barrier at the interface between metal and CrCl3,a method for forming van der Waals contact with CrCl3 using two-dimensional metal MX2(M=V,Nb;X=S,Se,Te)as elec-trode was proposed.The electrical properties of CrCl3/MX2 contact interface were studied using density func-tional theory.The results show that CrCl3/VS2,CrCl3/VSe2 and CrCl3/NbTe2 form n-type Schottky con-tacts,the n-type Schottky barrier values are 0.49,0.15 and 0.14 eV,respectively.CrCl3/NbS2 and CrCl3/NbSe2 form p-type Schottky contacts,the p-type Schottky barrier values are 0.49 and 0.65 eV,re-spectively.CrCl3/VTe2 forms ohmic contacts.The negligible metal induced gap states and small interface dipoles at CrCl3/MX2 interface indicate a weak Fermi level pinning effect in CrCl3/MX2,which makes the Schottky barrier height adjustable in a large range.Therefore,by selecting two-dimensional metal electrodes with different work functions,the control of contact type and Schottky barrier height can be achieved in CrCl3/MX2 contacts.The results is helpful to understand the barrier regulation of CrC13/MX2 contact by dif-ferent two-dimensional metal electrodes.关键词
二维材料/界面/肖特基势垒/电学性质Key words
two-dimensional materials/interface/Schottky barrier/electrical properties分类
数理科学引用本文复制引用
施永飞,胡艳梅,胡小会..二维金属与CrCl3接触的界面性质[J].东南大学学报（自然科学版）,2024,54(4):1037-1045,9.基金项目
国家自然科学基金资助项目(11604047). （11604047）
