Title
Correlation between size distribution and luminescence properties of spool-shaped InAs quantum dots
Date Issued
12 April 2017
Access level
metadata only access
Resource Type
journal article
Author(s)
Xie H.
Prioli R.
Torelly G.
Liu H.
Fischer A.
Jakomin R.
Mourão R.
Kawabata R.
Pires M.
Souza P.
Publisher(s)
Institute of Physics Publishing
Abstract
InAs QDs embedded in an AlGaAs matrix have been produced by MOVPE with a partial capping and annealing technique to achieve controllable QD energy levels that could be useful for solar cell applications. The resulted spool-shaped QDs are around 5 nm in height and have a log-normal diameter distribution, which is observed by TEM to range from 5 to 15 nm. Two photoluminescence peaks associated with QD emission are attributed to the ground and the first excited states transitions. The luminescence peak width is correlated with the distribution of QD diameters through the diameter dependent QD energy levels.
Volume
32
Issue
5
Language
English
OCDE Knowledge area
Óptica
Subjects
Scopus EID
2-s2.0-85018979675
Source
Semiconductor Science and Technology
ISSN of the container
02681242
Sponsor(s)
The research at ASU was supported in part by the National Science Foundation (NSF) and the Department of Energy (DOE) under NSF CA No. EEC-1041895. The material design, growth, and theoretical calculations were partially supported by the Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ) Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), and by the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq).
Sources of information:
Directorio de Producción Científica
Scopus