Time-resolved study of carrier transfer among InAs/GaAs multi-coupled quantum dots

Atsushi Tackeuchi, Yoshiaki Nakata, Shunichi Muto, Yoshihiro Sugiyama, Tatsuya Usuki, Yuji Nishikawa, Naoki Yokoyama, Osamu Wada

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Carrier transfer among InAs/GaAs self-organized multi-coupled quantum dots was studied using time-resolved photoluminescence. In the multi-coupled quantum dots, since quantum dots couple with the other dots laterally, the photoexcited carriers tunnel into the relatively larger quantum dots which have lower energy levels. The photoluminescence decay time of multi-coupled quantum dots strongly depends on the energy in contrast with conventional quantum dots. The energy dependence can be explained with a cascade-like tunneling model assuming a tunneling time between quantum dots of 1300 ps.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume34
Issue number11 A
Publication statusPublished - 1995 Nov 1
Externally publishedYes

Fingerprint

Time and motion study
Semiconductor quantum dots
quantum dots
Photoluminescence
photoluminescence
Electron energy levels
tunnels
Tunnels
cascades
energy levels
energy
decay

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Tackeuchi, A., Nakata, Y., Muto, S., Sugiyama, Y., Usuki, T., Nishikawa, Y., ... Wada, O. (1995). Time-resolved study of carrier transfer among InAs/GaAs multi-coupled quantum dots. Japanese Journal of Applied Physics, Part 2: Letters, 34(11 A).

Time-resolved study of carrier transfer among InAs/GaAs multi-coupled quantum dots. / Tackeuchi, Atsushi; Nakata, Yoshiaki; Muto, Shunichi; Sugiyama, Yoshihiro; Usuki, Tatsuya; Nishikawa, Yuji; Yokoyama, Naoki; Wada, Osamu.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 34, No. 11 A, 01.11.1995.

Research output: Contribution to journalArticle

Tackeuchi, A, Nakata, Y, Muto, S, Sugiyama, Y, Usuki, T, Nishikawa, Y, Yokoyama, N & Wada, O 1995, 'Time-resolved study of carrier transfer among InAs/GaAs multi-coupled quantum dots', Japanese Journal of Applied Physics, Part 2: Letters, vol. 34, no. 11 A.
Tackeuchi, Atsushi ; Nakata, Yoshiaki ; Muto, Shunichi ; Sugiyama, Yoshihiro ; Usuki, Tatsuya ; Nishikawa, Yuji ; Yokoyama, Naoki ; Wada, Osamu. / Time-resolved study of carrier transfer among InAs/GaAs multi-coupled quantum dots. In: Japanese Journal of Applied Physics, Part 2: Letters. 1995 ; Vol. 34, No. 11 A.
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