Tuning and monitoring of quantum dot growth by an in situ cantilever

doi:10.1103/PhysRevB.79.045401

CORC > 北京大学 > 工学院

	Tuning and monitoring of quantum dot growth by an in situ cantilever
	Wang, Yan ; Weissmueller, Joerg ; Duan, Huiling
刊名	physical review b
	2009
关键词	crystal growth free energy island structure nanostructured materials self-assembly semiconductor quantum dots surface energy surface morphology STRAINED ISLANDS STRESS EQUILIBRIUM
DOI	10.1103/PhysRevB.79.045401
英文摘要	Self-organization of quantum dots (QDs) on an in situ cantilever setup is investigated using a continuum approach. In this QD growth system, the cantilever has two functions. The first function is as a substrate of QD growth and the second is to tune and detect the morphologies of QDs. We calculate the free energy, consisting of elastic energy, surface energy, island-substrate interaction energy, wetting-layer-substrate interaction energy, and island-island interaction energy, and we analyze their contributions to the total free energy in the QD growth system. Then, we calculate the critical quantity of the deposited material, above which the QD growth system will transfer from the planar film state to the island array state, and the curvature of the cantilever during QD growth. The curvatures of the cantilever are functions of island coverage, island size, facet orientation of island, thickness of the wetting layer, and thickness of the cantilever. It is shown that the in situ cantilever setup can not only tune the morphologies of QDs by properly choosing the thickness of the cantilever but can also monitor the QD growth state with a high sensitivity.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000262978400082&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Physics, Condensed Matter; SCI(E); 1; ARTICLE; 4; 79
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/316120]
专题	工学院
推荐引用方式 GB/T 7714	Wang, Yan,Weissmueller, Joerg,Duan, Huiling. Tuning and monitoring of quantum dot growth by an in situ cantilever[J]. physical review b,2009.
APA	Wang, Yan,Weissmueller, Joerg,&Duan, Huiling.(2009).Tuning and monitoring of quantum dot growth by an in situ cantilever.physical review b.
MLA	Wang, Yan,et al."Tuning and monitoring of quantum dot growth by an in situ cantilever".physical review b (2009).