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

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

doi:10.1063/1.122098

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 journal › Article

118 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	1104-1106
Number of pages	3
Journal	Applied Physics Letters
Volume	73
Issue number	8
DOIs	https://doi.org/10.1063/1.122098
Publication status	Published - 1998
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.122098

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abstract = "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.",

author = "Peter Ramvall and Satoru Tanaka and Shintaro Nomura and Philippe Riblet and Yoshinobu Aoyagi",

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AU - Tanaka, Satoru

AU - Nomura, Shintaro

AU - Riblet, Philippe

AU - Aoyagi, Yoshinobu

PY - 1998

Y1 - 1998

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AB - 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.

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