Biexcitons in semiconductor quantum dots

Y. Z. Hu, S. W. Koch, M. Lindberg, N. Peyghambarian, E. L. Pollock, Farid F. Abraham

Research output: Contribution to journalArticlepeer-review

267 Scopus citations


Theoretical and experimental results are reported which provide the first evidence for biexciton states in semiconductor quantum dots. The theory predicts an increasing biexciton binding energy with decreasing dot size. Unlike bulk semiconductors, quantum dots have excited biexciton states which are stable. These biexciton states are observed as pronounced induced absorption features on the high-energy side of the bleached exciton resonances in femtosecond and nanosecond pump-probe experiments of quantum dots in glass matrices.

Original languageEnglish (US)
Pages (from-to)1805-1807
Number of pages3
JournalPhysical review letters
Issue number15
StatePublished - 1990

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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