Abstract
In this letter, the optical properties of InAs (QDs)/GaInAsP on InP substrate grown by gas source molecular beam epitaxy are investigated. By measuring and analyzing the photoluminescence spectra of InAs (QDs)/GaInAsP/InP at different temperatures and excitation powers, the origin of each emission is verified. And it is found that, with the temperature increasing, the emission intensity of GaInAsP wetting layers decreases firstly (T < 150 K) and then increases from 160 K to room temperature. By analyzing the experimental results of three samples with different QDs’ sizes, a competitive emission between InAs QDs and GaInAsP wetting layers is confirmed.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant No.11274330, Grant No.61474067, Grant No.11104302, Grant No.11474297), the Shanghai Committee of Science and Technology of China (Grant No. 11ZR1442300), and the China Postdoctoral Science Foundation (Grant No. 20110490075).
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Yuan, X., Wang, Q., Sun, L. et al. Competitive emissions of InAs (QDs)/GaInAsP/InP grown by GSMBE. Appl. Phys. A 119, 193–199 (2015). https://doi.org/10.1007/s00339-014-8947-5
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DOI: https://doi.org/10.1007/s00339-014-8947-5