Controllable dissociations of PH3 molecules on Si(001)

Liu, Qin1,2; Lei, Yanhua3; Shao, Xiji3; Ming, Fangfei1; Xu, Hu3; Wang, Kedong3; Xiao, Xudong1

2016-04

10.1088/0957-4484/27/13/135704

NANOTECHNOLOGY   影响因子和分区

0957-4484

1361-6528

We demonstrate for the first time to our knowledge that controllable dissociation of PH3 adsorption products PHx (x = 2, 1) can be realized by STM (scanning tunneling microscope) manipulation techniques at room temperature. Five dissociative products and their geometric structures are identified via combining STM experiments and first-principle calculations and simulations. In total we realize nine kinds of controllable dissociations by applying a voltage pulse among the PH3-related structures on Si(001). The dissociation rates of the five most common reactions are measured by the I-t spectrum method as a function of voltage. The suddenly increased dissociation rate at 3.3 V indicates a transition from multivibrational excitation to single-step excitation induced by inelastic tunneling electrons. Our studies prove that selectively breaking the chemical bonds of a single molecule on semiconductor surface by STM manipulation technique is feasible.

atom/molecule manipulation scanning tunneling microscopy phosphine Si(001) single molecule reaction

SCI ; EI

英语

通讯

Institute of Materials[SJZ201507]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000370735100021

IOP PUBLISHING LTD

20160902039967

Bond strength (chemical) ; Molecules ; Phosphorus compounds ; Photodissociation ; Scanning tunneling microscopy

Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3

MATERIALS SCIENCE

Web of Science

1.Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
2.Sci & Technol Surface Phys & Chem Lab, Mianyang 621908, Peoples R China
3.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China

Liu, Qin,Lei, Yanhua,Shao, Xiji,et al. Controllable dissociations of PH3 molecules on Si(001)[J]. NANOTECHNOLOGY,2016,27(13).

Liu, Qin.,Lei, Yanhua.,Shao, Xiji.,Ming, Fangfei.,Xu, Hu.,...&Xiao, Xudong.(2016).Controllable dissociations of PH3 molecules on Si(001).NANOTECHNOLOGY,27(13).

Liu, Qin,et al."Controllable dissociations of PH3 molecules on Si(001)".NANOTECHNOLOGY 27.13(2016).