@article{704aab8d7ca54340820f906d6a87d9a6,
title = "Optical properties of InAs quantum dots with InAlAsInGaAs composite matrix",
abstract = "InAs quantum dots (QDs) in various matrices, such as InAlAs, InGaAs, InAlAsInGaAs, and InGaAsInAlAs, are prepared to clarify how the overgrown layers affect their optical properties. It is shown that strain reduction mechanism dominates the emission wavelength extension when the thickness of the overgrown layer is thin. The relaxation of compressive strain at the QD bottom by InAlAs overgrown layer cannot only extend the QD emission wavelength but also narrow the spectral linewidth and increase the state separation between the ground state and the first excited state.",
author = "Liu, {Wei Sheng} and Chyi, {Jen Inn}",
note = "Funding Information: The authors would like to thank Dr. N.-T. Yeh for his assistance in and fruitful discussions on MBE growth and sample characterization. Support from the MBE laboratory of the Optical Sciences Center at National Central University is acknowledged. This work was supported by the National Science Council of the R.O.C. under Contract No. NSC 91-2120-E-008-001, the Ministry of Education of R.O.C. under the Program for Promoting Academic Excellence of Universities, and the Center for Nanoscience and Technology, University System of Taiwan.",
year = "2005",
month = jan,
day = "15",
doi = "10.1063/1.1829147",
language = "???core.languages.en_GB???",
volume = "97",
journal = "Journal of Applied Physics",
issn = "0021-8979",
number = "2",
}