Ge/Si Self-Assembled Quantum Dots and Their Optoelectronic Device Applications

2007 ◽  
Vol 95 (9) ◽  
pp. 1866-1883 ◽  
Author(s):  
Kang L. Wang ◽  
Dongho Cha ◽  
Jianlin Liu ◽  
Christopher Chen
2004 ◽  
Vol 829 ◽  
Author(s):  
K. Stewart ◽  
S. Barik ◽  
M. Buda ◽  
H. H. Tan ◽  
C. Jagadish

ABSTRACTIn this paper we discuss the growth of self-assembled InAs quantum dots (QDs) on both GaAs and InP substrates by low pressure Metal Organic Chemical Vapor Deposition. The influence of various growth parameters, such as the deposition time, the QD overlayer growth temperature, the V/III ratio and the group III and/or group V interdiffusion on QD formation are discussed and compared for the two systems. Stacking issues and preliminary results for an InAs/GaAs QD laser are also presented.


2003 ◽  
Vol 776 ◽  
Author(s):  
Peter Möck

AbstractAlthough the main international research thrust on self-assembled epitaxial semiconductor quantum dots is currently being directed towards random alloy quantum dots, the suggestion is made that atomically ordered quantum dots which are grown by either epitaxy or endotaxy may in addition to their larger quantum confinement potentials possess superior long term structural stability. Such atomically ordered quantum dots should, therefore, be superior to random alloy quantum dots as far as prospective device applications are concerned. The basis for this suggestion is simple thermodynamic considerations. These considerations seem to explain our transmission electron microscopical observations of epitaxially grown atomically ordered In(Sb,As), (In,Ga)Sb, (Cd,Zn)Se, (Cd,Mn,Zn)Se quantum dots and Pb(Se,Te) quantum dot predecessor islands. Atomic ordering in (In,Ga)P quantum dot structures, as recently observed by other authors, does not seem to contradict our thermodynamic considerations. Endotaxially grown atomically ordered (In,Si,As) and (Sn,Si) quantum dots in Si matrices are briefly discussed as an even more unconventional approach to nanostructures with applications in electronics, photonics, information storage, and sensing.


Nanoscale ◽  
2018 ◽  
Vol 10 (48) ◽  
pp. 22766-22774 ◽  
Author(s):  
Ruxue Li ◽  
Zhipeng Wei ◽  
Haixia Zhao ◽  
Hongrui Yu ◽  
Xuan Fang ◽  
...  

All-inorganic perovskite quantum dots (QDs) have been considered as outstanding candidates for high-performance optoelectronic device applications.


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