Physical and electrical properties of thermally oxidized dielectrics on Si-capped Ge-on-Si substrate

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	Physical and electrical properties of thermally oxidized dielectrics on Si-capped Ge-on-Si substrate
	Zheng, Yuanyu ; Liu, Guanzhou ; Li, Cheng ; Huang, Wei ; Chen, Songyan ; Lai, Hongkai ; Li C(李成)
刊名	http://dx.doi.org/10.1116/1.3668115
	2012-01
关键词	PASSIVATION INTERFACE OXIDATION GERMANIUM SURFACES
英文摘要	National Basic Research Program of China [2012CB933503]; National Natural Science Foundation of China [61036003, 61176092]; Fundamental Research Funds for the Central Universities [2010121056]; Thermal oxidation of silicon (Si)-capped germanium (Ge) epilayer on Si substrate is performed to study the effect of the physical interface on the electrical properties of Ge metaloxide-semiconductor capacitors. During the growth and oxidation of the Si cap layer, Ge atoms diffuse through the Si cap layer, and they are oxidized to GeO2. Once the Si cap layer is consumed, more Ge suboxides are generated, resulting in the serious degradation of the capacitance-voltage characteristics. Both the positive fixed charges generated by the evaporation of GeO and the negative fixed charges induced by the formation of Si-O-dangling bonds are proposed to affect the flat-band voltage shifts. These results suggest that the deposition of a thin Si cap layer on Ge is effective in suppressing the generation of Ge sub-oxides during thermal oxidation, thereby improving the performance of Ge capacitors. (C) 2012 American Vacuum Society. [DOI: 10.1116/1.3668115]
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/69541]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Zheng, Yuanyu,Liu, Guanzhou,Li, Cheng,et al. Physical and electrical properties of thermally oxidized dielectrics on Si-capped Ge-on-Si substrate[J]. http://dx.doi.org/10.1116/1.3668115,2012.
APA	Zheng, Yuanyu.,Liu, Guanzhou.,Li, Cheng.,Huang, Wei.,Chen, Songyan.,...&李成.(2012).Physical and electrical properties of thermally oxidized dielectrics on Si-capped Ge-on-Si substrate.http://dx.doi.org/10.1116/1.3668115.
MLA	Zheng, Yuanyu,et al."Physical and electrical properties of thermally oxidized dielectrics on Si-capped Ge-on-Si substrate".http://dx.doi.org/10.1116/1.3668115 (2012).