High magnetic field influence on the molecular orientation and the morphology of iron phthalocyanine thin films

doi:10.7498/aps.65.156101

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院强磁场科学中心

	High magnetic field influence on the molecular orientation and the morphology of iron phthalocyanine thin films
	Huang Chao 1; Liu Ling-Yun 1; Fang Jun 2; Zhang Wen-Hua 1; Wang Kai 1; Gao Pin 1; Xu Fa-Qiang 1
刊名	ACTA PHYSICA SINICA
	2016-08-05
卷号	65 期号:15 页码:1-8
关键词	Organic Semiconductor Molecular Orientation Organic Molecular Beam Deposition Near-edge X-ray Absorption Fine Structure
DOI	10.7498/aps.65.156101
文献子类	Article
英文摘要	Molecular orientation and stacking mode are commonly considered to have vital influence on the optoelectronic performances of organic semiconductor devices via changing the dynamics of charge carriers transferring among the molecules. Highly ordered and homogeneous stacking would allow a fast band transfer mechanism in the phase domain. Therefore the controls of the molecular orientation and the stacking behavior are of great significance for optimizing the device natures. In this work, the modification and control of iron phthalocyanine (FePc) molecular orientation on Si(111) are accomplished with the aid of high steady magnetic field at room temperature. The FePc films are grown in situ by organic molecular beam deposition on the Si(111) substrates under a high magnetic field strength of 8.5 T. The Si(111) substrates are preserved at room temperature and are kept perpendicular to the magnetic field. The influences of magnetic field on the molecular orientations and the morphologies of FePc thin films are investigated by X-ray diffraction, angle dependent near edge X-ray absorption fine structure (NEXAFS), Raman spectroscopy and atomic force microscopy (AFM). In the presence of the external magnetic field, the deposited FePc films each show a higher crystallinity and slightly closer packing in (002) plane than those without magnetic field. The AFM images verifies more ordered and uniform morphologies of the FePc films grown in the magnetic field. NEXAFS and Raman results both reveale a standing-up configuration of FePc molecules on the Si(111) substrate surface. The average tilting angle of the molecules changes from 63.6 degrees to 67.1 degrees when 8.5 T magnetic field is employed. The results demonstrate that the external high magnetic field distinctly enhances the orientation order of FePc molecules on Si(111) surface due to the magnetic-magnetic interactions between the magnetic field and the molecular magnetic moment. This work also demonstrates that external magnetic field is an efficient means to regulate the orientation and stacking behavior of magnetic molecules, which may open a new way to optimize the performances of the organic semiconductor devices.
WOS关键词	HETEROJUNCTION INTERFACES ; ELECTRONIC-STRUCTURE ; CHARGE-TRANSFER ; TEMPERATURE ; SPECTRA ; SPECTROSCOPY ; ALIGNMENT ; STATES ; FEPC
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000384762400020
资助机构	National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; National Natural Science Foundation of China(U1232137 ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; Scientific Research Program of the Hefei Science Center, Chinese Academy of Sciences, China(2015SRG-HSC032) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; 11575187) ; 11575187)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/30170]
专题	合肥物质科学研究院_中科院强磁场科学中心
作者单位	1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China 2.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Huang Chao,Liu Ling-Yun,Fang Jun,et al. High magnetic field influence on the molecular orientation and the morphology of iron phthalocyanine thin films[J]. ACTA PHYSICA SINICA,2016,65(15):1-8.
APA	Huang Chao.,Liu Ling-Yun.,Fang Jun.,Zhang Wen-Hua.,Wang Kai.,...&Xu Fa-Qiang.(2016).High magnetic field influence on the molecular orientation and the morphology of iron phthalocyanine thin films.ACTA PHYSICA SINICA,65(15),1-8.
MLA	Huang Chao,et al."High magnetic field influence on the molecular orientation and the morphology of iron phthalocyanine thin films".ACTA PHYSICA SINICA 65.15(2016):1-8.