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	Electronic structures of 1-ml c-84/ag(111): energy level alignment and work function variation
	Wang, Peng1,2; Zhao, Li-Li1; Zhang, Jin-Juan1; Li, Wen-Jie2; Liu, Wei-Hui1; Chen, Da1; Sheng, Chun-Qi2; Wang, Jia-Ou3; Qian, Hai-Jie3; Ibrahim, Kurash3
刊名	Surface science
	2017-12-01
卷号	666页码:23-27
关键词	Photoelectron spectroscopy Electronic structure Work function Fullerene c84
ISSN号	0039-6028
DOI	10.1016/j.susc.2017.08.015
通讯作者	Wang, peng(phywangp@sdust.edu.cn)
英文摘要	The electronic structures of fullerene/metal interface are critical to the performance of devices based on fullerene in molecular electronics and organic electronics. herein, we investigate the electronic structures at the interface between c-84 and ag(111) by photoelectron spectroscopy and soft x-ray absorption spectroscopy techniques. it is observed that c-84 monolayer on ag(111) surface (1-ml c-84/ag(111)) has metallic nature. a charge transfer from substrate to the unoccupied states of c-84 is determined to be 1.3 electrons per molecule. however, the work function of 1-ml c-84 (4.72 ev) is observed slightly larger than that of the clean ag(111) substrate (4.50 ev). a bidirectional charge transfer model is introduced to understand the work function variation of the fullerene/metal system. in addition to the charge transfer from substrate to the adsorbate's unoccupied states, there exists non-negligible back charge transfer from fullerene occupied molecular orbital to the metal substrate through interfacial hybridization. the fermi level will be pinned at similar to 4.72 ev for c-84 monolayer on coinage metal substrate. (c) 2017 elsevier b.v. all rights reserved.
WOS关键词	INTERFACE DIPOLE ; C-60 MONOLAYER ; C-84 ; PHOTOEMISSION ; SURFACES ; CU(111) ; AG(111) ; ORGANIC/METAL ; TRANSISTORS ; AU(111)
WOS研究方向	Chemistry ; Physics
WOS类目	Chemistry, Physical ; Physics, Condensed Matter
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000413877900004
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176913
专题	高能物理研究所
通讯作者	Wang, Peng
作者单位	1.Shandong Univ Sci & Technol, Coll Elect Commun & Phys, Qingdao 266590, Peoples R China 2.Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Lab Synchrotron Radiat, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Wang, Peng,Zhao, Li-Li,Zhang, Jin-Juan,et al. Electronic structures of 1-ml c-84/ag(111): energy level alignment and work function variation[J]. Surface science,2017,666:23-27.
APA	Wang, Peng.,Zhao, Li-Li.,Zhang, Jin-Juan.,Li, Wen-Jie.,Liu, Wei-Hui.,...&Li, Hong-Nian.(2017).Electronic structures of 1-ml c-84/ag(111): energy level alignment and work function variation.Surface science,666,23-27.
MLA	Wang, Peng,et al."Electronic structures of 1-ml c-84/ag(111): energy level alignment and work function variation".Surface science 666(2017):23-27.

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