Systematic study of beta-SiC surface structures by molecular-dynamics simulations

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	Systematic study of beta-SiC surface structures by molecular-dynamics simulations
	Luo, X ; Qian, GF ; Fei, WD ; Wang, EG ; Chen, CF
刊名	PHYSICAL REVIEW B
	1998
卷号	57 期号:15 页码:9234
关键词	AB-INITIO CALCULATIONS BETA-SIC(100) SURFACES INTERATOMIC POTENTIALS ATOMIC-STRUCTURE SILICON-CARBIDE III-V RECONSTRUCTION CARBON ENERGETICS DIAMOND
ISSN号	0163-1829
通讯作者	Luo, X (reprint author), Harbin Inst Technol, Sch Mat Sci & Technol, Harbin 150001, Peoples R China.
中文摘要	We have carried out steady-state photoinduced infrared-absorption measurements on the newly synthesized organic molecule 5,5'-bis-(2-phenylethylnyl)-2,2'-bithienyl (PhEtBT). We have found that the dominant elementary excitations in PhEtBT are Wannier-type neutral excitons formed between electrons and holes strongly localized in adjacent intramolecular or intermolecular C=C sites. We observed that charge carriers which do not undergo direct radiative recombination are self-localized by forming metastable charged polarons. We have observed two different charge distributions on the polaron site; one is polaronlike for T < 120 K, and the other is bipolaronlike at T> 120 K. We suggest that the charge trap centers are provided by the large polarizability of the localized pi' dimers in the C=C site. [S0163-1829(98)04203-9].
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/54503]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Luo, X,Qian, GF,Fei, WD,et al. Systematic study of beta-SiC surface structures by molecular-dynamics simulations[J]. PHYSICAL REVIEW B,1998,57(15):9234.
APA	Luo, X,Qian, GF,Fei, WD,Wang, EG,&Chen, CF.(1998).Systematic study of beta-SiC surface structures by molecular-dynamics simulations.PHYSICAL REVIEW B,57(15),9234.
MLA	Luo, X,et al."Systematic study of beta-SiC surface structures by molecular-dynamics simulations".PHYSICAL REVIEW B 57.15(1998):9234.