| 1 | Improving the band alignment at PtSe_(2)grain boundaries with selective adsorption of TCNQ显示文摘Grain boundaries in two-dimensional(2D)semiconductors generally induce distorted band alignment and interfacial charge,which impair their electronic properties for device applications.Here,we report the improvement of band alignment at the grain boundaries of PtSe_(2),a 2D semiconductor,with selective adsorption of a presentative organic acceptor,tetracyanoquinodimethane(TCNQ).TCNQ molecules show selective adsorption at the PtSe_(2)grain boundary with strong interfacial charge.The adsorption of TCNQ distinctly improves the band alignment at the PtSe_(2)grain boundaries.With the charge transfer between the grain boundary and TCNQ,the local charge is inhibited,and the band bending at the grain boundary is suppressed,as revealed by the scanning tunneling microscopy and spectroscopy(STM/S)results.Our finding provides an effective method for the advancement of the band alignment at the grain boundary by functional molecules,improving the electronic properties of 2D semiconductors for their future applications. | Yanhui Hou Ziqiang Xu Yan Shao Linlu Wu Zhongliu Liu Genyu Hu Wei Ji Jingsi Qiao Xu Wu Hong-Jun Gao Yeliang Wang | 2023 | Nano Research2023，16，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员