Observation of confinement-dependent exciton binding energy of GaN quantum dots

Peter Ramvall, Satoru Tanaka, Shintaro Nomura, Philippe Riblet, Yoshinobu Aoyagi

Research output: Contribution to journalArticlepeer-review

130 Citations (Scopus)


The photoluminescence emission peak energy of GaN quantum dots was observed to shift to higher energy with decreasing quantum dot size. This effect was found to be a combination of a blueshift from the confinement-induced shift of the electronic levels and a redshift from the increased Coulomb energy induced by a compression of the exciton Bohr radius. From this observation, absolute values of the exciton binding energy as a function of quantum dot size are determined.

Original languageEnglish
Pages (from-to)1104-1106
Number of pages3
JournalApplied Physics Letters
Issue number8
Publication statusPublished - 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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