Energy Transfer in Multi-Stacked InAs Quantum Dots

• Kouichi Akahane

• Naokatsu Yamamoto

• Makoto Naruse

• Tadashi Kawazoe

• Takashi Yatsui

• Motoichi Ohtsu

抄録

We fabricated a modulated stacked quantum dot (QD) structure to investigate energy transfer among QDs using a strain compensation technique that allowed us to fabricate a vertically aligned, highly stacked structure without any degradation in crystal quality. Enhanced photoluminescence (PL) intensity for the ground state of large QDs was clearly observed in a sample where the ground state of small QDs was resonant to the first excited state of large QDs, indicating energy transfer from small QDs to large QDs. Long-range energy transfer reached approximately 200 nm and can be considered from the measurement of N dependence of PL intensity.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 50 (4S), 04DH05-, 2011-04-01

  IOP Publishing

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1360284921832866304
• NII論文ID: 210000070342
• DOI: 10.1143/jjap.50.04dh05
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.50.04DH05
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.50.04DH05/pdf
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