Fast recovery of excitonic absorption peaks in tunneling bi-quantum-well structures

Atsushi Tackeuchi, Shunichi Muto, Tsuguo Inata, Toshio Fujii

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Fast recovery of the excitonic absorption peak in “tunneling bi-quantum-well structures” is proposed and demonstrated for the first time. A tunneling bi-quantum-well consists of the repeated structure of narrow and wide wells coupled quantum-mechanically, enabling photo-excited carriers in the narrow well to tunnel toward the wide well with a relaxation time much faster than the radiative recombination time of carriers. The recovery time was reduced to 18 ps using the 4.0 nm-thick tunneling barrier and strongly depends on the barrier thickness as would be expected from electron tunneling.

Original languageEnglish
Pages (from-to)L1098-L1100
JournalJapanese journal of applied physics
Issue number7 A
Publication statusPublished - 1989 Jul
Externally publishedYes


  • Absorption
  • Exciton
  • Peak
  • Quantum well
  • Recovery
  • Tunne

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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