Molecular interface effect of heterogeneous molecular junctions consisting of nonfluorinated and fluorinated phthalocyanines

doi:10.1021/jp0605799

CORC > 化学研究所 > 中国科学院化学研究所

	Molecular interface effect of heterogeneous molecular junctions consisting of nonfluorinated and fluorinated phthalocyanines
	Liu, Yuhong ; Yang, Deliang ; Wang, Chen
刊名	JOURNAL OF PHYSICAL CHEMISTRY B
	2006-10-26
卷号	110 期号:42 页码:20789-20793
ISSN号	1520-6106
DOI	10.1021/jp0605799
英文摘要	We report the tunneling behavior of homogeneous and heterogeneous molecular junctions using p-type molecules of iron phthalocyanine (FePc), phthalocyanine (H2Pc), and copper(II) octaalkoxyl substituted phthalocyanine (CuPcOC8) and n-type molecule of copper hexadecafluorophthalocyanine (F16CuPc). The molecular films formed on the electrode surfaces were inspected by X-ray photoelectron spectroscopy (XPS). The measured characteristic tunneling curves of single-component phthalocyanines revealed comparable energy gaps for homogeneous tunneling junctions using the photoemission method. In contrast, for the heterogeneous tunnel junctions of mixed phthalocyanines including fluorinated phthalocyanine a distinctive offset of the energy gaps to the positive bias voltage direction can be clearly identified. It is suggested that the substitution of phthalocyanines and surface affinity of phthalocyanines could contribute to the controlled phase separation within the heterogeneous tunneling junctions. The apparent shift of the tunneling spectra is attributed to the existence of an internal electric field originated with the phase separation of the binary mixture of p-type and n-type phthalocyanines within the tunneling junction.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000241381600015
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/59111]
专题	中国科学院化学研究所
通讯作者	Wang, Chen
作者单位	1.Natl Ctr NanoSci & Technol, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 3.Tsing Hua Univ, Dept Precis Instruments & Mechanol, State Key Lab Tribol, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yuhong,Yang, Deliang,Wang, Chen. Molecular interface effect of heterogeneous molecular junctions consisting of nonfluorinated and fluorinated phthalocyanines[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2006,110(42):20789-20793.
APA	Liu, Yuhong,Yang, Deliang,&Wang, Chen.(2006).Molecular interface effect of heterogeneous molecular junctions consisting of nonfluorinated and fluorinated phthalocyanines.JOURNAL OF PHYSICAL CHEMISTRY B,110(42),20789-20793.
MLA	Liu, Yuhong,et al."Molecular interface effect of heterogeneous molecular junctions consisting of nonfluorinated and fluorinated phthalocyanines".JOURNAL OF PHYSICAL CHEMISTRY B 110.42(2006):20789-20793.